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

J Korean Neurol Assoc > Volume 16(3); 1998 > Article

Journal of the Korean Neurological Association 1998;16(3): 264-270.

정상 MRI, MRA 소견을 보인 건강한 성인의 Transcranial Doppler Ultrasonography의 정상 참고치

조수진, 정진상, 이광호

성균관 의과 대학교 삼성서울병원 신경과

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

Soo-Jin Cho, MD; Chin-Sang Chung, MD, PhD; Kwang-Ho Lee, MD, PhD

Department of Neurology, Samsung Medical Center, College of Medicine, Sung Kyun Kwan University.

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. Key Words : transcranial Doppler ultrasonography, reference value, magnetic resonance angiography.