ImpactMC - the CT dose reference

Overview

The ImpactMC software package is unique in its functionality on the market today, delivering fast 3D dose distribution calculations using Monte Carlo simulations for radiography and computed tomography (CT). We have had excellent feedback also in the field of science and research, where it has already been successfully employed for dose distribution calculations in nearly 40 international publications.

The generated 3D dose distributions are indispensable when it comes to organ dose estimations and the calculation of effective dose levels of individual exposures. Based on each acquisition's parameters (spectrum and geometry) and the reconstructed volumetric data, a Monte Carlo simulation is conducted in order to calculate the dose deposited in every voxel with regard to the photon interactions. The software can be applied in a wide variety of tasks, including radiography, clinical CT, C-arm-based flat-detector CT or micro-CT, since it can simulate all parameters of a modern CT system like shaped filters (bow-tie filters), tube current modulation, shifted-detector setups, dual-source setups and dynamic collimation in z- and fan-direction. The optional use of one or multiple modern NVIDIA GPUs through CUDA allows simulation times below one minute at a sufficiently high accuracy. Thus ImpactMC is one of the fastest Monte Carlo simulation packages available. In contrast to other Monte Carlo packages you will reach reliable results much faster. All important CT features are already implemented and validated and no costly expansions and tests are necessary. To ensure best results, ImpactMC has been validated on three different CT-systems.

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Return to: CT-Software

Features

Systems

• Clinical CT
Flat-detector CT (C-arm, Micro-CT)
• CBCT (Dental CT)

Trajectories

Radiography
Circular scan
• Sequentiel scan

Spiral scan
• Topogram/Localizer

Phantoms

User-defined mathematical (XML files, optional)
Voxel-based (DICOM)

Validation (also see: References)

Clinical CT (Siemens Somatom Flash*)
C-arm flat-panel CT (Siemens Artis Zeego*)
• Micro-CT (CT Imaging TomoScope® 30s Duo)

 

*registered trademarks of Siemens AG

Special Features

• Short simulation times using GPUs (optional)
• CTDI calculation wizard
• MPR view
• User defined spectra
• Multiple user defined flat and shaped filters
• Tube current modulation
Shifted detectors
• Dual tube-detector systems
• Dynamic collimation
• Spectrum generator

Software

• Graphical user interface in English language
Flexible und scriptable command line
• Sheet for computing organ- and effective dose values
• License via USB-dongle
• 6 example data sets included
• Available for Windows XP SP2, Vista, 7, 8, 8.1 and 10
• Native 32 bit and 64 bit versions
• Supports datasets up to 2 GB (64 Bit only)
• Not a medical product

Screenshots

Abdomen-CT
Abdomen-CTDICOM image of an abdomen scan blended with the computed dose distribution.
Abdomen-CT
CTDI Evaluation
CT-Head
CT-Head
Micro-CT Mouse
Micro-CT Mouse

ImpactMC allows retrospective simulation of dose distributions of CT-examinations. The simulated data can subsequently be evaluated.

Evaluation

By evaluating the ROIs it is possible to determine the mean dose in any specific organ. By weighting these organ doses according to their hazard potential, the effective dose can be calculated. The CTDI-values can be similarly determined in a simulation using special CTDI-phantoms.

Speed

The GPU accelerated version of ImpactMC allows to significantly shorten computing times. Dose distributions can be provided with high accuracy within just a few minutes.

References

ImpactMC is the reference when it comes to dose distribution calculation for computed tomography. In more than 40 international publications, ImpactMC has been employed to determine dose values; and the trend is going up. In order to ensure the quality of the results, they have been validated on various CT-systems and published in scientific journals. At the renowned Institute of Medical Physics in Erlangen, Germany (under the leadership of Prof. Willi A. Kalender), several dissertations on the development and validation of ImpactMC have already been written.

Last revised: 2017-01-12

References regarding the development and validation of ImpactMC

  1. N. Saltybaeva. Radiation dose calculation and optimization in computed tomography. PhD. Thesis, Institute of Medical Physics, University of Erlangen-Nürnberg (2015)
  2. B. Schmidt, N. Saltybaeva, D. Kolditz, W. A. Kalender. Assessment of patient dose from CT localizer radiographs. Med. Phys., 40, 084301, (2013)
    http://dx.doi.org/10.1118/1.4813296
  3. M. Hupfer. Dosisreduktion in der Mikro-Computertomographie. PhD. Thesis, Institute of Medical Physics, University of Erlangen-Nürnberg (2012)
  4. M. Hupfer, D. Kolditz, T. Nowak, F. Eisa, R. Brauweiler, W. A. Kalender. Dosimetric concepts for scanner quality assurance and tissue dose assessment in micro-CT. Med. Phys., 39, 658-670 (2012)
    http://dx.doi.org/10.1118/1.3675400
  5. W. Chen, D. Kolditz, M. Beister, R. Bohle, W. A. Kalender. Fast on-site Monte Carlo tool for dose calculations in CT applications. Med. Phys., 39, 2985-2996 (2012)
    http://dx.doi.org/10.1118/1.4711748
  6. W. Chen. Anwendungen von Grafikkarten in der Computertomographie: Monte Carlo Simulationen und Korrekturverfahren. PhD. Thesis, Institute of Medical Physics, University of Erlangen-Nürnberg (2011)
  7. Y. Kyriakou, P. Deak, O. Langner, and W. A. Kalender. Concepts for dose determination in flat-detector CT. Phys. Med. Biol., 53, 3551-3566 (2008)
    http://dx.doi.org/10.1088/0031-9155/53/13/011
  8. P. Deak, M. van Straten, P. C. Shrimpton, M. Zankl, W. A. Kalender. Validation of a Monte Carlo tool for patient-specific dose simulations in multi-slice computed tomography. Euro. Radiol., 18, 759-772 (2008)
  9. P. Deak. Patient-Specific Dose Calculations in X-ray Computed Tomography using Monte Carlo Methods. PhD. Thesis, Institute of Medical Physics, University of Erlangen-Nürnberg (2006)
  10. B. Schmidt, W. A. Kalender. A fast voxel-based Monte Carlo method for scanner- and patient-specific dose calculations in computed tomography. Physica Medica. 18(2), 43-53 (2002)
  11. B. Schmidt. Dosisberechnungnen für die Computertomographie. In Willi A. Kalender (ed), Berichte aus dem Institut für Medizinische Physik. 7, Aachen Shaker Verlag (2001)

