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PubMed · 2341898

Continuous-slice PENN-PET: a positron tomograph with volume imaging capability.

J S Karp·G Muehllehner·D A MankofF·C E Ordonez·J M Ollinger·M E Daube-Witherspoon·A T Haigh·D J Beerbohm
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Abstract

The PENN-PET scanner consists of six hexagonally arranged position-sensitive Nal(TI) detectors. This design offers high spatial resolution in all three dimensions, high sampling density along all three axes without scanner motion, a large axial acceptance angle, good energy resolution, and good timing resolution. This results in three-dimensional imaging capability with high sensitivity and low scatter and random backgrounds. The spatial resolution is 5.5 mm (FWHM) in all directions near the center. The true sensitivity, for a brain-sized object, is a maximum of 85 kcps/microCi/ml and the scatter fraction is a minimum of 10%, both depending on the lower level energy threshold. The scanner can handle up to 5 mCi in the field of view, at which point the randoms equal the true coincidences and the detectors reach their count rate limit. We have so far acquired [18F]FDG brain studies and cardiac studies, which show the applicability of our scanner for both brain and whole-body imaging. With the results to date, we feel that this design results in a simple yet high performance scanner which is applicable to many types of static and dynamic clinical studies.

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Equipment DesignEvaluation Studies as TopicTomography, Emission-ComputedJournal ArticleResearch Support, U.S. Gov't, Non-P.H.S.Research Support, U.S. Gov't, P.H.S.

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J S Karp, G Muehllehner, D A MankofF, C E Ordonez, J M Ollinger, M E Daube-Witherspoon, A T Haigh, D J Beerbohm. 1990. Continuous-slice PENN-PET: a positron tomograph with volume imaging capability.. https://pubmed.ncbi.nlm.nih.gov/2341898/

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