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Side‐to‐side differences and day‐to‐day variations of transcranial Doppler parameters in normal subjects.
Author(s) -
Sorteberg W,
Langmoen I A,
Lindegaard K F,
Nornes H
Publication year - 1990
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.7863/jum.1990.9.7.403
Subject(s) - middle cerebral artery , medicine , transcranial doppler , carotid arteries , anterior cerebral artery , artery , anatomy , cerebral arteries , doppler effect , internal carotid artery , anesthesia , cardiology , ischemia , physics , astronomy
We investigated 35 normal adults to assess variations in cerebral artery blood velocities, hemispheric blood velocity ratios, and pulsatility indices, both with regard to changes between the sides and between days. We found no significant variations between sides or days. Changes from one day to the next exceeding 20% in blood velocity in the middle cerebral artery (VMCA), the anterior cerebral artery (VACA), the distal extracranial internal carotid artery (VICA), and in the hemispheric VMCA/VICA, VACA/VICA, or VACA/VMCA ratios, may be considered significant at the 95% level.