Title :
Reduction of motion artifacts in computed tomography
Author :
Crawford, Carl R. ; Godwin, J.David ; Pelc, Norbert J.
Author_Institution :
GE Med. Syst., Milwaukee, WI, USA
Abstract :
The authors report on an analysis of motion artifacts by retrospectively reconstructing partial scan images, scanning moving phantoms, and using computer simulations of the scanner and moving object. The partial scan reconstructions eliminated some artifacts. Phantom and computer simulations substantially reproduced the clinical artifacts and provided insight into the relationships between motion, artifacts and scanner parameters. It is concluded that motion artifacts can be reduced by short scan times combined with gantry synchronization to align the X-ray beam along the axis of any residual motion
Keywords :
computerised tomography; X-ray beam alignment; clinical artifacts; computed tomography; computer simulations; gantry synchronization; medical diagnostic imaging; motion artifacts reduction; moving phantoms; partial scan images reconstruction; retrospective reconstruction; Computational modeling; Computed tomography; Computer simulation; Degradation; Frequency synchronization; Heart; Image reconstruction; Imaging phantoms; Lungs; X-ray imaging;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95834
