Title :
A robust iterative spatial algorithm for correcting the transmission attenuation and detector response in single photon emission tomography
Author :
Amartur, S.C. ; Nelson, A.D.
Author_Institution :
Case Western Reserve Univ., Cleveland, OH, USA
Abstract :
A post-correction to compensate for tissue attenuation and spatial variation of resolution is described for single photon emission computed tomography. The iterative method described is robust in the sense of being less sensitive to noise. The method also exhibits better convergence compared to the standard iterative schemes. The method was applied on simulated phantoms corrupted with noise and on an ex-vivo dog heart scanned with a Gamma camera. The results obtained from the application of this method are illustrated
Keywords :
computerised picture processing; computerised tomography; convergence; iterative methods; noise; radioisotope scanning and imaging; Gamma camera; SPECT; convergence; detector response; ex-vivo dog heart; iterative method; noise; post-correction; resolution spatial variation; robust iterative spatial algorithm; simulated phantoms; single photon emission computed tomography; tissue attenuation; Attenuation; Computational modeling; Convergence; Heart; Imaging phantoms; Iterative algorithms; Iterative methods; Noise robustness; Single photon emission computed tomography; Spatial resolution;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Conference_Location :
New York, NY
DOI :
10.1109/ICASSP.1988.196727
