Abstract:
:The ability of two noninvasive diagnostic methods--oculoplethysmography-carotid phonoangiography (OPG/CPA) and directional Doppler ultrasonography--to detect extracranial cerebrovascular disease was examined in 400 consecutive studies. Cerebral arteriography was performed in 74 patients. Transient ischemic attack was the most common indication for study (30%). The OPG was normal in 95% of cases in which the diameter of the lumen of the internal carotid artery (ICA) was less than 60% reduced; the ocular pulse was delayed in 86% of cases with ICA stenosis of 60% or more. The overall diagnostic accuracy of OPG was 93%; CPA did not enhance the accuracy of OPG alone. Supraorbital Doppler tests detected 88% of cases of ICA stenosis of 60% or more, but there was a 13% false-positive rate with ICA stenosis of less than 60%. Supratrochlear Doppler tests had only a 1% false-positive rate, but detected only 48% of significant ICA stenoses. Doppler studies were most often abnormal in the presence of ICA occlusion. Thus, OPG was as sensitive as supraorbital Doppler and more sensitive than supratrochlear Doppler in detecting hemodynamically significant ICA stenoses, without the unacceptable false-positive rate observed with the supraorbital Doppler test.
journal_name
Neurologyjournal_title
Neurologyauthors
Ginsberg MD,Greenwood SA,Goldberg HIdoi
10.1212/wnl.29.5.623subject
Has Abstractpub_date
1979-05-01 00:00:00pages
623-31issue
5eissn
0028-3878issn
1526-632Xjournal_volume
29pub_type
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