Title :
Development of a multi-channel waveform-sampling front-end ASIC and DOI detector for APD based animal PET
Author :
Yeom, J.Y. ; Takahashi, H. ; Ishitsu, T. ; Nakazawa, M. ; Murayama, H.
Author_Institution :
Dept. of Quantum Eng. & Syst. Sci., Tokyo Univ., Japan
Abstract :
A new multi-channel waveform sampling front-end (WSFE) application specific integrated circuit (ASIC) for positron emission tomography (I5ET) has been developed to digitize signals from scintillating crystals at an early stage to suppress noise while facilitating signal processing. Each channel of the chip consists of a preamplifier, a variable gain amplifier (VGA) and a fast analog to digital converter (ADC). This multi-channel chip will be used to readout each pixel of a phoswich detector based on GSO scintillators coupled individually to a multi-array avalanche photodiode (APD). Two WSFE ASIC have been developed together with some low noise preamplifiers in a separate chip.
Keywords :
application specific integrated circuits; avalanche photodiodes; medical image processing; nuclear electronics; positron emission tomography; solid scintillation detectors; APD based animal PET; DOI detector; GSO scintillators; fast analog to digital converter; multi-array avalanche photodiode; multichannel waveform sampling front-end application specific integrated circuit; noise suppression; phoswich detector; positron emission tomography; preamplifier; scintillating crystals; signal processing; variable gain amplifier; Animals; Application specific integrated circuits; Crystals; Detectors; Gain; Integrated circuit noise; Positron emission tomography; Preamplifiers; Signal processing; Signal sampling;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2003 IEEE
Print_ISBN :
0-7803-8257-9
DOI :
10.1109/NSSMIC.2003.1352226
