TY - GEN
T1 - CORRECTING SLICE SELECTION AXIS MOTION ARTIFACTS IN MR IMAGING
AU - Hedley, Mark
AU - Yan, Hong
PY - 1992/3
Y1 - 1992/3
N2 - Patient motion during data acquisition in magnetic resonance imaging causes artifacts in the reconstructed image, which appear as blurring and ghost repetitions of the moving structures. The acquired data is related to the image by the Fourier transform. With translational motion perpendicular to the imaging plane, the magnitude of the acquired data is corrupted. This magnitude retrieval problem can almost always be solved in theory provided the field of view is larger than the image. The restrictions on the manner in which the magnitude may be corrupted result in the problem being linear. The corruption is determined using a least squares estimate, then the data is corrected. The implementation of the algorithm allows rapid correction of images.
AB - Patient motion during data acquisition in magnetic resonance imaging causes artifacts in the reconstructed image, which appear as blurring and ghost repetitions of the moving structures. The acquired data is related to the image by the Fourier transform. With translational motion perpendicular to the imaging plane, the magnitude of the acquired data is corrupted. This magnitude retrieval problem can almost always be solved in theory provided the field of view is larger than the image. The restrictions on the manner in which the magnitude may be corrupted result in the problem being linear. The corruption is determined using a least squares estimate, then the data is corrected. The implementation of the algorithm allows rapid correction of images.
UR - https://www.scopus.com/pages/publications/85019541085
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85019541085&origin=recordpage
U2 - 10.1109/ICASSP.1992.226271
DO - 10.1109/ICASSP.1992.226271
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 0-7803-0532-9
VL - 3
T3 - International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
SP - 81
EP - 84
BT - [Proceedings] ICASSP-92
PB - IEEE
T2 - 1992 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP-92)
Y2 - 23 March 1992 through 26 March 1992
ER -