References that use ImpactMC for dose evaluation

  1. A. Kelaranta, P. Toroi, P. Vock. Incident air kerma to absorbed organ dose conversion factors for breast and lung in PA thorax radiography: The effect of patient thickness and radiation quality. Physica Medica (2016, in press)
    http://dx.doi.org/10.1016/j.ejmp.2016.11.113
  2. K. Fujii, K. Nomura, Y. Muramatsu, S. Obara, K. Akahane, and M. Kusumoto. Organ Dose Evaluations Based on Monte Carlo Simulation for CT Examinations Using Tube Current Modulation. Radiat. Prot. Dosimetry (2016, in press)
    http://dx.doi.org/10.1093/rpd/ncw144
  3. Bernhard Schmidt, Martin Hupfer, Natalia Saltybaeva, Daniel Kolditz, and Willi A. Kalender. Dose Optimization for CT Localizer Radiographs for Low Dose Lung CT Examinations. Investigative Radiology (2016, in press)
    http://dx.doi.org/10.1097/RLI.0000000000000311
  4. W. A. Kalender, D. Kolditz, C. Steiding, V. Ruth, F. Lück, and A.-C. Rößler and E. Wenkel. Technical feasibility proof for high-resolution low-dose photon-counting CT of the breast. Eur. Radiol. (2016, in press)
    http://dx.doi.org/10.1007/s00330-016-4459-3
  5. N. Saltybaeva, K. Martini, T. Frauenfelder, H. Alkadhi. Organ Dose and Attributable Can-cer Risk in Lung Cancer Screening with Low-Dose Computed Tomography. PLoS ONE, 11(5), e0155722 (2016)
    http://dx.doi.org/10.1371/journal.pone.0155722
  6. A. C. Rössler, M. Hupfer, D. Kolditz, G. Jost, H. Pietsch, W. A. Kalender. High Atomic Number Contrast Media Offer Potential for Radiation Dose Reduction in Contrast-Enhanced Computed Tomography Investigative Radiology, 51.4, 249-254 (2016)
    http://dx.doi.org/10.1097/RLI.0000000000000232
  7. C. Franck, C. Vandevoorde, I. Goethals, P. Smeets, E. Achten, K. Verstraete, H. Thierens, K. Bacher. The role of Size-Specific Dose Estimate (SSDE) in patient-specific organ dose and cancer risk estimation in paediatric chest and abdominopelvic CT examinations. Eur. Radiol., in press (2015)
    http://dx.doi.org/10.1007/s00330-015-4091-7
  8. C. Vandevoorde. Biomarker investigation of the health effects of CT x-ray exposure in children: A PLEA TO “IMAGE GENTLY”. PhD. Thesis, Department of Basic Medical Sciences, Faculty of Medicine and Health Sciences, Gent University (2015)
  9. K. Fujii, K. Nomura, Y. Muramatsu, K. Takahashi, S. Obara, K. Akahane, and M. Satake. Evaluation of Organ Doses in Adult and Paediatric CT Examinations based on Monte Carlo Simulations and In-Phantom Dosimetry. Radiat. Prot. Dosimetry 165, 166-171 (2015)
    http://dx.doi.org/10.1093/rpd/ncv074
  10. W. A. Kalender, N. Saltybaeva, D. Kolditz, M. Hupfer, M. Beister, and B. Schmidt. Generating and using patient-specific whole-body models for organ dose estimates in CT with increased accuracy: Feasibility and validation. Physica Medica, 30, 925-933 (2014)
    http://dx.doi.org/10.1016/j.ejmp.2014.09.005
  11. C. Vandevoorde, C. Franck, K. Bacher, L. Breysem, M. H. Smet, C. Ernst, A. De Backer, K. Van De Moortele, P. Smeets, H. Thierens. γ-H2AX foci as in vivo effect biomarker in children emphasize the importance to minimize x-ray doses in paediatric CT imaging. Eur. Radiol., 25, 800-811 (2014)
    http://dx.doi.org/10.1007/s00330-014-3463-8
  12. F. Lück, D. Kolditz, M. Hupfer, C. Steiding, W. A. Kalender. Experimental validation of a single shaped filter approach for CT using variable source-to-filter distance for examination of arbitrary object diameters. Phys. Med. Biol., 59, 5691 (2014)
    http://dx.doi.org/10.1088/0031-9155/59/19/5691
  13. K. Perisinakis, I. Seimenis, A. Tzedakis, K. Pagonidis, A. E. Papadakis, J. Damilakis. Personalized assessment of radiation risks from the one-stop-shop myocardial 256-slice CT examination. International Journal of Cardiology, 168, 5267-5272 (2013)
    http://dx.doi.org/10.1016/j.ijcard.2013.08.018
  14. F. Lück, D. Kolditz, M. Hupfer, W. A. Kalender. Effect of shaped filter design on dose and image quality in breast CT. Phys. Med. Biol., 58, 4205-4223 (2013)
    http://dx.doi.org/10.1088/0031-9155/58/12/4205
  15. T. Kuroda. CT dose calculation software using Monte Carlo calculations - ImpactMC. JIRA Tsukan Technical Report No. 44, Japan Medical Imaging and Radiological Systems Industries Association (2013)
    http://www.jira-net.or.jp/publishing/files/51/jira_technical_report_44.pdf#page=26
  16. K. Perisinakis, I. Seimenis, A. Tzedakis, A. Papadakis, J. Damilakis. Triple-Rule-Out Computed Tomography Angiography With 256-Slice Computed Tomography Scanners: Patient-Specific Assessment of Radiation Burden and Associated Cancer Risk. Investigative Radiology, 47, 109-115 (2012)
    http://dx.doi.org/10.1097/RLI.0b013e31822d0cf3
  17. G. Stamm. Software for Calculating Dose and Risk. In D. Tack, M. K. Kalra and P. A. Gevenois (ed.) Radiation Dose from Multidetector CT, Springer Berlin Heidelberg, 563-568 (2012)
    http://dx.doi.org/10.1007/174_2011_434
  18. M. Hupfer, T. Nowak, R. Brauweiler, F. Eisa, W. A. Kalender. Spectral optimization for micro-CT. Med. Phys., 39, 3229-3239 (2012)
    http://dx.doi.org/10.1118/1.4718575
  19. R. A. J. Nievelstein, H. M. E. Quarles van Ufford, T. C. Kwee, M. B. Bierings, I. Ludwig, F. J. A. Beek, J. M. H. de Klerk, W. P. Th. M. Mali, P. W. de Bruin, J. Geleijns. Radiation exposure and mortality risk from CT and PET imaging of patients with malignant lymphoma. Eur. Radiol., 22, 1946-1954 (2012)
    http://dx.doi.org/10.1007/s00330-012-2447-9
  20. F. Eisa, R. Brauweiler, M. Hupfer, T. Nowak, L. Lotz, I. Hoffmann, D. Wachter,  R. Dittrich, M. W. Beckmann G. Jost, H. Pietsch, W. A. Kalender. Dynamic contrast-enhanced micro-CT on mice with mammary carcinoma for the assessment of antiangiogenic therapy response. Eur. Radiol., 22, 900-907 (2012)
    http://dx.doi.org/10.1007/s00330-011-2318-9
  21. T. Nowak, M. Hupfer, R. Brauweiler, F. Eisa, W. A. Kalender. Potential of high-Z contrast agents in clinical contrast-enhanced computed tomography. Med. Phys., 38, 6469-6482 (2012)
    http://dx.doi.org/10.1118/1.3658738
  22. M. S. May, P. Deak, A. Kuettner, M. M. Lell, W. Wuest, M. Scharf, A. K. Keller, L. Häberle, S. Achenbach, M. Seltmann, M. Uder, W. A. Kalender. Radiation dose considerations by intra-individual Monte Carlo simulations in dual source spiral coronary computed tomography angiography with electrocardiogram-triggered tube current modulation and adaptive pitch. Eur. Radiol., 22, 569-578 (2012)
    http://dx.doi.org/10.1007/s00330-011-2300-6
  23. D. Kolditz, T. Struffert, Y. Kyriakou, A. Bozzato, A. Dörfler, W. A. Kalender. Volume-of-Interest Imaging of the Inner Ear in a Human Temporal Bone Specimen Using a Robot-Driven C-Arm Flat Panel Detector CT System. AJNR Am. J. Neuroradiol., 33, E124 - E128 (2012)
    http://dx.doi.org/10.3174/ajnr.A2577
  24. W. A. Kalender, M. Beister, J. M. Boone, D. Kolditz, S. V. Vollmar, M. Weigel. High-resolution spiral CT of the breast at very low dose: Concept and feasibility considerations. Eur. Radiol., 22, 1-8 (2012)
