A practical block detector for a depth-encoding PET camera

Journal Article · Sun Dec 01 04:00:00 EST 1996 · IEEE Transactions on Nuclear Science

DOI:https://doi.org/10.1109/23.552726· OSTI ID:458231

Rogers, J G; Moisan, C; Hoskinson, E M ^[1]; Andreaco, M S; Williams, C W; Nutt, R ^[2]

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1. TRIUMF, Vancouver, British Columbia (Canada)
2. CTI PET Systems, Knoxville, TN (United States)

The depth-of-interaction effect in block detectors degrades the image resolution in commercial PET cameras and impedes the natural evolution of smaller, less expensive cameras. A method for correcting the measured position of each detected gamma ray by measuring its depth-of-interaction was tested and found to recover 38% of the lost resolution at 7.5 cm radius in a tabletop, 50-cm-diameter camera. To obtain the desired depth sensitivity, standard commercial detectors were modified by a simple and practical process that is suitable for mass production of the detectors. The impact of the detector modifications on central image resolution and on the ability of the camera to correct for object scatter were also measured.

• OSTI ID: 458231
• Report Number(s): CONF-951073--
• Journal Information: IEEE Transactions on Nuclear Science, Journal Name: IEEE Transactions on Nuclear Science Journal Issue: 6Pt2 Vol. 43; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

55 BIOLOGY AND MEDICINE
BASIC STUDIES
IMAGE PROCESSING
OPTIMIZATION
POSITRON CAMERAS
POSITRON COMPUTED TOMOGRAPHY
RADIATION DETECTORS