title: High-resolution cardiac SPET study using fanbeam collimators in infants.
abstract: High-resolution three-headed single photon emission computed tomography (SPET) equipped with fan-beam collimators was applied to myocardial perfusion imaging in infants aged from 1 to 11 months (n = 5). A tabletop designed specifically for infants was fixed on the SPET couch to reduce the radius of camera rotation to 13.2 cm. Significant improvement in resolution was achieved with the fan-beam collimators compared to parallel-hole high-resolution collimators. With the administration of approximately 37 MBq (26-44 MBq) 201Tl, 5 min acquisition time was possible for SPET imaging, which provided good image quality in all patients. Thus, a smaller administration dose is possible within a practical short acquisition time. High-resolution fan-beam SPET imaging can be a routine diagnostic method for heart disease in newborn babies and infants.
authors.affiliation: Department of Nuclear Medicine, Kanazawa University Hospital, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Nakajima
authors.forename: J
authors.initials: J
authors.lastname: Taki
authors.forename: M
authors.initials: M
authors.lastname: Matsudaira
authors.forename: T
authors.initials: T
authors.lastname: Ichihara
authors.forename: T
authors.initials: T
authors.lastname: Ohno
authors.forename: K
authors.initials: K
authors.lastname: Hisada
mesh_terms: D005260:Female; D006321:Heart / Q000000981:diagnostic imaging*; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging*; D006801:Humans; D007223:Infant; D015899:Tomography, Emission-Computed, Single-Photon / Q000295:instrumentation*