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Proceedings Paper

Efficient reconstruction algorithm for CT fluoroscopy
Author(s): Jiang Hsieh
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Paper Abstract

In interventional procedures, computed tomography (CT) has demonstrated its effectiveness in guiding operators through otherwise difficult tasks. By providing near real time feedback, CT fluoroscopy (CTF) enables the operator to dynamically adjust the location and orientation of the biopsy instrument. The most important performance parameter of CTF is the system temporal response. In this paper, we present a mathematical framework that accurately characterizes the system response of a needle type instrument. Based on the model, a modified halfscan reconstruction algorithm is presented. The algorithm makes use of the redundant nature of CTF data processing and enables efficient generation of CT images. The effectiveness of the algorithm is demonstrated by theoretical analysis and phantom experiments.

Paper Details

Date Published: 3 July 2001
PDF: 8 pages
Proc. SPIE 4322, Medical Imaging 2001: Image Processing, (3 July 2001); doi: 10.1117/12.430962
Show Author Affiliations
Jiang Hsieh, GE Medical Systems (United States)

Published in SPIE Proceedings Vol. 4322:
Medical Imaging 2001: Image Processing
Milan Sonka; Kenneth M. Hanson, Editor(s)

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