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Proceedings Paper

Image-intensifier-based volume tomographic angiography imager: preliminary results
Author(s): Ruola Ning; Steven J. Rooker; John B. Barsotti; Thomas W. Morris
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Paper Abstract

A GE 8800 CT system has been modified into a prototype of a volume tomographic angiography imager. The system consists of an x-ray tube and an image intensifier coupled to a TV camera. The source and detector can be rotated over 360 degrees. To explore the imaging performance of the system for reconstructing a three-dimensional (3-D) vascular structure, a set of nonsubtraction projections of a vascular phantom, acquired over 25 projection angles, were digitized. These data were reconstructed using an iterative algorithm specially designed for 3-D vascular structures. The results indicate that the system can offer adequate signal-to-noise ratio (SNR) for direct 3-D vascular reconstruction when only a few projections are used without subtraction procedure, assuming intra-arterial injection of contrast.

Paper Details

Date Published: 1 June 1992
PDF: 8 pages
Proc. SPIE 1651, Medical Imaging VI: Instrumentation, (1 June 1992); doi: 10.1117/12.59397
Show Author Affiliations
Ruola Ning, Univ. of Rochester Medical Ctr. (United States)
Steven J. Rooker, Univ. of Rochester Medical Ctr. (United States)
John B. Barsotti, Univ. of Rochester Medical Ctr. (United States)
Thomas W. Morris, Univ. of Rochester Medical Ctr. (United States)

Published in SPIE Proceedings Vol. 1651:
Medical Imaging VI: Instrumentation
Rodney Shaw, Editor(s)

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