Design of a variable field prototype PET camera

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.507246· OSTI ID:276519

Wong, W H; Uribe, J; Lu, W; Hu, G; Hicks, K ^[1]

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1. Univ. of Texas, Houston, TX (United States). MD Anderson Cancer Center

A prototype PET camera has been designed and is being constructed to test the concept, and develop the engineering design and production methodology for a variable field PET camera. The long term goal of the design is to develop a lower cost, high resolution PET camera. The camera has eight detector heads which form a closely packed octagon detector ring with an average diameter of 44cm for brain/breast and animal model imaging. The heads can be translated radially to a maximum ring diameter of 70cm for whole body imaging. In the larger diameter modes, the camera rotates 45{degree} during imaging. The camera heads can be set to intermediate positions to fit the camera to the subject size to maximize detection sensitivity and sampling uniformity. Special design features for imaging the breast and the axillary metastases have been incorporated. The detector design implemented is the quadrant sharing photomultiplier (PMT) design using circular 19mm PMT. The BGO detector pitch size is 2.7 x 2.7mm. The prototype camera images 27 slices simultaneously with an axial field of view (FOV) of 39mm. The prototype`s limited axial FOV, which is appropriate for testing the camera concept, would be expanded in a next-generation clinical camera implementation. Preliminary simulation studies have been performed to evaluate the resolution, sensitivity, and sampling uniformity.

• OSTI ID: 276519
• Report Number(s): CONF-951073--
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 3Pt2 Vol. 43; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
55 BIOLOGY AND MEDICINE
BASIC STUDIES
BGO DETECTORS
COMPUTERIZED SIMULATION
DESIGN
PHOTOMULTIPLIERS
POSITRON CAMERAS
POSITRON COMPUTED TOMOGRAPHY