Preliminary Research of CZT Based PET System Development in KAERI

Jo, Woo Jin; Jeong, Manhee; Kim, Han Soo; Kim, Sang Yeol; Ha, Jang Ho

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자료유형: 학술저널

저자정보: Jo, Woo Jin (Advanced Radiation Detection Instrument & Sensor Lab., Korea Atomic Energy Research Institute) Jeong, Manhee (Advanced Radiation Detection Instrument & Sensor Lab., Korea Atomic Energy Research Institute) Kim, Han Soo (Advanced Radiation Detection Instrument & Sensor Lab., Korea Atomic Energy Research Institute) Kim, Sang Yeol (Notice Co., Ltd.) Ha, Jang Ho (Advanced Radiation Detection Instrument & Sensor Lab., Korea Atomic Energy Research Institute)

저널정보: 대한방사선방어학회 방사선방어학회지 방사선방어학회지 제41권 제2호

발행연도: 2016.1

수록면: 81 - 86 (6page)

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Background: For positron emission tomography (PET) application, cadmium zinc telluride (CZT) has been investigated by several institutes to replace detectors from a conventional system using photomultipliers or Silicon-photomultipliers (SiPMs). The spatial and energy resolution in using CZT can be superior to current scintillator-based state-of-the-art PET detectors. CZT has been under development for several years at the Korea Atomic Energy Research Institute (KAERI) to provide a high performance gamma ray detection, which needs a single crystallinity, a good uniformity, a high stopping power, and a wide band gap. Materials and Methods: Before applying our own grown CZT detectors in the prototype PET system, we investigated preliminary research with a developed discrete type data acquisition (DAQ) system for coincident events at 128 anode pixels and two common cathodes of two CZT detectors from Redlen. Each detector has a $19.4{\times}19.4{\times}6mm^3$ volume size with a 2.2 mm anode pixel pitch. Discrete amplifiers consist of a preamplifier with a gain of $8mV{\cdot}fC^{-1}$ and noise of 55 equivalent noise charge (ENC), a $CR-RC^4$ shaping amplifier with a $5{\mu}s$ peak time, and an analog-to-digital converter (ADC) driver. The DAQ system has 65 mega-sample per second flash ADC, a self and external trigger, and a USB 3.0 interface. Results and Discussion: Characteristics such as the current-to-voltage curve, energy resolution, and electron mobility life-time products for CZT detectors are investigated. In addition, preliminary results of gamma ray imaging using 511 keV of a $^{22}Na$ gamma ray source were obtained. Conclusion: In this study, the DAQ system with a CZT radiation sensor was successfully developed and a PET image was acquired by two sets of the developed DAQ system.

#PET #CZT #Room-temperature semiconductor radiation detector #DAQ

참고문헌 (7)

참고문헌 신청

Vandenberghe S / 2015 / PET-MRI: a review of challenges and solutions in the development of integrated multimodality imaging / Phys. Med. Biol 60(4):R115~R154

Zhang F / 2005 / Feasibility study of using two 3-D position sensitive CZT detectors for small animal PET / IEEE Nucl. Sci. Symp. Conf. Rec

Upp DL / 2005 / New cooling methods for HPGe detectors and associated electronics / Jour. Radioanal. Nucl. Chem 264:567~575

James RB / 1995 / Semiconductors for room temperature nuclear detector applications / Academic Press Inc :335~381

Knoll GF / 2010 / Radiation Detection and Measurement / Wiley :365~414

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Jo, Woo Jin

소속기관 Advanced Radiation Detection Instrument & Sensor Lab., Korea Atomic Energy Research Institute