Lanthanum halide scintillators for time-of-flight 3-D pet

Karp, Joel S; Surti, Suleman

Lanthanum halide scintillators for time-of-flight 3-D pet

Patent · Tue Jun 03 04:00:00 EDT 2008

OSTI ID:983063

Karp, Joel S ^[1]; Surti, Suleman ^[2]

Glenside, PA
Philadelphia, PA

A Lanthanum Halide scintillator (for example LaCl.sub.3 and LaBr.sub.3) with fast decay time and good timing resolution, as well as high light output and good energy resolution, is used in the design of a PET scanner. The PET scanner includes a cavity for accepting a patient and a plurality of PET detector modules arranged in an approximately cylindrical configuration about the cavity. Each PET detector includes a Lanthanum Halide scintillator having a plurality of Lanthanum Halide crystals, a light guide, and a plurality of photomultiplier tubes arranged respectively peripherally around the cavity. The good timing resolution enables a time-of-flight (TOF) PET scanner to be developed that exhibits a reduction in noise propagation during image reconstruction and a gain in the signal-to-noise ratio. Such a PET scanner includes a time stamp circuit that records the time of receipt of gamma rays by respective PET detectors and provides timing data outputs that are provided to a processor that, in turn, calculates time-of-flight (TOF) of gamma rays through a patient in the cavity and uses the TOF of gamma rays in the reconstruction of images of the patient.

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Research Organization:: University of Pennsylvania (Philadelphia, PA)

Sponsoring Organization:: USDOE

DOE Contract Number:: FG02-88ER60642

Assignee:: The Trustees of The University of Pennsylvania (Philadelphia, PA)

Patent Number(s):: 7,381,958

Application Number:: 10/706,799

OSTI ID:: 983063

Country of Publication:: United States

Language:: English

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