DocumentCode :
3332341
Title :
A hybrid rotation-translation (HRT) scan scheme for in vivo animal SPECT imaging on a stationary scanner
Author :
Xia, Yan ; Ma, Tianyu ; Deng, Xiao ; Liu, Yaqiang ; Jin, Yongjie ; Murali, Srividya ; Yao, Rutao
Author_Institution :
Dept. of Eng. Phys., Tsinghua Univ., Beijing, China
fYear :
2009
fDate :
Oct. 24 2009-Nov. 1 2009
Firstpage :
2686
Lastpage :
2689
Abstract :
We developed SPECT imaging capability on an animal PET scanner by placing a slit-slat collimator inside the PET detector gantry. To perform in vivo animal imaging with minimal gravity induced animal motion, we investigated the performance of hybrid rotation-translation (HRT) tomographic scan scheme in this paper. Three evaluation indices, i.e. sampling completeness (SC), sensitivity, and directional spatial resolution (DR), were designed and calculated throughout the field-of-view to assess the performance of the HRT and the conventional rotation-only scan scheme. The reconstructed image quality was evaluated through simulated and experimental studies. Ten HRT schemes with different rotation and translation combinations and the conventional rotation-only scheme were tested. General HRT schemes (containing both rotational and translational movements) have comparable sampling completeness (SC), comparable sensitivity and better spatial resolution (in terms of both DR and visual image quality), as compared to the conventional rotation-only scheme We concluded that HRT scan scheme enables in vivo animal SPECT imaging on the stationary scanner and has the advantage of improving image resolution.
Keywords :
collimators; image reconstruction; image resolution; medical image processing; single photon emission computed tomography; directional spatial resolution; field-of-view; hybrid rotation-translation tomographic scan scheme; image resolution; in vivo animal SPECT imaging; reconstructed image quality; rotational movement; sampling completeness; sensitivity; slit-slat collimator; translational movement; Animals; Collimators; Detectors; Gravity; Image quality; Image reconstruction; Image sampling; In vivo; Positron emission tomography; Spatial resolution;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
ISSN :
1095-7863
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
Type :
conf
DOI :
10.1109/NSSMIC.2009.5401986
Filename :
5401986
Link To Document :
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