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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 472 - 478 (7page)
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The patient dose incurred from diagnostic procedures during advanced radiotherapy hasbecome an important issue. Many researchers in medical physics are using computationalsimulations to calculate complex parameters in experiments. However, extendedcomputation times make it difficult for personal computers to run the conventional MonteCarlo method to simulate radiological images with high-flux photons such as imagesproduced by computed tomography (CT). To minimize the computation time withoutdegrading imaging quality, we applied a deterministic adaptation to the Monte Carlocalculation and verified its effectiveness by simulating CT image reconstruction for animage evaluation phantom (Catphan; Phantom Laboratory, New York NY, USA) and ahuman-like voxel phantom (KTMAN-2) (Los Alamos National Laboratory, Los Alamos, NM,USA). For the deterministic adaptation, the relationship between iteration numbers andthe simulations was estimated and the option to simulate scattered radiation was evaluated.
The processing times of simulations using the adaptive method were at least 500times faster than those using a conventional statistical process. In addition, compared withthe conventional statistical method, the adaptive method provided images that were moresimilar to the experimental images, which proved that the adaptive method was highlyeffective for a simulation that requires a large number of iterationsdassuming no radiationscattering in the vicinity of detectors minimized artifacts in the reconstructed image.
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참고문헌 (16)
참고문헌 신청
A.D. Lazarine / 2006 / Medical Physics Calculations with MCNP:™ a Primer / 석사 / Texas A&M University
A.M. Wysocka-Rabin / 2011 / Simulation of computed tomography (CT) images using a Monte Carlo approach / Nukleonika 56 : 299 ~ 304
American Association of Physicists in Medicine / 2007 / Medical physics: the management of imaging dose during image-guided radiotherapy: report Task Group 75, AAPM Task Grou
C. Lee / 2006 / Development of the two Korean adult tomographic computational phantoms for organ dosimetry / Med. Phys 33 : 380 ~ 390
C.R. Harrell / 1991 / Effect of Variance Reduction Techniques on Monte Carlo Simulated Energy Spectra / Bioengineering Conference, Proceedings of the 1991 IEEE Seventeenth Annual N
A.M. Wysocka-Rabin / 2011 / Simulation of computed tomography (CT) images using a Monte Carlo approach / Nukleonika 56 : 299 ~ 304
American Association of Physicists in Medicine / 2007 / Medical physics: the management of imaging dose during image-guided radiotherapy: report Task Group 75, AAPM Task Grou
C. Lee / 2006 / Development of the two Korean adult tomographic computational phantoms for organ dosimetry / Med. Phys 33 : 380 ~ 390
C.R. Harrell / 1991 / Effect of Variance Reduction Techniques on Monte Carlo Simulated Energy Spectra / Bioengineering Conference, Proceedings of the 1991 IEEE Seventeenth Annual N
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