Abstract
We investigated the impact on the uniformity of the polar map of the maximum wall count, and cardiac wall thickness of several methods used to compensate for distance dependent resolution (DDR) in cardiac perfusion imaging. Comparison was made of: 1) filtered backprojection (FBP) reconstruction with no correction for attenuation and DDR; 2) FBP with Bellini attenuation compensation (AC); 3) FBP with Bellini AC and frequency distance relationship (FDR) restoration filtering prior to reconstruction; 4) ordered-subset maximum likelihood estimation-maximization (OSEM) reconstruction with just AC; and 5) including DDR compensation and AC in OSEM reconstruction with 3D post-reconstruction Gaussian filtering. This investigation shows that compensation for DDR results in a trade-off between uniformity of maximal wall counts and noise control versus average normalized wall thickness. Thus observer detection studies are needed to determine if compensation for DDR does result in improved lesion detection.
| Original language | English (US) |
|---|---|
| Pages | 978-982 |
| Number of pages | 5 |
| State | Published - 1997 |
| Externally published | Yes |
| Event | Proceedings of the 1997 IEEE Nuclear Science Symposium - Albuquerque, NM, USA Duration: Nov 9 1997 → Nov 15 1997 |
Other
| Other | Proceedings of the 1997 IEEE Nuclear Science Symposium |
|---|---|
| City | Albuquerque, NM, USA |
| Period | 11/9/97 → 11/15/97 |
ASJC Scopus subject areas
- Radiation
- Nuclear and High Energy Physics
- Radiology Nuclear Medicine and imaging