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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.11
- 수록면
- 3,790 - 3,797 (8page)
- DOI
- https://doi.org/10.1016/j.net.2021.05.032
이용수
초록· 키워드
오류제보하기
Although the individual channel readout method can improve the performance of PET detectors withpixelated photo-sensors, such as silicon photomultiplier (SiPM), this method leads to a significant increase in the number of readout channels. In this study, we proposed a novel multiplexing method thatcould effectively reduce the number of readout channels to reduce system complexity and developmentcost. The proposed multiplexing circuit was designed to generate bipolar pulses with different zerocrossing points by adjusting the time constant of the high-pass filter connected to each channel of apixelated photo-sensor. The channel position of the detected gamma-ray was identified by estimatingthe width between the rising edge and the zero-crossing point of the bipolar pulse. In order to evaluatethe performance of the proposed multiplexing circuit, four detector blocks, each consisting of a 4 4array of 3 mm 3 mm 20 mm LYSO and a 4 4 SiPM array, were constructed. The average energyresolution was 13.2 ± 1.1% for all 64 crystal pixels and each pixel position was accurately identified. Acoincidence timing resolution was 580 ± 12 ps. The experimental results indicated that the novelmultiplexing method proposed in this study is able to effectively reduce the number of readout channelswhile maintaining accurate position identification with good energy and timing performance. In addition, it could be useful for the development of PET systems consisting of a large number of pixelateddetectors.
목차
등록된 정보가 없습니다.
참고문헌 (30)
참고문헌 신청
A. L. Goertzen / 2013 / Design and performance of a resistor multiplexing readout circuit for a SiPM detector / IEEE Trans. Nucl. Sci 60:1541~1549
J. H. Jung / 2010 / Development of a position decoder circuit for PET consisting of GAPD arrays / Nucl. Instrum. Methods Phys. Res. Sect. A Accel. Spectrom. Detect. Assoc. Equip 621:310~315
K. J. Hong / 2013 / A prototype MR insertable brain PET using tileable GAPD arrays / Med. Phys 40:042503
S. Lee / 2017 / Development of a multiplexed readout with high position resolution for positron emission tomography / Nucl. Instrum. Methods Phys. Res. Sect. A Accel. Spectrom. Detect. Assoc. Equip 850:42~47
M. F. Bieniosek / 2016 / Achieving fast timing performance with multiplexed SiPMs / Phys. Med. Biol 61:2879~2892
J. H. Jung / 2010 / Development of a position decoder circuit for PET consisting of GAPD arrays / Nucl. Instrum. Methods Phys. Res. Sect. A Accel. Spectrom. Detect. Assoc. Equip 621:310~315
K. J. Hong / 2013 / A prototype MR insertable brain PET using tileable GAPD arrays / Med. Phys 40:042503
S. Lee / 2017 / Development of a multiplexed readout with high position resolution for positron emission tomography / Nucl. Instrum. Methods Phys. Res. Sect. A Accel. Spectrom. Detect. Assoc. Equip 850:42~47
M. F. Bieniosek / 2016 / Achieving fast timing performance with multiplexed SiPMs / Phys. Med. Biol 61:2879~2892
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