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Author Koral, K. F. ♦ Nolder, C. ♦ Rogers, W. L. ♦ Keyes, J. W. (Jr.)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword RADIOLOGY AND NUCLEAR MEDICINE ♦ EMISSION COMPUTED TOMOGRAPHY ♦ COMPUTERIZED SIMULATION ♦ HEART ♦ IRRADIATION DEVICES ♦ EVALUATION ♦ ALGORITHMS ♦ COLLIMATORS ♦ PHANTOMS ♦ SPATIAL RESOLUTION ♦ BODY ♦ CARDIOVASCULAR SYSTEM ♦ COMPUTERIZED TOMOGRAPHY ♦ DIAGNOSTIC TECHNIQUES ♦ MATHEMATICAL LOGIC ♦ MOCKUP ♦ ORGANS ♦ RESOLUTION ♦ SIMULATION ♦ STRUCTURAL MODELS ♦ TOMOGRAPHY ♦ Medicine- Unsealed Radionuclides in Diagnostics
Abstract Limited-angular-range tomography leads to an elongating distortion of the object in the direction of the z axis (perpendicular to the camera face). Two-view tomography appends to the usual data set another set of projections taken after the camera is rotated 90/sup 0/ about an axis perpendicular to z. The authors investigated two-view tomography using a rotating-slant-hole collimator, 12 projection per view and the SMART iterative algorithm. Computer simulations extended previous results to include noise and attenuation. Phantoms imaged were the Au-rings in air and a ventricle phantom angled with respect to the z axis and placed in a water bath. Two-view results were generally superior compared to one-view results, were subject to some artifact in imaging defects but could detect defects by looking at the differences between two sets of images, and were fairly insensitive to ventricle angulation. Therefore, two-view tomography has promise for thallium-type imaging.
Educational Use Research
Learning Resource Type Article
Publisher Date 1984-03-01
Publisher Place United States
Journal J. Nucl. Med.
Volume Number 25
Issue Number 3
Organization Univ. of Michigan Medical Center, Ann Arbor


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