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Title: Three dimensional imaging detector employing wavelength-shifting optical fibers

A novel detector element structure and method for its use is provided. In a preferred embodiment, one or more inorganic scintillating crystals are coupled through wavelength shifting optical fibers (WLSFs) to position sensitive photomultipliers (PS-PMTs). The superior detector configuration in accordance with this invention is designed for an array of applications in high spatial resolution gamma ray sensing with particular application to SPECT, PET and PVI imaging systems. The design provides better position resolution than prior art devices at a lower total cost. By employing wavelength shifting fibers (WLSFs), the sensor configuration of this invention can operate with a significant reduction in the number of photomultipliers and electronics channels, while potentially improving the resolution of the system by allowing three dimensional reconstruction of energy deposition positions. 11 figs.
Inventors:
Issue Date:
OSTI Identifier:
434170
Assignee:
Boston Univ., MA (United States) PTO; SCA: 440101; 550601; PA: INS-97:003224; EDB-97:036526; SN: 97001726602
Patent Number(s):
US 5,600,144/A/
Application Number:
PAN: 8-240,591
Contract Number:
FG02-91ER40676
Resource Relation:
Other Information: PBD: 4 Feb 1997
Research Org:
Boston University
Country of Publication:
United States
Language:
English
Subject:
44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; 55 BIOLOGY AND MEDICINE, BASIC STUDIES; SOLID SCINTILLATION DETECTORS; GAMMA DETECTION; EMISSION COMPUTED TOMOGRAPHY; INORGANIC PHOSPHORS; OPTICAL FIBERS; DESIGN; PHOTOMULTIPLIERS