Abstract
Scatter radiation is a large fraction of the measured projection data in Tl-201 SPECT and has significant effect on the reconstructed images. We investigated both pre- and post-filter implementations of the deconvolution scatter compensation method and several methods of estimating the scatter-to-primary ratio and scatter point response function using the attenuation map. For comparison, we also extended the dual energy window scatter compensation with a method to accurately estimate the k factor used. Both scatter compensation methods were assessed using a thorax phantom and Monte Carlo simulations. Quantitative accuracy of higher than 90% is achieved for both the prefilter implementation of the deconvolution method and the dual energy window method with an accurately determined k factor. Among the two, the deconvolution method has slightly less noise in the reconstructed image.
| Original language | English (US) |
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| Pages | 1175-1179 |
| Number of pages | 5 |
| State | Published - 1995 |
| Externally published | Yes |
| 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) |
|---|---|
| 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