RT Journal Article
SR Electronic
T1 Contrast-enhanced MR Angiography: The Effects of k-Space Truncation on Luminal Representation in a Carotid Artery Phantom Model
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1028
OP 1031
VO 21
IS 6
A1 Elias R. Melhem
A1 Jean-Micheal Serfaty
A1 Lisa Jones
A1 Ryuta Itoh
A1 Brian S. Kuszyk
A1 Jean-Baptiste Martin
A1 Philippe Gailloud
A1 Kieran P.J. Murphy
A1 Daniel A. Rufenacht
YR 2000
UL http://www.ajnr.org/content/21/6/1028.abstract
AB Summary: Using carotid bifurcation phantom models with different degrees of stenoses, we evaluated the accuracy of vessel lumen representation on MR images obtained from the inverse Fourier transform of different k-space percentages. Our results show that the lower thresholds of truncated k-space sampling are dictated by the severity of luminal narrowing. The defined thresholds may help improve efficiency of 3D MR imaging of the carotid arteries while maintaining adequate luminal representation.