Abstract
Motion artifacts can be a significant factor that limits the image quality in high-resolution PET. Surveillance systems have been developed to track the movements of the subject during a scan. Development of reconstruction algorithms that are able to compensate for the subject motion will increase the potential of PET. In this paper we present a list mode likelihood reconstruction algorithm with the ability of motion compensation. The subject motion is explicitly modeled in the likelihood function. The detections of each detector pair are modeled as a Poisson process with time-varying rate function. The proposed method has several advantages over the existing methods. It uses all detected events and does not introduce any interpolation error. Computer simulations show that the proposed method can compensate simulated subject movements and that the reconstructed images have no visible motion artifacts.
Original language | English (US) |
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Title of host publication | Proceedings - International Symposium on Biomedical Imaging |
Publisher | IEEE Computer Society |
Pages | 413-416 |
Number of pages | 4 |
Volume | 2002-January |
ISBN (Print) | 078037584X |
DOIs | |
State | Published - 2002 |
Externally published | Yes |
Event | IEEE International Symposium on Biomedical Imaging, ISBI 2002 - Washington, United States Duration: Jul 7 2002 → Jul 10 2002 |
Other
Other | IEEE International Symposium on Biomedical Imaging, ISBI 2002 |
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Country/Territory | United States |
City | Washington |
Period | 7/7/02 → 7/10/02 |
ASJC Scopus subject areas
- Biomedical Engineering
- Radiology Nuclear Medicine and imaging