title: Effect of increased axial field of view on the performance of a volume PET scanner.
abstract: The performance of the PENN-PET 240H scanner from UGM Medical Systems is tested and compared to the prototype PENN-PET scanner built at the University of Pennsylvania. The UGM PENN-PET scanner consists of six continuous position-sensitive NaI(Tl) detectors, which results in a 50 cm transverse field-of-view and a 12.8 cm axial field-of-view. The fine spatial sampling in the axial direction allows the data to be sorted into as many as 64 transverse planes, each 2 mm thick. A large axial acceptance angle, without interplane septa, results in a high-sensitivity and low-randoms fraction, with a low-scatter fraction due to the use of a narrow photopeak energy window. This work emphasizes those performance measurements that illustrate the special characteristics of a volume imaging scanner and how they change as the axial length is increased.
authors.affiliation: Dept. of Radiol., Pennsylvania Univ., Philadelphia, PA.
authors.forename: J S
authors.initials: JS
authors.lastname: Karp
authors.forename: P E
authors.initials: PE
authors.lastname: Kinahan
authors.forename: G
authors.initials: G
authors.lastname: Muehllehner
authors.forename: P
authors.initials: P
authors.lastname: Countryman