Characterization of a PET Camera Optimized for ProstateImaging
We present the characterization of a positron emission tomograph for prostate imaging that centers a patient between a pair of external curved detector banks (ellipse: 45 cm minor, 70 cm major axis). The distance between detector banks adjusts to allow patient access and to position the detectors as closely as possible for maximum sensitivity with patients of various sizes. Each bank is composed of two axial rows of 20 HR+ block detectors for a total of 80 detectors in the camera. The individual detectors are angled in the transaxial plane to point towards the prostate to reduce resolution degradation in that region. The detectors are read out by modified HRRT data acquisition electronics. Compared to a standard whole-body PET camera, our dedicated-prostate camera has the same sensitivity and resolution, less background (less randoms and lower scatter fraction) and a lower cost. We have completed construction of the camera. Characterization data and reconstructed images of several phantoms are shown. Sensitivity of a point source in the center is 946 cps/mu Ci. Spatial resolution is 4 mm FWHM in the central region.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of Biological andEnvironmental Research. Medical Science Division; Department of DefenseDAMD17-02-1-0081, National Institute for Biomedical Imaging andBioengineering Grants R01-EB-00194 and R01-HL-071253
- DOE Contract Number:
- DE-AC02-05CH11231; NIHR01-EB-00194 ANDR01-HL-071253
- OSTI ID:
- 883791
- Report Number(s):
- LBNL-59115; R&D Project: 445001; BnR: KP1401030; TRN: US0603570
- Resource Relation:
- Conference: IEEE Nuclear Science Symposium and MedicalImaging Conference, San Juan, Puerto Rico, October 22-29,2005
- Country of Publication:
- United States
- Language:
- English
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