A new generation of SPECT and PET systems based on position sensitive photomultipliers

Author

Singh, Manbir ; Leahy, Richard ; Oshio, Koichi ; Brechner, R. Ricardo ; Yan, Xiao Hong

Author_Institution

Dept. of Radiol., Univ. of Southern California, Los Angeles, CA, USA

Volume

37

Issue

3

fYear

1990

fDate

6/1/1990 12:00:00 AM

Firstpage

1321

Lastpage

1327

Abstract

The design and image reconstruction aspects of a head SPECT (single photon-emission computerized tomography), a body SPECT, and a body PET (photon emission tomography) system, all based on 13-cm-diameter position-sensitive photomultiplier tubes (PSPMTs) have been investigated. Wobbling is introduced to improve the resolution of the head SPECT from 1.2 cm to 0.9 cm at 10 cm. By combining data from adjacent tubes, the resolution of the body ring SPECT is improved from 2.1 cm to 1.7 cm at 20 cm. Sampling gaps are reduced in the ring PET after one rotational increment. Results of computer simulation studies to reconstruct tomographic images from these systems are presented. The PSPMT-based imaging systems greatly facilitate dynamic imaging and should lead to significant reductions in electronic components over existing systems

Keywords

biomedical equipment; computerised picture processing; computerised tomography; digital simulation; photomultipliers; radioisotope scanning and imaging; 0.9 cm; 1.7 cm; 13 cm; SPECT; body; computer simulation; design; diagnostic nuclear medicine; dynamic imaging; head; image reconstruction; photon emission tomography; position sensitive photomultipliers; resolution; single photon-emission computerized tomography; Cameras; Collimators; Computer simulation; Head; Image reconstruction; Instruments; Photomultipliers; Positron emission tomography; Radiology; Solid scintillation detectors;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.57383

Filename

57383