American Journal of Neuroradiology, Vol 13, Issue 5 1423-1428, Copyright © 1992 by American Society of Neuroradiology
ARTICLES |
MR angiography of the extracranial carotid arteries using a two-slab oblique 3-D acquisition
W Li, J Kramer, J Kleefield and RR Edelman
Department of Radiology, Beth Israel Hospital, Boston, MA 02215.
PURPOSE: To describe an oblique, two-slab 3-D acquisition technique for MR angiography of the extracranial carotid arteries, an approach chosen to minimize saturation effects when the body coil is used as transmitter, as is often the situation when a dedicated neck coil is used as receiver. SUBJECTS: Five healthy subjects and 17 patients in whom carotid artery disease was suspected underwent MR angiography using the above technique. RESULTS: Flow contrast was much better than in direct sagittal acquisition. Comparisons between multislab transverse 3-D acquisition and the oblique approach showed that a greater length of the carotid arteries was depicted and scan time was less for oblique acquisitions. CONCLUSIONS: Use of oblique imaging is a simple and effective solution to the problem of coil-related saturation effects.
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