title: Positron emission mammographic instrument: initial results.
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.
authors.affiliation: Montreal Neurological Institute, the Royal Victoria Hospital, McGill University, Montreal, Canada.
authors.forename: K
authors.initials: K
authors.lastname: Murthy
authors.forename: M
authors.initials: M
authors.lastname: Aznar
authors.forename: A M
authors.initials: AM
authors.lastname: Bergman
authors.forename: C J
authors.initials: CJ
authors.lastname: Thompson
authors.forename: J L
authors.initials: JL
authors.lastname: Robar
authors.forename: R
authors.initials: R
authors.lastname: Lisbona
authors.forename: A
authors.initials: A
authors.lastname: Loutfi
authors.forename: J H
authors.initials: JH
authors.lastname: Gagnon
mesh_terms: 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
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18