Highresolution cardiac SPET study using fanbeam collimators in infants

Highresolution threeheaded single photon emission computed tomography SPET equipped with fanbeam collimators was applied to myocardial perfusion imaging in infants aged from 1 to 11 months n5. 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 fanbeam collimators compared to parallelhole highresolution collimators. With the administration of approximately 37 MBq 2644 MBq 201T1, 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, Highresolution fanbeam SPET imaging can be a routine diagnostic method for heart disease in newborn babies and infants.