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Proceedings Paper

Flat panel detector-based cone beam CT for dynamic imaging: system evaluation
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Paper Abstract

The purpose of this study is to characterize a newly built flat panel detector (FPD)-based cone beam CT (CBCT) prototype for dynamic imaging. A CBCT prototype has been designed and constructed by completely modifying a GE HiSpeed Advantage (HSA) CT gantry, incorporating a newly acquired large size real-time FPD (Varian PaxScan 4030CB), a new x-ray generator and a dual focal spot angiography x-ray tube that allows the full coverage of the detector. During data acquisition, the x-ray tube and the FPD can be rotated on the gantry over Nx360 degrees due to integrated slip ring technology with the rotation speed of one second/revolution. With a single scan time of up to 40 seconds , multiple sets of reconstructions can be performed for dynamic studies. The upgrade of this system has been completed. The prototype was used for a series of preliminary phantom studies: different sizes of breast phantoms, a Humanoid chest phantom and scatter correction studies. The results of the phantom studies demonstrate that good image quality can be achieved with this newly built prototype.

Paper Details

Date Published: 2 March 2006
PDF: 7 pages
Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 61422C (2 March 2006); doi: 10.1117/12.655717
Show Author Affiliations
Ruola Ning, Univ. of Rochester (United States)
David Conover, Univ. of Rochester (United States)
Yong Yu, Univ. of Rochester (United States)
Yan Zhang, Univ. of Rochester (United States)
Weixing Cai, Univ. of Rochester (United States)
Dong Yang, Univ. of Rochester (United States)
Xianghua Lu, Univ. of Rochester (United States)

Published in SPIE Proceedings Vol. 6142:
Medical Imaging 2006: Physics of Medical Imaging
Michael J. Flynn; Jiang Hsieh, Editor(s)

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