Design and development of a gapless ring with modular PMT-quadrant-sharing detector (PQS) for a time-of-flight PET camera

Author

Hongdi Li ; Yuxuan Zhang ; Ramirez, Ricardo ; Shaohui An ; Chao Wang ; Shitao Liu ; Yun Dong ; Baghaei, Hossain ; Wai-Hoi Wong

Author_Institution

Dept. of Cancer Syst. Imaging, Univ. of Texas M.D. Anderson Cancer Center, Anderson, TX, USA

fYear

2013

fDate

Oct. 27 2013-Nov. 2 2013

Firstpage

1

Lastpage

5

Abstract

We have successfully developed a new high-resolution PMT-Quadrant-Sharing (PQS)[1] PET panel detector system. Each bank consists of 48 × 112 LYSO detector elements with a pixel size of 2.35 × 2.35 × 15.5 mm³. After grinding a regular detector bank into a half pentagon shape with tapered-end crystals, 24 half pentagon banks will form a gapless cylindrical ring with 87-cm in diameter and 27.6-cm in axial FOV. Two gapless adjacent panels share one row of PMT to extend the PQS configuration beyond one panel for maximizing the PMT usage economically. The entire ring has 504 PQS blocks consisted of 129,024 detectors and coupled to 576 PMTs (φ 38-mm). The aim of this study is to achieve an optimized PET system performance in spatial resolution, sensitivity, emission-scan duration, detector time-resolution, electronic simplicity, count-rate, manufacturing and service cost.

Keywords

biomedical electronics; biomedical equipment; cameras; design; lutetium compounds; photomultipliers; positron emission tomography; solid scintillation detectors; Lu_2(1-x)Y_2xSiO₅; PET system performance optimization; PMT coupling; PMT usage maximization; PQS blocks; PQS configuration; axial FOV; bank LYSO detector elements; count rate; detector time-resolution; electronic simplicity; emission-scan duration; gapless adjacent panels; gapless cylindrical ring design; gapless cylindrical ring development; gapless ring; half pentagon bank shape; high-resolution PQS PET panel detector system development; manufacturing; modular PMT-quadrant-sharing detector; pixel size; regular detector bank grinding; sensitivity; service cost; size 15.5 mm; size 2.35 mm; size 27.6 cm; size 87 cm; spatial resolution; tapered-end crystals; time-of-flight PET camera; Cameras; Crystals; Decoding; Detectors; Positron emission tomography; Sensitivity; Spatial resolution; PMT-Quadrant-Sharing; Positron emission tomography (PET); TOF; high-resolution; high-sensitivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE

Conference_Location

Seoul

Print_ISBN

978-1-4799-0533-1

Type

conf

DOI

10.1109/NSSMIC.2013.6829073

Filename

6829073