High pressure xenon electronically collimated camera for low energy gamma ray imaging

Author

Bolozdynya, Alexander I. ; Egorov, Valery V. ; Koutchenkov, Alexei V. ; Safronov, Gennady A. ; Smirnov, Gennady N. ; Medved, Sergei A. ; Morgunov, Vasiliy L.

Author_Institution

Dept. of Med. Phys., Rush-Presbyterian-St. Luke´´s Med. Center, Chicago, IL, USA

Volume

44

Issue

6

fYear

1997

fDate

12/1/1997 12:00:00 AM

Firstpage

2408

Lastpage

2414

Abstract

A high pressure xenon scintillation drift chamber with 30 cm diameter field of view has been built and tested as a two-dimensional imaging camera for low energy γ-rays. Experiments demonstrate that the camera can be also operated in an electronically collimated mode as a three-dimensional imaging Compton camera. A spatial resolution of 25 mm is measured for a 140 keV point-like source placed 10.5 cm in front of the camera without any collimator. The resolution is limited by the intrinsic resolution of the 19 channel readout system which is based on 80 mm diameter phototubes. A way to improve the imaging performance is discussed

Keywords

Compton effect; biomedical equipment; cameras; drift chambers; gamma-ray detection; gas scintillation detectors; image resolution; photomultipliers; single photon emission computed tomography; 140 keV; 19 channel readout system; 30 cm; 80 mm; Xe; field of; high pressure xenon electronically collimated camera; intrinsic resolution; low energy γ-rays; low energy gamma ray imaging; phototubes; point-like source; scintillation drift chamber; spatial resolution; three-dimensional imaging Compton camera; two-dimensional imaging camera; Cameras; Collimators; Detectors; Electromagnetic scattering; High-resolution imaging; Nuclear imaging; Particle scattering; Physics; Spatial resolution; Xenon;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.656444

Filename

656444