Reference Values of Transcranial Doppler Ultrasonography Measurements of Healthy Adults with Normal MRI and MRA Findings..
- Author:
Soo Jin CHO
1
;
Chin Sang CHUNG
;
Kwang Ho LEE
Author Information
1. Department of Neurology, Samsung Medical Center, College of Medicine, Sung Kyun Kwan University.
- Publication Type:Original Article
- Keywords:
transcranial Doppler ultrasonography;
reference value;
magnetic resonance angiography
- MeSH:
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*
- From:Journal of the Korean Neurological Association
1998;16(3):264-270
- CountryRepublic of Korea
- Language:Korean
-
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.
