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

fYear

1989

Firstpage

485

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IEMBS.1989.95834

Filename

95834