Prospective navigator gating with a dual acceptance window technique to reduce respiratory motion artifacts in 3D MR coronary angiography.
A prospective navigator algorithm with a dual acceptance window (DAW) technique was developed to reduce image artifacts induced by respiratory motion without increasing imaging time. A phantom study shows that the ghost level measured by ghost-to-image ratio was reduced by 27.1 % (p < 0.005) using the DAW technique compared to the conventional single acceptance window technique. This DAW technique can also be used to reduce imaging time while maintaining comparable ghosting level.
Du
Yiping P
YP
Department of Radiology, Health Sciences Center, University of Colorado, Colorado 80262, USA. yiping.du@uchsc.edu
D000465:Algorithms; D016477:Artifacts; D003331:Coronary Vessels / Q000473:pathology*; D004562:Electrocardiography; D006801:Humans; D021621:Imaging, Three-Dimensional; D018810:Magnetic Resonance Angiography / Q000379:methods; D019047:Phantoms, Imaging; D012119:Respiration