    http://dx.doi.org/10.1007/s00330-011-2169-4
  25. W. A. Kalender. Computed Tomography. Fundamentals, System Technology, Image Quality, Applications. 3rd revised edition, Publicis, Erlangen, Germany (2011)
  26. W. A. Kalender, P. Deak, K. Engelke, M. Karolczak. X-Ray and X-Ray-CT. In F. Kiessling, B. J. Pichler (ed.) Small Animal Imaging, Springer Berlin Heidelberg, 125-139 (2011)
    http://dx.doi.org/10.1007/978-3-642-12945-2_10
  27. B.-J. Schultz, P. Wust, L. Lüdemann, G. Jost, H. Pietsch. Monte Carlo simulation of contrast-enhanced whole brain radiotherapy on a CT scanner. Med. Phys., 38 4672-4680 (2011)
    http://dx.doi.org/10.1118/1.3609099
  28. Y. Jin. Implementation and Optimization of Dual-Energy Computed Tomography. PhD. Thesis, Institute of Medical Physics, University of Erlangen-Nürnberg (2011)
    http://www.opus.ub.uni-erlangen.de/opus/volltexte/2011/2479
  29. M. M. Lell, M. May, P. Deak, S. Alibek, M. Kuefner, A. Kuettner, H. Köhler, S. Achenbach, M. Uder, T. Radkow. High-Pitch Spiral Computed Tomography: Effect on Image Quality and Radiation Dose in Pediatric Chest Computed Tomography. Investigative Radiology, 46, 116-123 (2011)
    http://dx.doi.org/10.1097/RLI.0b013e3181f33b1d
  30. M. Weigel, S. V. Vollmar, W. A. Kalender. Spectral optimization for dedicated breast CT. Med. Phys., 38, 114-124 (2011)
    http://dx.doi.org/10.1118/1.3523599
  31. P. Deak, Y. Smal, W. A. Kalender. Multisection CT Protocols: Sex- and Age-specific Conversion Factors Used to Determine Effective Dose from Dose-Length Product. Radiology, 257, 158-166 (2010)
    http://dx.doi.org/10.1148/radiol.10100047
  32. D. Kolditz, Y. Kyriakou, W. A. Kalender. Volume-of-interest (VOI) imaging in C-arm flat-detector CT for high image quality at reduced dose. Med. Phys., 37, 2719-2730 (2010)
    http://dx.doi.org/10.1118/1.3427641
  33. J. Damilakis, K. Perisinakis, A. Tzedakis, A. E. Papadakis, A. Karantanas. Radiation Dose to the Conceptus from Multidetector CT during Early Gestation: A Method That Allows for Variations in Maternal Body Size and Conceptus Position. Radiology 257(2), 483-489 (2010)
    http://dx.doi.org/10.1148/radiol.10092397
  34. K. Perisinakis, I. Seimenis, A. Tzedakis, A. E. Papadakis, J. Damilakis. Individualized Assessment of Radiation Dose in Patients Undergoing Coronary Computed Tomographic Angiography With 256-Slice Scanning. Circulation, 122, 2394-2402 (2010)
    http://dx.doi.org/10.1161/CIRCULATIONAHA.109.935346
  35. D. Kolditz, Y. Kyriakou, W. A. Kalender. Low Dose, Low Noise and High Resolution Volume of Interest (VOI) Imaging in C-Arm Flat-Detector CT. Proc. SPIE 7622, 762226 (2010)
    http://dx.doi.org/10.1117/12.844129
  36. C. Buschmann, J. Ohnsorge, K. Radermacher, and F. Niethard. Das Projekt orthoMIT: Schonendes Operieren mit innovativer Technik, The orthoMIT project: Gentle sugery using innovative technology. Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz 52, 287-296 (2009)
    http://dx.doi.org/10.1007/s00103-009-0790-z
  37. P. Deak, W. A. Kalender. A Monte Carlo Tool for Micro-CT Dose Assessment. IFMBE Proceedings - World Congress on Medical Physics and Biomedical Engineering, September 7 - 12, 2009, Munich, Germany, Springer Berlin Heidelberg, 25/2, 338-341 (2009)
    http://dx.doi.org/10.1007/978-3-642-03879-2_96
  38. S. Golfier, G. Jost, H. Pietsch, P. Lengsfeld, F. Eckardt-Schupp, E. Schmid, M. Voth. Dicentric chromosomes and γ-H2AX foci formation in lymphocytes of human blood samples exposed to a CT scanner: a direct comparison of dose response relationships. Radiation Protection Dosimetry, 134, 55-61 (2009)
    http://dx.doi.org/10.1093/rpd/ncp061
  39. Y. Kyriakou, T. Struffert, A. Dörfler, W. A. Kalender, Grundlagen der Flachdetektor-CT (FD-CT), Basics principles of flat detector computed tomography (FD-CT). Der Radiologe, 49, 811-819 (2009)
    http://dx.doi.org/10.1007/s00117-009-1860-9
  40. M. Myronakis, K. Perisinakis, A. Tzedakis, S. Gourtsoyianni and J. Damilakis. Evaluation of a Patient-Specific Monte Carlo Software for CT Dosimetry. Radiation Protection Dosimetry, 133(4), 248–255 (2009)
    http://dx.doi.org/10.1093/rpd/ncp051
  41. P. Deak, O. Langner, M. Lell, W. A. Kalender. Effects of Adaptive Section Collimation on Patient Radiation Dose in Multisection Spiral CT. Radiology 252(1), 140-147 (2009)
    http://dx.doi.org/10.1148/radiol.2522081845
  42. J. Geleijns, M. Salvadó Artells, P. W. de Bruin, R. Mather, Y. Muramatsu and M. F. McNitt-Gray. Computed tomography dose assessment for a 160 mm wide, 320 detector row, cone beam CT scanner. Phys. Med. Biol., 54, 3141-3159 (2009)
    http://dx.doi.org/10.1088/0031-9155/54/10/012
  43. G. Jost, S. Golfier, H. Pietsch, P. Lengsfeld, M. Voth, T. E. Schmid, F. Eckardt-Schupp and E. Schmid. The influence of x-ray contrast agents in computed tomography on the induction of dicentrics and γ-H2AX foci in lymphocytes of human blood samples. Phys. Med. Biol., 54, 6029-6039 (2009)
    http://dx.doi.org/10.1088/0031-9155/54/20/001
  44. S. V. Vollmar, W. A. Kalender. Reduction of dose to the female breast as a result of spectral optimisation for high-contrast thoracic CT imaging: a phantom study. The British Journal of Radiology, 82, 920-929 (2009)
    http://dx.doi.org/10.1259/bjr/28017710
  45. W. A. Kalender, P. Deak, M. Kellermeier, M. van Straten, S. V. Vollmar. Application- and patient size-dependent optimization of x-ray spectra for CT. Med. Phys., 36, 393-1007 (2009)
    http://dx.doi.org/10.1118/1.3075901
  46. M. van Straten, P. Deak, P. C. Shrimpton, W. A. Kalender. The effect of angular and longitudinal tube current modulations on the estimation of organ and effective doses in x-ray computed tomography. Med. Phys., 36, 4881-4889 (2009)
    http://dx.doi.org/10.1118/1.3231948
  47. Y. Kyriakou, G. Richter, A. Dörfler, W. A. Kalender. Neuroradiologic Applications with Routine C-arm Flat Panel Detector CT: Evaluation of Patient Dose Measurements. AJNR Am. J. Neuroradiol., 29, 1930-1936 (2008)
    http://dx.doi.org/10.3174/ajnr.A1237
  48. S. V. Vollmar, W. A. Kalender. Reduction of dose to the female breast in thoracic CT: a comparison of standard-protocol, bismuth-shielded, partial and tube-current-modulated CT examinations. Eur. Radiol., 18, 1674-1682 (2008)
    http://dx.doi.org/10.1007/s00330-008-0934-9
  49. S. Achenbach, K. Anders, W. A. Kalender. Dual-source cardiac computed tomography: image quality and dose considerations. Eur. Radiol., 18, 1188-1198 (2008)
    http://dx.doi.org/10.1007/s00330-008-0883-3
  50. I. Mastora, M. Remy-Jardin, V. Delannoy, A. Duhamel, C. Scherf, C. Suess, J. Remy. Multi–Detector Row Spiral CT Angiography of the Thoracic Outlet: Dose Reduction with Anatomically Adapted Online Tube Current Modulation and Preset Dose Savings. Radiology, 230, 116-124 (2004)
    http://dx.doi.org/10.1148/radiol.2301021408

