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The Effects of Dolichoectasia on Transcranial Doppler Measurements
Author(s) -
Babikian Viken,
Pochay Val E.,
Sloan Michael A.,
Burdette David
Publication year - 1992
Publication title -
journal of neuroimaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.822
H-Index - 64
eISSN - 1552-6569
pISSN - 1051-2284
DOI - 10.1111/jon19922119
Subject(s) - transcranial doppler , medicine , ischemia , radiology , hemodynamics , doppler effect , blood flow , cardiology , angiography , doppler sonography , cerebral arteries , physics , astronomy
Transcranial Doppler sonography is used to evaluate intracranial hemodynamic changes associated with cervical and intracranial arterial lesions; however, studies of patients with cerebral ischemia and nonstenotic lesions are uncommon. This report presents the transcranial Doppler findings in 4 patients with cerebral arterial dolichoectasia demonstrated by angiography and brain computed tomography. Although blood flow velocities were decreased in all the arteries tested, the pulsatility and resistance indices were normal. Our results suggest that in patients with ischemic cerebrovascular disease, transcranial Doppler findings of low flow velocities should prompt consideration of dolichoectasia.