Engineering Developments on the UBC-TRIUMF Modified PETT VI Positron Emission Tomograph

Author

Evans, B. ; Harrop, R. ; Heywood, D. ; Mackintosh, J. ; Moore, R.W. ; Pate, B.D. ; Rogers, J.G. ; Ruth, T.J. ; Sayre, C. ; Sprenger, H. ; Van Oers, N. ; Guang, Yao Xiao

Author_Institution

TRIUMF, University of British Columbia, Vancouver, B.C., V6T 2A3, Canada

Volume

30

Issue

1

fYear

1983

Firstpage

707

Lastpage

710

Abstract

A tomograph with the PETT VI geometry has been built with improvements generally applicable to such devices. In addition to improved temperature control, the gantry features commercial CsF detectors with the newer Amperex photomultiplier tubes (PMT\´s). Much of the coincidence support circuitry is of an original design, utilizing new "fast" TTL family devices. A local DEC 11/23 microprocessor provides for routine diagnostic and reliability checking, gantry control, and acquisition of single detector counting rates. Image reconstruction and display is performed by a medium size VAX 11/780 computer, operating in a time-sharing environment. Some preliminary performance characteristics of the machine have been measured. The reconstructed resolution in-slice, as well as the reconstructed slice thickness, has been measured as a function of radius for both "straight" and "cross" slices.

Keywords

Circuits; Computer displays; Computer vision; Detectors; Geometry; Image reconstruction; Photomultipliers; Radioactive decay; Temperature control; Time sharing computer systems;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.1983.4332361

Filename

4332361