References that cite ImpactMC

  1. C. M. Thompson. The Utility of Patient-Specific CT Dose Estimation Maps. PhD. Thesis, Department Chemical and Biomedical Engineering, Cleveland State University (2015)
    https://etd.ohiolink.edu/!etd.send_file?accession=csu1440534502&disposition=attachment
  2. S. D. Kordolaimi, E. P. Efstathopoulos. Computed Tomography Radiation Dosimetry: From the Indicators to the Indications. J. Comput. Assist. Tomogr., 38(6), 807-814 (2014)
    http://dx.doi.org/10.1097/RCT.0000000000000134
  3. W. A. Kalender. Dose in x-ray computed tomography. Phys. Med. Biol., 59, R129 (2014)
    http://dx.doi.org/10.1088/0031-9155/59/3/R129

Scientific presentations that use ImpactMC

  1. D. Kolditz, C. Steiding, F. Lück, V. Ruth, and W. A. Kalender. Dosimetry Approaches and Results for Photon-Counting Spiral Breast CT. Annual Meeting of Radiological Society of North America (RSNA) 2016, 27 November - 2 December 2016, Chicago, USA (2016).
    http://archive.rsna.org/2016/16010617.html
  2. K. Fujii, K. Nomura, Y. Muramatsu, M. Yoshimura, N. Sato, M. Kusumoto. Organ Dose Evaluations Based on Monte Carlo Simulation and In-phantom Dosimetry for Interven-tional Radiology. Annual Meeting of Radiological Society of North America (RSNA) 2016, 27 November - 2 December 2016, Chicago, USA (2016)
    http://archive.rsna.org/2016/16010233.html
  3. Y. Muramatsu, K. Nomura, K. Fujii, M. F. McNitt-Gray, M. Kusumoto. Can Size-Specific Dose Estimates (SSDE) be Regarded as the Preferred Dose Index for the Detectability in Lung Cancer CT Screening? Annual Meeting of Radiological Society of North America (RSNA) 2016, 27 November - 2 December 2016, Chicago, USA (2016).
    http://archive.rsna.org/2016/16006097.html
  4. K. Nomura, K. Fujii, Y. Muramatsu, H. Nagasawa, S. Tsukagoshi, R. Kakinuma, N. Moriyama. Evaluation of Simulated Radiation Dose in Chest Examinations Performed Using Super-HighResolution CT with 0.25-mm Slice Thickness x 128 Detector Rows. Annual Meeting of Radiological Society of North America (RSNA) 2015, 29 November – 4 December 2015, Chicago, USA (2015)
    http://archive.rsna.org/2015/15047263.pdf
  5. M. Hupfer, N. Saltybaeva, D. Kolditz, B. Schmidt, W. A. Kalender. Fast and Easy Estimates of Dose from Localizer Radiographs in Clinical CT Based on Pre-Calculated Monte Carlo Tables. Annual Meeting of Radiological Society of North America (RSNA) 2014, 30 November – 5 December 2014, Chicago, USA (2014)
    http://rsna2014.rsna.org/program/details/?emID=14017329
  6. S. V. Vollmar, D. Kolditz, M. Hupfer, W. A. Kalender. Dose to Organs and Tissues from Scattered Radiation in Breast CT: Impact on Effective Dose. Annual Meeting of Radiological Society of North America (RSNA) 2014, 30 November – 05 December 2014, Chicago, USA (2014)
    http://rsna2014.rsna.org/program/details/?emID=14003964
  7. N. Saltybaeva, M. E. Jafari, M. Hupfer, W. A. Kalender. Estimates of Effective Dose for CT Scans of the Lower Extremities. Annual Meeting of Radiological Society of North America (RSNA) 2014, 30 November – 05 December 2014, Chicago, USA (2014)
  8. K. Nomura. Basics and the latest technologies of dose assessment of CT. 70th Annual Scientific Symposium of the Japanese Society of Radiological Technology (JSRT) 2014, 12 April 2014, Yokohama, Japan (2014)
    http://www.jsrt.or.jp/data/wp-content/uploads/2013/01/70soukai-1.pdf
  9. N. Saltybaeva, M. Hupfer, D. Kolditz, B. Schmidt, W. A. Kalender. Fast and easy dose estimates including tube current modulation and automatic exposure control. Annual Meeting of Radiological Society of North America (RSNA) 2013, 01 - 06 December 2013, Chicago, USA (2013)
    http://rsna2013.rsna.org/pdf/index.cfm?em_id=13044458
  10. N. Saltybaeva, D. Kolditz, W. A. Kalender. Patient-specific whole-body voxel models for accurate organ and effective dose estimation. Annual Meeting of Radiological Society of North America (RSNA) 2013, 01 - 06 December 2013, Chicago, USA (2013)
    http://rsna2013.rsna.org/pdf/index.cfm?em_id=13022834
  11. N. Saltybaeve, B. Schmidt, D. Kolditz, W. A. Kalender. Assessment of patient dose from CT localizer radiographs. Annual Meeting of Radiological Society of North America (RSNA) 2013, 01 - 06 December 2013, Chicago, USA (2013)
    http://rsna2013.rsna.org/pdf/index.cfm?em_id=13019509
  12. F. Lück, D. Kolditz, M. Hupfer, W. A. Kalender. Experimental validation of shaped filter design with variable source-to-filter distance for breast CT with respect to image quality and dose. Annual Meeting of Radiological Society of North America (RSNA) 2013, 01 - 06 December 2013, Chicago, USA (2013)
    http://rsna2013.rsna.org/pdf/index.cfm?em_id=13019559
  13. N. Saltybaeva, D. Kolditz, B. Schmidt, W. A. Kalender. Monte Carlo tool for 3D-dose simulation in computed tomography taking into account tube current modulation. European Congress of Radiology (ECR) 2013, 7 - 11 March 2013, Vienna, Austria (2013)
    http://link.springer.com/content/pdf/10.1007%2Fs13244-013-0228-x.pdf#page=230
  14. N. Saltybaeva, Y. Smal, D. Kolditz, W. A. Kalender. Patient-specific whole-body voxel model for accurate Monte Carlo CT dose estimation. European Congress of Radiology (ECR) 2013, 7 - 11 March 2013, Vienna, Austria (2013)
    http://link.springer.com/content/pdf/10.1007%2Fs13244-013-0228-x.pdf#page=230
  15. R. Bohle, D. Kolditz, N. Saltybaeva, F. Lück, B. Schmidt, W. A. Kalender. Comparison of CT Dose Calculations Using Either Exact Shaped Filter Information or the Intensity Function which Results from Ionization Chamber Measurements. Annual Meeting of Radiological Society of North America (RSNA) 2012, 25 - 30 November 2012, Chicago, USA (2012)
