Positron emission mammographic instrument: initial results.
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.
Murthy
K
K
Montreal Neurological Institute, the Royal Victoria Hospital, McGill University, Montreal, Canada.
Aznar
M
M
Bergman
A M
AM
Thompson
C J
CJ
Robar
J L
JL
Lisbona
R
R
Loutfi
A
A
Gagnon
J H
JH
D000328:Adult; D000368:Aged; D000465:Algorithms; D001940:Breast / Q000000981:diagnostic imaging*; D001943:Breast Neoplasms / Q000000981:diagnostic imaging; D004526:Efficiency; D004867:Equipment Design; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation / Q000379:methods; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation / Q000379:methods; D008327:Mammography / Q000379:methods; D008875:Middle Aged; D019047:Phantoms, Imaging; D011856:Radiographic Image Enhancement; D019275:Radiopharmaceuticals; D012984:Software; D013997:Time Factors; D014055:Tomography, Emission-Computed / Q000295:instrumentation* / Q000379:methods
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18