Efficient reconstruction algorithm for CT fluoroscopy

Jiang Hsieh

doi:10.1117/12.430962

3 July 2001 Efficient reconstruction algorithm for CT fluoroscopy

Jiang Hsieh

Proceedings Volume 4322, Medical Imaging 2001: Image Processing; (2001) https://doi.org/10.1117/12.430962
Event: Medical Imaging 2001, 2001, San Diego, CA, United States

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.

Citation Download Citation

Jiang Hsieh "Efficient reconstruction algorithm for CT fluoroscopy", Proc. SPIE 4322, Medical Imaging 2001: Image Processing, (3 July 2001); https://doi.org/10.1117/12.430962

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