Image Intensifier-Based CT Volume Imager For Angiography

Ruola Ning; Hui Hu; Robert A. Kruger

doi:10.1117/12.968642

27 June 1988 Image Intensifier-Based CT Volume Imager For Angiography

Ruola Ning, Hui Hu, Robert A. Kruger

Proceedings Volume 0914, Medical Imaging II; (1988) https://doi.org/10.1117/12.968642
Event: Medical Imaging II, 1988, Newport Beach, CA, United States

Abstract

A prototype volume CT system for use in angiography has been constructed and tested initially using a simple phantom. This system consists of a fixed x-ray tube, an image intensifier, coupled to a solid state camera, and a computer-controlled turntable on which phantoms were placed. In order to explore the imaging performance of this system, subtraction projection images, acquired over a few projection angles (20), were digitized and used for single slice reconstruction. These data then were reconstructed using two iterative reconstruction algorithms, specifically designed for vascular structures. The quality of the resultant reconstructed images agrees with the results of previous computer simulation studies and indicates that the performance of our algorithms is superior to standard filtered-backprojection. The results also suggest that an image intensifier-based detector can be used for reconstructing 3-D vascular structures from a limited number of subtraction projections.

Citation Download Citation

Ruola Ning, Hui Hu, and Robert A. Kruger "Image Intensifier-Based CT Volume Imager For Angiography", Proc. SPIE 0914, Medical Imaging II, (27 June 1988); https://doi.org/10.1117/12.968642

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