Design of front-end electronic circuits for dedicated PET detectors

Author

Zhang, Nan ; Thompson, Christopher J. ; Togane, Dylan ; Cayouette, Francois ; Nguyen, Khanh Q. ; Camborde, Marie-Laure

Author_Institution

Dept. of Biomed. Eng., McGill Univ., Montreal, Que., Canada

Volume

4

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

1984

Lastpage

1987

Abstract

The new high spatial resolution PET detectors for small animal and breast imaging have been designed. Position-sensitive photo-multipliers (R7600-C12) and dual-layer pixelated BGO crystals are employed to detect and localize gamma rays. A modified high-voltage divider with last dynode readout circuits, a front-end positioning readout circuits, and a last dynode timing amplifier have been investigated and developed for these detectors. Methods for combining four PS-PMTs with simple X-, X+, Y-, and Y+ outputs have been developed to further simplify the positioning processing. The front-end circuits are small so they can be fit in the detector´s structure. A prototype of two detector modules, each having two PS-PMTs with corresponding electronic circuits, has been built for evaluation

Keywords

amplifiers; biomedical electronics; gamma-ray detection; mammography; nuclear electronics; photomultipliers; position sensitive particle detectors; positron emission tomography; readout electronics; solid scintillation detectors; Bi₄Ge₃O₁₂; R7600-C12; breast imaging; dual-layer pixelated crystals; dynode readout circuits; dynode timing amplifier; electronic circuits; front-end electronic circuits design; front-end positioning readout circuits; gamma ray detection; high spatial resolution PET detectors; high-voltage divider; position-sensitive photomultipliers; positron emission tomography; small animal imaging; solid scintillation detectors; Animals; Breast; Crystals; Detectors; Electronic circuits; Gamma ray detection; High-resolution imaging; Optical imaging; Positron emission tomography; Spatial resolution;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2001 IEEE

Conference_Location

San Diego, CA

ISSN

1082-3654

Print_ISBN

0-7803-7324-3

Type

conf

DOI

10.1109/NSSMIC.2001.1009213

Filename

1009213