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Recessed elliptical‐centric view‐ordering for contrast‐enhanced 3D MR angiography of the carotid arteries
Author(s) -
Watts R.,
Wang Y.,
Redd B.,
Winchester P.A.,
Kent K.C.,
Bush H.L.,
Prince M.R.
Publication year - 2002
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.10235
Subject(s) - carotid arteries , bolus (digestion) , angiography , contrast (vision) , signal (programming language) , computer science , medicine , radiology , computer vision , cardiology , surgery , programming language
Fast arterial‐venous transit in the carotid arteries requires accurate, reliable timing of the acquisition to the bolus transit to maximize arterial signal and minimize venous artifacts. The rising edge of the bolus is not utilized in conventional elliptical‐centric view‐ordering because the critical k ‐space center must be acquired with full arterial enhancement. In this study, a recessed elliptical‐centric view‐ordering scheme is introduced in which the k ‐space center is acquired a few seconds following scan initiation. The recessed view‐ordering is shown to be more robust to timing errors than the conventional scheme in a study of 37 patients. Magn Reson Med 48:419–424, 2002. © 2002 Wiley‐Liss, Inc.