Abstract
This study compared single-orbit cone-beam SPECT reconstructed image quality obtained from the Feldkamp algorithm, the Grangeat algorithm and the nonstationary filtering (NSF) algorithm which we previously developed. Acquired data from two physical phantoms, a 3D Defrise slab phantom and a 3D Hoffman brain phantom, were processed using the three algorithms and the results were compared in terms of image artifacts, noise, and processing time. From the slab phantom data, the three algorithms produced similar artifacts which were related to single-orbit cone-beam geometry. From brain phantom data, the Grangeat algorithm produced additional artifacts and distortions, while the NSF algorithm slightly reduced the cone-beam related artifacts compared to the Feldkamp algorithm. The processing time required by the Grangeat and NSF algorithms were respectively two and four times of that needed by the Feldkamp algorithm. Currently, the Feldkamp algorithm appears the best choice in terms of both image quality and processing time for single-orbit cone-beam SPECT with a cone angle less than 15°C.
| Original language | English (US) |
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| Pages | 1217-1221 |
| Number of pages | 5 |
| State | Published - 1995 |
| Event | Proceedings of the 1995 IEEE Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 3) - San Francisco, CA, USA Duration: Oct 21 1995 → Oct 28 1995 |
Other
| Other | Proceedings of the 1995 IEEE Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 3) |
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| City | San Francisco, CA, USA |
| Period | 10/21/95 → 10/28/95 |
ASJC Scopus subject areas
- Radiation
- Nuclear and High Energy Physics
- Radiology Nuclear Medicine and imaging