J Korean Neurol Assoc.  1998 Jun;16(3):264-270.

Reference Values of Transcranial Doppler Ultrasonography Measurements of Healthy Adults with Normal MRI and MRA Findings.

• Cho SJ
• Chung CS
• Lee KH

Abstract

BACKGROUND AND PURPOSE: We present reference values of flow velocities of the intracranial and extracranial cerebral arteries for transcranial Doppler ultrasonography of healthy adults with normal MRI and MRA findings.
METHODS
We selected 131 presumed normal subjects among 220 visitors of our stroke prevention clinic by strict exclusion criteria based on clinical, MRI, and MRA findings. We excluded those with history of migraine, infarct (s) on MRI, significant stenosis on MRA (more than 50% in diameter), and abnormal hematocrit levels.
RESULTS
The age of the subjects ranged from 33 to 69 years (mean+SD: 53.5+7.60). Mean flow velocities in men at their 6 decades are 50.6+8.42 cm/sec in MCA, 46.6+9.40 cm/sec in ACA, 29.2+6.70 cm/sec in PCA and 35.3+9.28 cm/sec in BA. The upper limit of normal left-right velocity ratio was 1.43 in MCA, 1.50 in ACA, and 1.51 in PCA. The upper limit of normal range of hemispheric index was 2.96.
CONCLUSION
This is the first report of references values of transcranial Doppler ultrasonography in healthy subjects with the normal MRI and MRA findings.

Keyword

transcranial Doppler ultrasonography; reference value; magnetic resonance angiography

MeSH Terms

Adult*
Cerebral Arteries
Constriction, Pathologic
Hematocrit
Humans
Magnetic Resonance Angiography
Magnetic Resonance Imaging*
Male
Migraine Disorders
Passive Cutaneous Anaphylaxis
Reference Values*
Stroke
Ultrasonography, Doppler, Transcranial*