A practical block detector for a depth encoding PET camera

Conference · Sun Oct 01 04:00:00 EDT 1995

OSTI ID:383078

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

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1. British Columbia Univ., Vancouver, BC (Canada). TRIUMF Facility
2. CTI, Inc., 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 in a table-top 50 cm diameter camera. To obtain the desired depth sensitivity, standard commercial detectors were modified by a simple and practical process, which 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.

• Research Organization: British Columbia Univ., Vancouver, BC (Canada). TRIUMF Facility
• Sponsoring Organization: British Columbia Univ., Vancouver, BC (Canada). TRIUMF Facility
• OSTI ID: 383078
• Report Number(s): TRI-PP--95-82; CONF-951073--23; ON: DE96013382
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
55 BIOLOGY AND MEDICINE
BASIC STUDIES
DEPTH
GAMMA RADIATION
IMAGE PROCESSING
IMAGES
NUCLEAR MEDICINE
PERFORMANCE TESTING
POSITRON CAMERAS
POSITRON COMPUTED TOMOGRAPHY
RADIATION DETECTORS
RESOLUTION