    http://rsna2012.rsna.org/search/event_display.cfm?em_id=12022890
  16. D. Kolditz, N. Saltybaeva, R. Bohle, W. A. Kalender. Evaluation of Non-Cylindrical Quality Phantoms for Tube Current Modulation and Automatic Exposure Control. Annual Meeting of Radiological Society of North America (RSNA) 2012, 25 - 30 November 2012, Chicago, USA (2012)
    http://rsna2012.rsna.org/search/event_display.cfm?em_id=12028342
  17. K. Nomura et al. Examination of the dose distribution of the subject of the CT-AEC dose modulation using software simulation. 40th Autumn Scientific Congress of the Japanese Society of Radiological Technology (JSRT) 2012, 4 - 6 October 2012, Tokyo, Japan (2012)
    http://www.jsrt.or.jp/event/shuki40_p-proippan5.html
  18. K. Fujii et al. A study of the effects of dose calculation for various CT devices using simulation software. 40th Autumn Scientific Congress of the Japanese Society of Radiological Technology (JSRT) 2012, 4 - 6 October 2012, Tokyo, Japan (2012)
    http://www.jsrt.or.jp/event/shuki40_p-proippan5.html
  19. T. Arai et al. Estimation of the bow-tie filter for improving the accuracy of the simulation of CT dose distributions. 40th Autumn Scientific Congress of the Japanese Society of Radiological Technology (JSRT) 2012, 4 - 6 October 2012, Tokyo, Japan (2012)
    http://www.jsrt.or.jp/event/shuki40_p-proippan5.html
  20. W. A. Kalender. CTDI and patient dose: a European perspective. 54th Annu. Meeting of the AAPM, Med. Phys.39, 3906
    http://dx.doi.org/10.1118/1.4735945
  21. P. Toroi. Interpretation of measured dose data in X-ray imaging. Congress of the International Radiation Protection Association (IRPA) 2012. 14 – 18 May 2012, Glasgow, UK (2012)
  22. P. Toroi. General introduction: From measured dose to organ doses. Monte Carlo simulations and available programs. NACP course: Patient dosimetry within diagnostic radiology, 30 January – 1 Februar 2012, Göteborg, Sweden (2012)
    http://www.ddsc.se/appdos/tue/tue_pt.pdf
  23. W. Chen, D. Kolditz, M. Hupfer, Y. Smal, W. A. Kalender. Implementation and Validation of a Real Time Monte Carlo Software Tool for Patient-specific Dose Calculations. Annual Meeting of Radiological Society of North America (RSNA) 2011, 27 November- 2 December 2011, Chicago, USA (2011)
    http://rsna2011.rsna.org/search/event_display.cfm?am_id=2&em_id=11004865
  24. D. Kolditz, M. Beister, and W. A. Kalender. Volume-of-Interest Imaging for High Image Quality at Reduced Dose in Dedicated Female Breast CT. Annual Meeting of Radiological Society of North America (RSNA) 2011, 27 November - 2 December 2011, Chicago, USA (2011)
    http://rsna2011.rsna.org/search/event_display.cfm?am_id=2&em_id=11008972
  25. F. Lück, M. Weigel, D. Kolditz, S. V. Vollmar, M. Hupfer, W. A. Kalender. Effect of Shaped Filters Designed for Breast CT on Dose and Image Quality. Annual Meeting of Radiological Society of North America (RSNA) 2011, 27 November - 2 December 2011, Chicago, USA (2011)
    http://rsna2011.rsna.org/search/event_display.cfm?am_id=2&em_id=11010918
  26. T. Nowak, M. Hupfer, R. Brauweiler, F. Eisa, W. A. Kalender. Potential of High-Z Contrast Agents in Clinical Computed Tomography. Annual Meeting of Radiological Society of North America (RSNA) 2011, 27 November - 2 December 2011, Chicago, USA (2011)
    http://rsna2011.rsna.org/search/event_display.cfm?am_id=2&em_id=11008021
  27. M. Hupfer, T. Nowak, D. Kolditz, F. Eisa, R. Brauweiler, and W. A. Kalender. Dosimetry in Micro-CT. Annual Meeting of Radiological Society of North America (RSNA) 2011, 27 November - 2 December 2011, Chicago, USA (2011)
  28. Y. Smal, W. Chen, D. Kolditz, B. Schmidt, W. A. Kalender. Fast and On-line Estimation of CT Dose for Pediatric Patients. Annual Meeting of Radiological Society of North America (RSNA) 2011, 27 November - 2 December 2011, Chicago, USA (2011)
  29. Y. Smal, W. Chen, D. Kolditz, C. S. dos Reis, W. A. Kalender. Conversion of the Dose-length Product into Effective Dose Taking Recent ICRP Recommendations into Account. Annual Meeting of Radiological Society of North America (RSNA) 2011, 27 November - 2 December 2011, Chicago, USA (2011)
  30. M. Weigel, S. Vollmar, W. A. Kalender. Estimations of Dose for Dedicated Breast CT at Optimized Settings with Respect to Lesion Type and Size. Annual Meeting of Radiological Society of North America (RSNA) 2010, 28 November - 3 December 2010, Chicago, USA (2010)
    http://rsna2010.rsna.org/search/event_display.cfm?em_id=9002796
  31. Y. Smal, P. Deak, W. A. Kalender. Assessment of Effective Dose for Pediatric Patients Undergoing Dual-Source Standard and High-Pitch Cardiac CT Examinations. Annual Meeting of Radiological Society of North America (RSNA) 2010, 28 November - 3 December 2010, Chicago, USA (2010)
    http://rsna2010.rsna.org/search/event_display.cfm?em_id=9011200
  32. H. Braun, Y. Kyriakou, W. A. Kalender. Dose Reduction in Interventional Flat Detector CT through Volume-of-Interest Imaging with Highly Attenuating Added Filters. Annual Meeting of Radiological Society of North America (RSNA) 2009, 29 November - 4 December 2009, Chicago, USA (2009)
    http://rsna2009.rsna.org/search/event_display.cfm?em_id=8016275&printmode=Y&autoprint=N
  33. Y. Smal, P. Deak, W. A. Kalender. Conversion of the CT Dose-Length Products to Effective Dose for Different Voltages and Anatomic Regions. Annual Meeting of Radiological Society of North America (RSNA) 2009, 29 November - 4 December 2009, Chicago, USA (2009)
