The countrate performance of the volume imaging PENN-PET scanner
- Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Radiology
- UGM Medical Systems, Philadelphia, PA (United States)
The UGM PENN-PET Camera uses large position sensitive detectors and operates without septa. This design results in high sensitivity and 3-D imaging capability, but poses problems in high countrate situations. The maximum true countrates and random countrates have been measured, as a function of object size in the field-of-view. The countrate performance is understood in terms of the limiting process rates and event rejection in the camera. In addition, the camera is calibrated to generate absolute activity concentrations to within 5% by correcting for system deadtime with up to 3 mCi in the field of view in brain studies. This allows the performance of a variety of brain and body studies, and accurate quantitation of the data over a wide-range of imaging countrates, from [sup 18]F-FDG brain studies to [sup 15]O-water dynamic brain studies.
- OSTI ID:
- 6642962
- Journal Information:
- IEEE Transactions on Medical Imaging (Institute of Electrical and Electronics Engineers); (United States), Vol. 13:4; ISSN 0278-0062
- Country of Publication:
- United States
- Language:
- English
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