title: High-Resolution Anamorphic SPECT Imaging.
abstract: We have developed a gamma-ray imaging system that combines a high-resolution silicon detector with two sets of movable, half-keel-edged copper-tungsten blades configured as crossed slits. These apertures can be positioned independently between the object and detector, producing an anamorphic image in which the axial and transaxial magnifications are not constrained to be equal. The detector is a 60 mm × 60 mm, one-millimeter-thick, one-megapixel silicon double-sided strip detector with a strip pitch of 59μm. The flexible nature of this system allows the application of adaptive imaging techniques. We present system details; calibration, acquisition, and reconstruction methods; and imaging results.
authors.affiliation: Department of Medical Imaging, Center for Gamma-Ray Imaging, University of Arizona, Tucson, AZ 85724 USA, and the College of Optical Sciences, University of Arizona, Tucson, AZ 85721 USA.
authors.forename: Heather L
authors.initials: HL
authors.lastname: Durko
authors.affiliation: Department of Medical Imaging, Center for Gamma-Ray Imaging, University of Arizona, Tucson, AZ 85724 USA, and the College of Optical Sciences, University of Arizona, Tucson, AZ 85721 USA.
authors.forename: Harrison H
authors.initials: HH
authors.lastname: Barrett
authors.affiliation: Department of Medical Imaging, Center for Gamma-Ray Imaging, University of Arizona, Tucson, AZ 85724 USA, and the College of Optical Sciences, University of Arizona, Tucson, AZ 85721 USA.
authors.forename: Lars R
authors.initials: LR
authors.lastname: Furenlid
keywords: 103Pd; 125I; Adaptive; DSSD; SPECT; anamorphic imaging; crossed slits; double-sided strip detector; low energy; silicon; small animal