    http://rsna2009.rsna.org/search/event_display.cfm?em_id=8016539&printmode=Y&autoprint=N
  34. M. Weigel, S. Vollmar, R. Brauweiler, M. Hupfer, T. Nowak, W. A. Kalender. Optimization of Spectra for Dedicated Breast CT with Respect to Image Quality and Dose. Annual Meeting of Radiological Society of North America (RSNA) 2009, 29 November - 4 December 2009, Chicago, USA (2009)
    http://rsna2009.rsna.org/search/event_display.cfm?em_id=8002365&printmode=Y&autoprint=N
  35. P. Deak, Y. Smal, M. Lell, S. Achenbach, W. A. Kalender. Dose Assessment for Dual-Source High-Pitch Protocols in Thoracic and Cardiac CT. Annual Meeting of Radiological Society of North America (RSNA) 2009, 29 November - 4 December 2009, Chicago, USA (2009)
    http://rsna2009.rsna.org/search/event_display.cfm?em_id=8015904&printmode=Y&autoprint=N
  36. J. Damilakis, K. Perisinakis, and A. Tzedakis. Estimation of Uterus Dose From Abdominal CT Examinations Using a New Patient-Specific Monte Carlo Software Package. AAPM Annual Meeting 2009, 26 - 30 July 2009, Anaheim, USA (2009)
    http://dx.doi.org/10.1118/1.3181177
  37. P. Deak, Y. Kyriakou, W. A. Kalender. Calculations of Dose to the Patient and the Physician in Interventional Radiology Using C-arm CT. Annual Meeting of Radiological Society of North America (RSNA) 2008, 30 November - 5 December 2008, Chicago, USA (2008)
    http://rsna2008.rsna.org/event_display.cfm?em_id=6011377
  38. P. Deak, O. Langner, M. Lell, W. A. Kalender. Dose Assessment in Multislice Computed Tomography (CT) with a Shield against Z-Overscanning. Annual Meeting of Radiological Society of North America (RSNA) 2008, 30 November - 5 December 2008, Chicago, USA (2008)
    http://rsna2008.rsna.org/event_display.cfm?em_id=6010426
  39. S. Vollmar, M. Weigel, W. A. Kalender. Dose Distributions and Image Quality in CT of the Breast as a Function of Projection Angle Range. Annual Meeting of Radiological Society of North America (RSNA) 2008, 30 November - 5 December 2008, Chicago, USA (2008)
    http://rsna2008.rsna.org/event_display.cfm?em_id=6007041
  40. Y. Kyriakou, P. Deak, O. Langner, W. A. Kalender. Usefulness of computed tomography dose index (CTDI) and practical dosimetry for flat-detector CT. European Congress of Radiology (ECR) 2008, 7 - 11 March 2008, Vienna, Austria (2008)
    http://www.abstractsonline.com/viewer/viewAbstractPrintFriendly.asp?CKey={8D15DBDC-DF81-426D-A4DB-D06036D36C96}&SKey={A8E45AC8-292C-4068-BBEF-862964425CC1}&MKey={9AF35541-5128-444B-9D15-447022358A3F}&AKey={4C04E97A-9E50-40FE-8CFB-613AC033994F}
  41. S. Vollmar, W. A. Kalender. Dedicated breast CT at the same exposure level as two-view mammography: Influence of detector pixel size and focal spot size on image quality. European Congress of Radiology (ECR) 2008, 7 - 11 March 2008, Vienna, Austria (2008)
    http://www.abstractsonline.com/viewer/viewAbstractPrintFriendly.asp?CKey={693F1D81-BCA6-44E4-9B70-1C9E66DB24B9}&SKey={A8E45AC8-292C-4068-BBEF-862964425CC1}&MKey={9AF35541-5128-444B-9D15-447022358A3F}&AKey={4C04E97A-9E50-40FE-8CFB-613AC033994F}
  42. W. A. Kalender, S. Buchenau, Y. Kyriakou. Optimal Choice of X-ray Spectra for Pediatric and for General CT. Annual Meeting of Radiological Society of North America (RSNA) 2007, 25 - 30 November 2007 (2007)
    http://rsna2007.rsna.org/rsna2007/v2007/conference/event_display.cfm?id=66601&em_id=5010908
  43. P. Deak, M. Van Straten, W. A. Kalender. Validation of a Monte Carlo (MC) based tool for patient-specific dose calculations in x-ray computed tomography. European Congress of Radiology (ECR) 2007, 9 - 13 March 2007, Vienna, Austria (2007)
  44. M. Van Straten, G. Staatz, W. A. Kalender. Optimization of pediatric computed tomography (CT) examinations by simulation of low-dose CT scans with a dose tutor program. European Congress of Radiology (ECR) 2007, 9 - 13 March 2007, Vienna, Austria (2007)
  45. M. Van Straten, P. Deak, W. A. Kalender. Automatic Exposure Control: How to Estimate Patient Organ Doses When Detailed Information on the Modulated Tube Current Is Not Available. Annual Meeting of Radiological Society of North America (RSNA) 2006, 26 November - 1 December 2006, Chicago, USA (2006)
  46. M. Van Straten, P. Deak, W. A. Kalender. Patient-Specific Organ Dose Determination for Patients of Varying Size on CT Scanners with Automatic Exposure Control (AEC). Annual Meeting of Radiological Society of North America (RSNA) 2006, 26 November - 1 December 2006, Chicago, USA (2006)
    http://rsna2006.rsna.org/rsna2006/v2006/conference/event_display.cfm?id=66601&em_id=4437319
  47. S. Vollmar, P. Deak, W. A. Kalender. Reduction of Dose to the Female Breast in Chest CT: A Comparison of Standard Protocols, Tube Current Modulated, Partial, and Bismuth-shielded Scans. Annual Meeting of Radiological Society of North America (RSNA) 2006, 26 November - 1 December 2006, Chicago, USA (2006)
    http://rsna2006.rsna.org/rsna2006/v2006/conference/event_display.cfm?id=66601&em_id=4429297
  48. W. A. Kalender, S. Buchenau. Optimal X-ray Energies in Pediatric CT with Regard to Contrast, Noise, and Dose. Annual Meeting of Radiological Society of North America (RSNA) 2006, 26 November - 1 December 2006, Chicago, USA (2006)
  49. Y. Kyriakou, P. Deak, O. Langner, W. A. Kalender. A Method for Dose Assessment in Flat-Panel Detector CT Combining Monte Carlo and Measurement Methods. Annual Meeting of Radiological Society of North America (RSNA) 2006, 26 November - 1 December 2006, Chicago, USA (2006)
    http://rsna2006.rsna.org/rsna2006/v2006/conference/event_display.cfm?id=66601&em_id=4434272

