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Diagnosis of Internal Carotid Pseudo-occlusion by Use of Color-Coded Duplex Scanning

A Case Report

Department of Neurology and Surgery, Leicester Royal Infirmary, Leicester, England

M. E. Gaunt, F.R.C.S.

S. Nydahl, M.D.

D. A. Ratliff, M.D., F.R.C.S.

Department of Surgery, Leicester Royal Infirmary, Leicester, England

The differentiation of "pseudo" from complete carotid artery occlusion is still widely considered to be an indication for intraarterial angiography. The authors report a case in which color-coded duplex ultrasound revealed a persisting string-like lumen that was not adequately demonstrated by angiography. The duplex diagnosis of "pseudo" occlusion requires the use of low-pulse repetition frequencies and in future may reduce the need for invasive imaging techniques. If angiography is undertaken, even delayed films may fail to demonstrate the residual lumen adequately.

Vascular and Endovascular Surgery, Vol. 29, No. 4, 303-307 (1995)
DOI: 10.1177/153857449502900408


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