Title :
Non-rigid summing of gated PET via optical flow
Author :
Klein, G.J. ; Reutter, B.W. ; Huesman, R.H.
Author_Institution :
Center for Functional Imaging, Lawrence Berkeley Lab., CA, USA
fDate :
8/1/1997 12:00:00 AM
Abstract :
A method for summing together datasets from gated cardiac PET acquisitions is described. Optical flow techniques are used to accurately model non-rigid motion present during the cardiac cycle so that a one-to-one mapping is found between each voxel of two gated volumes. Using this mapping, image summing can take place, producing a composite dataset with improved statistics and reduced motion-induced blur. Results using data from a gated cardiac study on a dog are presented
Keywords :
biomechanics; cardiology; image sequences; medical image processing; motion estimation; positron emission tomography; cardiac cycle; composite dataset; dog; gated PET; gated volumes; image summing; medical diagnostic imaging; motion compensation; motion-induced blur; nonrigid motion modeling; nonrigid summing; nuclear medicine; one-to-one mapping; optical flow; voxel; Heart; Image motion analysis; Image reconstruction; Isotopes; Motion estimation; Optical attenuators; Optical filters; Optical imaging; Pixel; Positron emission tomography;
Journal_Title :
Nuclear Science, IEEE Transactions on
