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Development of a gamma-ray imager using a large area monolithic 4 × 4 mppc array for a future pet scanner

We report the development of a monolithic MPPC array, which consists of 3 × 3 mm 2 elements arranged as a 4 × 4 array manufactured by Hamamatsu applicable to next generation PET scanners. We show that the MPPC is suitable for time of flight PET applications by simple measurement using coincident bac... Full description

Journal Title: Journal of Instrumentation 2012, Vol.7(01), p.C01083
Main Author: T Nakamori
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: ; E-ISSN: 1748-0221 ; DOI: 10.1088/1748-0221/7/01/C01083
Link: http://dx.doi.org/10.1088/1748-0221/7/01/C01083
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recordid: iop10.1088/1748-0221/7/01/C01083
title: Development of a gamma-ray imager using a large area monolithic 4 × 4 mppc array for a future pet scanner
format: Article
creator:
  • T Nakamori
subjects:
  • Gamma Rays
  • Detectors
  • Energy Resolution
  • Tomography
  • Sampling
  • Scanners
  • Positron Emission
  • Arrays
  • Instruments and Measurements (So)
ispartof: Journal of Instrumentation, 2012, Vol.7(01), p.C01083
description: We report the development of a monolithic MPPC array, which consists of 3 × 3 mm 2 elements arranged as a 4 × 4 array manufactured by Hamamatsu applicable to next generation PET scanners. We show that the MPPC is suitable for time of flight PET applications by simple measurement using coincident back-to-back 511 keV gamma rays. We demonstrated that the MPPC has much better timing resolution of 600 ps than the APD. We coupled the monolithic MPPC array with the Ce:LYSO and Pr:LuAG scintillator matrices as gamma-ray detectors. The energy resolutions were evaluated as 14 % with 662 keV gamma-rays and the Ce:LYSO achieved the best. We also used a resistor network readout circuit with some optimization. The averaged positional resolution is estimated as 0.27 mm in both x and y directions, while the energy resolution of each pixel was 9.9% for 662 keV gamma rays. Finally we applied the GHz class fast sampling waveform acquisition system to improve performance, and demonstrated efficient noise reduction by the clear detection of 22 keV gamma rays.
language: eng
source:
identifier: ISSN: ; E-ISSN: 1748-0221 ; DOI: 10.1088/1748-0221/7/01/C01083
fulltext: fulltext
issn:
  • 1748-0221
  • 17480221
url: Link


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titleDevelopment of a gamma-ray imager using a large area monolithic 4 × 4 mppc array for a future pet scanner
creatorT Nakamori
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descriptionWe report the development of a monolithic MPPC array, which consists of 3 × 3 mm 2 elements arranged as a 4 × 4 array manufactured by Hamamatsu applicable to next generation PET scanners. We show that the MPPC is suitable for time of flight PET applications by simple measurement using coincident back-to-back 511 keV gamma rays. We demonstrated that the MPPC has much better timing resolution of 600 ps than the APD. We coupled the monolithic MPPC array with the Ce:LYSO and Pr:LuAG scintillator matrices as gamma-ray detectors. The energy resolutions were evaluated as 14 % with 662 keV gamma-rays and the Ce:LYSO achieved the best. We also used a resistor network readout circuit with some optimization. The averaged positional resolution is estimated as 0.27 mm in both x and y directions, while the energy resolution of each pixel was 9.9% for 662 keV gamma rays. Finally we applied the GHz class fast sampling waveform acquisition system to improve performance, and demonstrated efficient noise reduction by the clear detection of 22 keV gamma rays.
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subjectGamma Rays ; Detectors ; Energy Resolution ; Tomography ; Sampling ; Scanners ; Positron Emission ; Arrays ; Instruments and Measurements (So);
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titleDevelopment of a gamma-ray imager using a large area monolithic 4 × 4 MPPC array for a future PET scanner
descriptionWe report the development of a monolithic MPPC array, which consists of 3 × 3 mm 2 elements arranged as a 4 × 4 array manufactured by Hamamatsu applicable to next generation PET scanners. We show that the MPPC is suitable for time of flight PET applications by simple measurement using coincident back-to-back 511 keV gamma rays. We demonstrated that the MPPC has much better timing resolution of 600 ps than the APD. We coupled the monolithic MPPC array with the Ce:LYSO and Pr:LuAG scintillator matrices as gamma-ray detectors. The energy resolutions were evaluated as 14 % with 662 keV gamma-rays and the Ce:LYSO achieved the best. We also used a resistor network readout circuit with some optimization. The averaged positional resolution is estimated as 0.27 mm in both x and y directions, while the energy resolution of each pixel was 9.9% for 662 keV gamma rays. Finally we applied the GHz class fast sampling waveform acquisition system to improve performance, and demonstrated efficient noise reduction by the clear detection of 22 keV gamma rays.
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abstractWe report the development of a monolithic MPPC array, which consists of 3 × 3 mm 2 elements arranged as a 4 × 4 array manufactured by Hamamatsu applicable to next generation PET scanners. We show that the MPPC is suitable for time of flight PET applications by simple measurement using coincident back-to-back 511 keV gamma rays. We demonstrated that the MPPC has much better timing resolution of 600 ps than the APD. We coupled the monolithic MPPC array with the Ce:LYSO and Pr:LuAG scintillator matrices as gamma-ray detectors. The energy resolutions were evaluated as 14 % with 662 keV gamma-rays and the Ce:LYSO achieved the best. We also used a resistor network readout circuit with some optimization. The averaged positional resolution is estimated as 0.27 mm in both x and y directions, while the energy resolution of each pixel was 9.9% for 662 keV gamma rays. Finally we applied the GHz class fast sampling waveform acquisition system to improve performance, and demonstrated efficient noise reduction by the clear detection of 22 keV gamma rays.
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date2012-01-01