Abstract:
:Doppler sonography and magnetic resonance (MR) angiography were prospectively used in combination as a substitute for conventional angiography in 24 consecutive patients likely to undergo carotid endarterectomy. Of 19 patients (20 lesions) who underwent carotid endarterectomy, 18 had not undergone preoperative angiography. High-grade lesions (> 75%-diameter stenosis) were surgically confirmed in 16; a 60%-70% stenosis, in one; and subtotal occlusion of the internal carotid artery, in another. Angiography was performed in a case of suspected internal carotid artery dissection. In the five nonsurgical cases, no significant stenosis was noted with both techniques in two instances, total occlusion was seen in two cases, and an asymptomatic stenosis was seen in one. Follow-up (average, 4.5 months) showed one case of symptomatic occlusion of the internal carotid artery after endarterectomy. This preliminary study suggests that the combined use of Doppler sonography and MR angiography can, in up to 79% (15 of 19) of cases, replace angiography for the preoperative evaluation of patients likely to need carotid endarterectomy.
journal_name
Radiologyjournal_title
Radiologyauthors
Polak JF,Kalina P,Donaldson MC,O'Leary DH,Whittemore AD,Mannick JAdoi
10.1148/radiology.186.2.8421730subject
Has Abstractpub_date
1993-02-01 00:00:00pages
333-8issue
2eissn
0033-8419issn
1527-1315journal_volume
186pub_type
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