ASIT Gamma-ray camera: a new camera head provided with an array of scintillation intensifier tubes
After a brief examination of the main physical and technological problems which determine the limits of performance of various kinds of scintillation cameras, a new gamma camera is suggested in this paper. The detection head is composed of an array of scintillation intensifier tubes (ASIT), the bialkali photocathodes of which are closely coupled to a large NaI (Tl) scintillator plate. The output phosphor (P 47) screens of the intensifiers emit blue light pulses collected by a conventional event localizer which includes an array of photomultiplier tubes and an electronic calculator. A description of the basic operation of an ASIT gamma camera indicates that the event coordinates result from a barycentric estimation of the spatial distribution of detected light photons emitted from the scintillation. A computer simulation made to estimate the performance parameters of ASIT cameras shows that high intrinsic spatial and spectral resolutions can be reached. For a particular camera head design, 2.3 mm and 11.3 KeV FWHM at 122 KeV are obtained.
- Research Organization:
- Laboratoires d'Electronique et de Physique appliquee, Limeil-Brevannes.
- OSTI ID:
- 5970045
- Journal Information:
- IEEE Trans. Nucl. Sci.; (United States), Journal Name: IEEE Trans. Nucl. Sci.; (United States) Vol. NS-32:3; ISSN IETNA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Scintillation camera and head therefor having means for improving resolution over a limited field of view
YAP multi-crystal gamma camera prototype
Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CAMERAS
CATHODES
COMPUTERIZED SIMULATION
ELECTRODES
ELECTROMAGNETIC RADIATION
GAMMA CAMERAS
GAMMA RADIATION
IMAGE INTENSIFIERS
IONIZING RADIATIONS
MEASURING INSTRUMENTS
NAI DETECTORS
PERFORMANCE
PHOSPHORS
PHOTOCATHODES
PHOTOMULTIPLIERS
PHOTOTUBES
RADIATION DETECTORS
RADIATIONS
SCINTILLATION COUNTERS
SIMULATION
SOLID SCINTILLATION DETECTORS