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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.6
- 수록면
- 1,947 - 1,954 (8page)
- DOI
- https://doi.org/10.1016/j.net.2020.12.010
이용수
초록· 키워드
오류제보하기
In the nuclear medicine imaging, quality control (QC) process using quadrant bar phantom is fundamentalaspect of evaluating the spatial resolution. In addition, QC process of gamma camera is performedby daily or weekly. Recently, Monte Carlo simulation using the Geant4 application for tomographicemission (GATE) is widely applied in the pre-clinical nuclear medicine field for modeling gamma cameraswith pixelated cadmium telluride (CdTe) semiconductor detector. In this study, we modeled apixelated CdTe semiconductor detector and quadrant bar phantom (0.5, 1.0, 1.5, and 2.0 mm bar thicknesses)using the GATE tool. Similarity analysis based on correlation coefficients and peak signal-to-noiseratios was performed to compare image qualities for various source to collimator distances (0, 2, 4, 6, and8 cm) and collimator lengths (0.2, 0.4, 0.6, 0.8, and 1.0 cm). To this end, we selected reference imagesbased on collimator length and source to collimator distance settings. The results demonstrate that as thecollimator length increases and the source to collimator distance decreases, the similarity to referenceimages improves. Therefore, our simulation results represent valuable information for the modeling ofCdTe-based semiconductor gamma imaging systems and QC phantoms in the field of nuclear medicine.
목차
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참고문헌 (21)
참고문헌 신청
G. Santin / 2003 / GATE : a geant4-based simulation platform for PET and SPECT integrating movement and time management / IEEE Trans. Nucl. Sci 50:1516~1521
S. Staelens / 2003 / Monte Carlo simulations of a scintillation camera using GATE : validation and application modeling / Phys. Med. Biol 48:3021~3042
R. Barquero / 2017 / 131I activity quantification of gamma camera planar images / Phys. Med. Biol 62:909~926
S. Staelens / 2006 / GATE simulations for optimization of pinhole imaging / Nucl. Instrum. Methods A 569:359~363
C. Scheiber / 2001 / Medical applications of CdTe and CdZnTe detectors / Nucl. Instrum. Methods A 458:12~25
S. Staelens / 2003 / Monte Carlo simulations of a scintillation camera using GATE : validation and application modeling / Phys. Med. Biol 48:3021~3042
R. Barquero / 2017 / 131I activity quantification of gamma camera planar images / Phys. Med. Biol 62:909~926
S. Staelens / 2006 / GATE simulations for optimization of pinhole imaging / Nucl. Instrum. Methods A 569:359~363
C. Scheiber / 2001 / Medical applications of CdTe and CdZnTe detectors / Nucl. Instrum. Methods A 458:12~25
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