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Positron emission mammographic instrument: initial results
K Murthy1, M Aznar, A M Bergman
1Montreal Neurological Institute, the Royal Victoria Hospital, McGill University, Montreal, Canada.
Radiology
|February 7, 2001
Abstract:
Performance characteristics of a positron emission mammographic (PEM) instrument were studied. This dedicated metabolic breast imaging system has spatial resolution of 2.8-mm full width at half maximum (FWHM), coincidence resolving time of 12-nsec FWHM, and absolute efficiency of 3%. Hot spots with diameter of 16 mm in a phantom with signal-to-background activity ratio of 6:1 were distinguishable with a scanning time of 5 minutes.