Image-intensifier-based volume tomographic angiography imager: preliminary results

Ruola Ning; Steven J. Rooker; John B. Barsotti; Thomas W. Morris

doi:10.1117/12.59397

1 June 1992 Image-intensifier-based volume tomographic angiography imager: preliminary results

Ruola Ning, Steven J. Rooker, John B. Barsotti, Thomas W. Morris

Proceedings Volume 1651, Medical Imaging VI: Instrumentation; (1992) https://doi.org/10.1117/12.59397
Event: Medical Imaging VI, 1992, Newport Beach, CA, United States

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.

Citation Download Citation

Ruola Ning, Steven J. Rooker, John B. Barsotti, and Thomas W. Morris "Image-intensifier-based volume tomographic angiography imager: preliminary results", Proc. SPIE 1651, Medical Imaging VI: Instrumentation, (1 June 1992); https://doi.org/10.1117/12.59397

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