A Method for Attenuation Correction in Radionuclide Computed Tomography
- 1 January 1978
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 25 (1) , 638-643
- https://doi.org/10.1109/tns.1978.4329385
Abstract
The development of algorithms for Radionuclide Computed Tomography (RCT) is complicated by the presence of attenuation of gamma-rays inside the body. Some of the existing RCT reconstruction algorithms apply approximation formulas to the projection data for attenuation correction, while others take attenuation into account through some iterative procedures. The drawbacks of these algorithms are that the approximation formulas commonly used are generally inadequate and the iterative procedures are usually very time-consuming. The method for attenuation correction in RCT, which we propose, applied a simple, effective two-step procedure to the uncorrected image. In this procedure the filtered back-projection algorithm is used for its fast speed. A simple mathematical basis and description of the procedure together with some illustrative computer results are given in this paper.Keywords
This publication has 3 references indexed in Scilit:
- On Methods of Three-Dimensional Reconstruction from a Set of Radioisotope ScintigramsIEEE Transactions on Systems, Man, and Cybernetics, 1976
- A practical approach to transverse-section gamma-ray imagingThe British Journal of Radiology, 1976
- Three-dimensional reconstruction in nuclear medicine emission imagingIEEE Transactions on Nuclear Science, 1974