Title :
Pinhole SPECT reconstruction using blobs and resolution recovery
Author :
Andreyev, Andriy ; Defrise, Michel ; Vanhove, Chris
Author_Institution :
Dept. of Nucl. Medicine, Vrije Univ., Brussels, Belgium
Abstract :
In this paper, we study the performance of an iterative algorithm for pinhole SPECT, in which the correction for pinhole blurring is realized by averaging multiple projection rays. In addition, we compare the effects of regularization obtained by using blob basis functions and voxels with and without post-smoothing.
Keywords :
image reconstruction; image resolution; iterative methods; medical image processing; single photon emission computed tomography; blob basis functions; blurring correction; iterative algorithm; multiple projection rays averaging; pinhole SPECT reconstruction; regularization; resolution recovery; voxels; Apertures; Cameras; Detectors; Image quality; Image reconstruction; Image representation; Image resolution; Iterative algorithms; Signal resolution; Signal to noise ratio;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2005 IEEE
Print_ISBN :
0-7803-9221-3
DOI :
10.1109/NSSMIC.2005.1596813
