Title :
Accounting for the hysteresis of respiratory motion of the heart in cardiac SPECT and PET using the Bouc-Wen model of hysteresis
Author :
Dasari, Paul ; Konik, Arda ; Shazeeb, Mohammed S. ; King, M.A.
Author_Institution :
Med. Sch., Dept. of Radiol., Univ. of Massachusetts, Worcester, MA, USA
fDate :
Oct. 27 2012-Nov. 3 2012
Abstract :
Respiratory motion causes artifacts and blurring of cardiac structures in reconstructed slices in SPECT and PET studies. Respiratory motion correction methods based on amplitude binning of list-mode data have been observed to reduce but not eliminate the residual blurring when hysteresis of cardiac motion is present. The Bouc-Wen model of hysteresis is able to describe non-linear hysteretic systems and match the behavior of a hysteretic system to a range of hysteretic cycles. Our hypothesis is that the impact of hysteresis on the respiratory motion of heart can be accounted by developing hysteresis model employing modified Bouc-Wen equation. This study describes our investigation of our hypothesis through combined use of MRI and Visual Tracking System (VTS).
Keywords :
biomedical MRI; cardiology; hysteresis; image denoising; image reconstruction; medical image processing; motion compensation; object tracking; pneumodynamics; positron emission tomography; single photon emission computed tomography; Bouc-Wen model; MRI; PET; VTS; amplitude binning; cardiac SPECT; cardiac motion hysteresis; cardiac structure blurring; heart respiratory motion hysteresis; hysteretic cycle; list-mode data; modified Bouc-Wen equation; motion artifacts; nonlinear hysteretic system; residual blurring; respiratory motion correction method; slice reconstruction; visual tracking system;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4673-2028-3
DOI :
10.1109/NSSMIC.2012.6551692
