Abstract
A method to reduce the truncation artifacts in the fan beam transmission image reconstruction of a simultaneous transmission and emission SPECT system is described. Parallel hole collimation is adopted for the measurement of both emission photopeak and Compton scatter photons, which are also used to obtain the body and lung outlines. The lung outlines can be refined using attenuation coefficient (μ) estimates from within the fully sampled region (FSR) of the attenuation map computed using the truncated transmission data. It is demonstrated that this method can significantly reduce the truncation artifact using two phantom studies. When some portion of the heart falls outside FSR, the attenuation map estimated from this method can more effectively correct from the attenuation in the emission data than the truncated map.
| Original language | English (US) |
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| Pages | 1563-1567 |
| Number of pages | 5 |
| State | Published - 1995 |
| Externally published | Yes |
| Event | Proceedings of the 1994 Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 4) - Norfolk, VA, USA Duration: Oct 30 1994 → Nov 5 1994 |
Other
| Other | Proceedings of the 1994 Nuclear Science Symposium and Medical Imaging Conference. Part 1 (of 4) |
|---|---|
| City | Norfolk, VA, USA |
| Period | 10/30/94 → 11/5/94 |
ASJC Scopus subject areas
- Radiation
- Nuclear and High Energy Physics
- Radiology Nuclear Medicine and imaging