Version History

ImpactMC is continuously improved and adapted to the needs of our customers. The version history transparently shows all improvements and extensions in a new version. If you experience problems, please report them via email to This email address is being protected from spambots. You need JavaScript enabled to view it.. If the problem is caused by a software bug, we will try to fix this in the next version of ImpactMC. Of course, suggestions are also always welcome.

1.6.1 (published 2016/04/14)

  • FEATURE: Added Japanese user manual (by ToyoMedic Co.)
  • FEATURE: Small improvements for the installer
  • BUGFIX: Bugfixes for multiple minor issues

1.6 (published 2016/02/08)

  • FEATURE: Introduced volume merge tool for both DICOM and RAW dose volumes
  • FEATURE: The simulation time is now shown besides the number of simulated photons
  • FEATURE: More materials are now available in the spectrum generation dialog
  • FEATURE: More filters can now be used in the spectrum generation dialog
  • FEATURE: It is now possible to simulate dose deposited in air
  • FEATURE: The stop criteria for finished simulations can now be modified
  • FEATURE: The last window position and state is now restored when ImpactMC is restarted
  • FEATURE: The build-in sensation 64 spectra were replaced with txt files in the examples
  • FEATURE: Added example project using batch processing to modify XML parameters
  • BUGFIX: Dose was deposited also for voxels behind the tube
  • BUGFIX: /AUTOEXPORT only worked if the working directory was identical to project directory
  • BUGFIX: Under certain circumstances the status bar became black and was no longer refreshed
  • MANUAL: Added information on how to measure air-kerma in systems without full rotation capability
  • MANUAL: Added a description on how to perform simulations with dose in air
  • MANUAL: Improved how-to for performing localizer scans
  • MANUAL: Improved the FAQ section on how to measure air kerma
  • MANUAL: Improve description on how to perform measurements for defining a shaped filter with dose values

1.5.2 (published 2015/06/01)

  • BUGFIX: Bugfixes for multiple minor issues

1.5.1 (published 2015/02/19)

  • FEATURE: Allow to blend CT and dose images for better organ segmentation
  • FEATURE: Added comboboxes and checkboxes to the parameter list in the GUI
  • BUGFIX: Exporting a dose distribution as RAW failed with binned simulations
  • BUGFIX: Selection of a different DICOM folder in an existing project failed
  • BUGFIX: Names of scan and simulation param xml files were swapped in new projects

1.5 (published 2015/01/23)

  • FEATURE: Added a dialog for creating tucker spectra as txt files
  • FEATURE: Allow the user to select between the available color LUTs for the dose view
  • FEATURE: Transmittance and dose-based shaped filter definitions are now possible
  • FEATURE: Allow to easily save/export a copy of a project
  • FEATURE: Allow to switch between GPU and CPU mode in the GUI without restarting
  • FEATURE: Replaced separate GPU/CPU shortcuts (GPU is automatically chosen if available)
  • FEATURE: Added support for materials defined via volume fractions or elemental compositions
  • FEATURE: Automatically switch to dose view on the first dose update
  • FEATURE: Renamed project file extension to .mcproj and added file association
  • FEATURE: Improved naming scheme and content of the example data sets
  • BUGFIX: In some projects NumberOfPhotonsPerformed was reported to have an invalid value
  • BUGFIX: Exported raw dose distributions had different file names than originally chosen
  • MANUAL: Added a FAQ to the user manual "Can I define my own dose color schemes..."
  • MANUAL: Improvements and additional information in many sections

1.4 (published 2014/04/04)

  • FEATURE: Users can now define and use their own materials
  • FEATURE: All ICRU 44, ICRU 46 and ICRU 110 materials are now available
  • FEATURE: Voxel-binning is now available in the MC simulation for limited memory or speedup
  • FEATURE: Switching between dose and input now keeps the position and zoom level
  • FEATURE: The last 5 projects are now shown in a recent project list
  • FEATURE: The license administrator is now available for showing the license status
  • FEATURE: More detailed error messages if something in the input parameters is wrong
  • FEATURE: Better handling of file loading errors if referenced files are not readable
  • FEATURE: Export to bin/raw also writes an xml file with the required volume information
  • FEATURE: Added localizer example for the TomoScope micro CT dataset
  • BUGFIX: The table increment of spiral scans was inverted if negative rotation direction was selected
  • BUGFIX: Fixed small errors in the organ dose calculation sheet
  • BUGFIX: Fixed a bug in "finish simulation" which could lead to minor dose differences
  • BUGFIX: Fixed invalid program state after an "insufficient GPU memory" error has occurred
  • BUGFIX: Fixed relative path handling when saving the project
  • MANUAL: Added description to the user manual "How to Model Dual-Source/Dual-Energy CT Scans"
  • MANUAL: Added section for user-defined materials
  • MANUAL: Added a FAQ to the user manual "What can I do if memory exceptions occur"
  • MANUAL: Updated list of available materials

