RT Journal Article
SR Electronic
T1 MR angiography of the extracranial carotid arteries using a two-slab oblique 3-D acquisition.
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1423
OP 1428
VO 13
IS 5
A1 W Li
A1 J Kramer
A1 J Kleefield
A1 R R Edelman
YR 1992
UL http://www.ajnr.org/content/13/5/1423.abstract
AB 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.