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Proceedings Paper

Orthogonal-rotating tetrahedral scanning for cone-beam CT
Author(s): Ivan B. Ye; Ge Wang
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Paper Abstract

In this article, a cone-beam CT scanning mode is designed assuming four x-ray sources and a spherical sample. The x-ray sources are mounted at the vertices of a regular tetrahedron. On the circumsphere of the tetrahedron, four detection panels are mounted opposite to each vertex. To avoid x-ray interference, the largest half angle of each x-ray cone beam is 27°22', while the radius of the largest ball fully covered by all the cone beams is 0.460, when the radius of the circumsphere is 1. Several scanning schemes are proposed which consist of two rotations about orthogonal axes, such that each quarter turn provides sufficient data for theoretically exact and stable reconstruction. This design can be used in biomedical or industrial settings, such as when a sequence of reconstructions of an object is desired. Similar scanning schemes based on other regular or irregular polyhedra and various rotation speeds are also discussed.

Paper Details

Date Published: 17 October 2012
PDF: 11 pages
Proc. SPIE 8506, Developments in X-Ray Tomography VIII, 850611 (17 October 2012); doi: 10.1117/12.929179
Show Author Affiliations
Ivan B. Ye, Virginia Polytechnic Institute and State Univ. (United States)
Iowa City West High School (United States)
Ge Wang, Virginia Polytechnic Institute and State Univ. (United States)

Published in SPIE Proceedings Vol. 8506:
Developments in X-Ray Tomography VIII
Stuart R. Stock, Editor(s)

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