Initial results of a positron tomograph for prostate imaging
We present the status and initial images of a positrontomograph for prostate imaging that centers a patient between a pair ofexternal curved detector banks (ellipse: 45 cm minor, 70 cm major axis).The distance between detector banks adjusts to allow patient access andto position the detectors as closely as possible for maximum sensitivitywith patients of various sizes. Each bank is composed of two axial rowsof 20 CTI PET Systems HR+ block detectors for a total of 80 modules inthe camera. Compared to an ECAT HR PET system operating in 3D mode, ourcamera uses about one-quarter the number of detectors and hasapproximately the same sensitivity for a central point source, becauseour detectors are close to the patient. The individual detectors areangled in the plane to point towards the prostate to minimize resolutiondegradation in that region. The detectors are read out by modified CTIdata acquisition electronics. We have completed construction of thegantry and electronics, have developed detector calibration and dataacquisition software, and are taking coincidence data. We demonstratethat we can clearly visualize a "prostate" in a simple phantom.Reconstructed images of two phantoms are shown.
- 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; US Department ofDefense Grant DAMD17-02-1-0081, National Institutes of Health Grant R01EB00194
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 909507
- Report Number(s):
- LBNL-56611; IETNAE; R&D Project: 80TP01, 445001; TRN: US0703895
- Journal Information:
- IEEE Transactions on Nuclear Science, Vol. NS-53; Related Information: Journal Publication Date: 2006; ISSN 0018-9499
- Country of Publication:
- United States
- Language:
- English
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