1.3.1 (published 2013/08/05)

  • FEATURE: Exported DICOM dose distributions preserve a lot more fields from the input data
  • FEATURE: Relative paths are now used for all files and folders within the project folder
  • BUGFIX: Coronal and sagittal views are no longer upside-down
  • BUGFIX: Creating a new project and running a simulation without save/reload no longer fails
  • BUGFIX: Fixed crash when a new project is created while a simulation is still running
  • MANUAL: A link to the user manual is now created in the start menu

1.3 (published 2013/06/27)

  • FEATURE: Added MPR view with additional coronal and sagittal view of input and dose
  • FEATURE: Added a dialog for CTDI calculations
  • FEATURE: Better DICOM reading support (supports most compressed images, no Jpeg2k)
  • FEATURE: Removed NumberOfPhotonsPerScan (makes separate CPU/GPU projects unnecessary)
  • FEATURE: Simulations can now run until a given number of photons is reached
  • FEATURE: Simulations can now also run infinitly until finished by the user
  • FEATURE: Unified shaped filters (all are now handled as external filters)
  • FEATURE: Added suport for new driverless dongles
  • FEATURE: Removed ForceInteraction parameter
  • BUGFIX: fixed index positions shown on mouse-over
  • MANUAL: Added FAQ section with many answers to recent questions by our customers
  • MANUAL: Fixed some minor errors and broken links

1.2.9.1 (published 2012/10/19)

  • BUGFIX: On some systems, version 1.2.9 did not start and showed an error message

1.2.9 (published 2012/10/16)

  • FEATURE: Simulation with asymmetric collimation is now possible
  • FEATURE: Simulation with dynamic collimation is now possible
  • FEATURE: Excel sheet helps with the computation of organ and effictive dose levels
  • FEATURE: Added an example data set of a head for C-arm flat detector CT
  • FEATURE: ROIs now show absolute instead of relative dose values
  • BUGFIX: Demo-mode activation no longer requires administrative rights
  • MANUAL: Added description to the user manual "How to calculate CTDI values from dose distributions"
  • MANUAL: Added documentation of the new collimation modes

1.2.8 (published 2012/06/06)

  • FEATURE: Add command line options to load, start, save and exit a project
  • FEATURE: Simulation of a topogram/localizer is now possible
  • FEATURE: Switched to CUDA 4.1 (improved performance, NVIDIA driver update necessary!)
  • FEATURE: Introduced a "clear" button behind each "browse" button
  • FEATURE: Added an example for micro-ct (our TomoScope system)
  • FEATURE: Selection of rotation direction is now possible
  • FEATURE: Negative z-increments are now possible
  • FEATURE: A message is now shown to inform that the export of the dose distributation was successful
  • FEATURE: All parameters in the scan and simulationparamerter xmls are now commented
  • FEATURE: Non-DICOM files in DICOM folders are now ignored
  • FEATURE: The manual is now available in the help menu as PDF document
  • BUGFIX: User defined file paths were not shown completely/correctly
  • BUGFIX: Number of projections might have been incorrect due to wrong rounding
  • BUGFIX: Delete unused and old nodes in scan and simulationparameter xmls of the examples
  • BUGFIX: DICOM files without a normal/archive or read-only flag were not loaded
  • BUGFIX: Fixed problems with density/material conversion files in another folder than the project folder
  • BUGFIX: Removed unused spectrum files from the installer
  • MANUAL: Added description to the user manual "How to model topogram/localizer"
  • MANUAL: Added description to the user manual "How to model cone-beam CT"
  • MANUAL: Added documentation of command line parameters
  • MANUAL: Added GeForce 600 series as supported CUDA-capable GPUs

1.2.7 (published 2012/03/07)

  • FEATURE: Error-MessageBox now shows more details on the occured error
  • FEATURE: Needed redistributables are now checked and installed during installation
  • FEATURE: The internal spectrum file format is now also supported for external files
  • FEATURE: Show more information on the platform under "Help/About ImpactMC"
  • FEATURE: Removed parameters which were not usefull to be user editable
  • BUGFIX: ImpactMC is now more robust when loading defect/wrong files
  • BUGFIX: View/Dose claimed no sim present at loaded datasets
  • BUGFIX: Starting a loaded, finished Project could result in empty dose view
  • BUGFIX: Selecting a wrong file as spectrum resulted in an unhandled exception
  • BUGFIX: Status bar was not always updated
  • BUGFIX: Loading a new project while a project was active sometimes crashed ImpactMC
  • BUGFIX: Internal spectrum was not restored when saving and reloading a project
  • BUGFIX: Text fields showed invalid values if entered by the user, although an error was shown
  • BUGFIX: If a simulation is started multiple times without clearing, the dose values were wrong
  • BUGFIX: Large datasets could neither be loaded nor simulated (now up to 2 GB data on 64 Bit)
  • BUGFIX: Loading a wrong project file crashed the program
  • BUGFIX: The 32 Bit version of the program crashed due to memory limitations
  • BUGFIX: Fixed problems with export of dose distributions to DICOM files
  • BUGFIX: Resorting the parameters could lead to manipulating wrong parameters
  • MANUAL: Added minimal system requirements to the user manual
  • MANUAL: GeForce GTX 570 was missing in the user guide
  • MANUAL: Adapted to removed simulation parameters

1.2.6 (published 2011/10/10)

  • FEATURE: DICOM datasets with incompatible orientation are denied loading
  • BUGFIX: Reading of DICOM datasets with signed values (e.g. Toshiba Aquilion)
  • BUGFIX: Binary output has NaN instead of 0 in some voxels
  • MANUAL: Coordinate system in application view
  • MANUAL: Shaped Filters and Planar filters more detailed
  • MANUAL: Radiography more detailed

1.2.5 (published 2011/07/27)

  • FEATURE: GUI title now shows if CPU or GPU version is running
  • FEATURE: Localizer/Topogramm/Scoutview mode is now possible
  • BUGFIX: "Clear Simulation" freezes
  • BUGFIX: Missing/Wrong Z-position in exported DICOM
  • BUGFIX: Sensation64 could not be loaded
  • BUGFIX: Reading DICOM from CD-Rom
  • BUGFIX: GUI crashes when memory validation fails
  • BUGFIX: Viewing dose of loaded projects was not possible
  • BUGFIX: ConvertToDoseInAir with CTDI options

1.2.4 (published 2011/04/07)

  • BUGFIX: When choosing a new Volume for an existing dataset, DICOM doesn't result in an error
  • BUGFIX: NSIS Installer did link to CPU Version in the GPU Entry of Startmenu
  • BUGFIX: Loading project files in Windows Vista/7 fails if relative paths were used

 

Trial & Further Questions

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