Paper Info
Title
Compensating for limited-angle effect in respiratory-gated cardiac SPECT
Abstract
In respiratory-gated cardiac SPECT with amplitude binning, the acquisition time can vary greatly both between respiratory gates and among acquisition angles within each gate. If not properly accounted for, this uneven distribution in acquired data statistics will lead to limited-angle artifacts in reconstruction, which in turn can impact on the accuracy of respiratory motion correction. We investigate a compensation scheme for this uneven distribution by directly taking into account in the imaging model the actual acquisition time at different projection angles. In the experiment, we demonstrated this approach with simulated NCAT imaging data, for which quantitative results were obtained on both the reconstructed myocardium and estimated motion; we also tested the proposed approach on a set of clinical acquisition. The results show that the proposed approach could effectively suppress the limited-angle artifacts and improve the reconstruction accuracy.
Year
DOI
Venue
2014
10.1109/ISBI.2014.6868064
ISBI
Keywords
DocType
ISSN
motion compensation,cardiology,respiratory-gated cardiac SPECT,Respiratory-gated SPECT,pneumodynamics,limited-angle artifact,motion estimation,amplitude binning,image reconstruction,myocardium,amplitude respiratory gating,single photon emission computed tomography,respiratory motion correction,simulated NCAT imaging data,muscle,acquisition time,medical image processing,limited-angle effect compensation
Conference
1945-7928
Citations 
PageRank 
References 
2
0.52
2
Authors
5
Name
Order
Citations
PageRank
Wenyuan Qi185.56
Yongyi Yang21409140.74
Miles N. Wernick359561.13
P. Hendrik Pretorius4229.04
Michael A King511527.84