Event localization in a continuous scintillation detector using digital processing
The authors are currently developing a positron emission tomograph with multislice capability based on a single-slice prototype recently completed. For this tomograph they had to develop a two-dimensionally position-sensitive detector with several features not commonly found in similar detectors. The new multislice tomograph will consist of six detectors arranged in a hexagon. Each 2-D detector uses a NaI(T1) scintillator with a detector area of 110 x 470 mm and a thickness of 25 mm. The light emitted by the crystal is detected by an array of 30 square photomultipliers (50 x 50 mm) and the signals from the photomultipliers (PMT) are digitized as described below. Digitizing each photomultiplier signal provides greater processing flexibility for accurate determination of the location of an interaction within the crystal.
- Research Organization:
- Hospital of the Univ. of Pennsylvania, Dept. of Radiology, 3400 Spruce Street, Philadelphia, PA 19104
- OSTI ID:
- 5886541
- Report Number(s):
- CONF-851009-
- Journal Information:
- IEEE Trans. Nucl. Sci.; (United States), Vol. NS-33:1; Conference: IEEE nuclear science symposium, San Francisco, CA, USA, 23 Oct 1985
- Country of Publication:
- United States
- Language:
- English
Similar Records
Initial characterization of a prototype multi-crystal cylindrical spect system
Positron ring system using Anger-type detectors: Progress report for period ending December 31, 1987
Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
NAI DETECTORS
DESIGN
OPERATION
POSITRON COMPUTED TOMOGRAPHY
ACCURACY
CRYSTALS
DATA PROCESSING
PHOTOMULTIPLIERS
POSITION SENSITIVE DETECTORS
SIGNALS
THICKNESS
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
DIMENSIONS
EMISSION COMPUTED TOMOGRAPHY
MEASURING INSTRUMENTS
PHOTOTUBES
PROCESSING
RADIATION DETECTORS
SCINTILLATION COUNTERS
SOLID SCINTILLATION DETECTORS
TOMOGRAPHY
550602* - Medicine- External Radiation in Diagnostics- (1980-)
440101 - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments