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首页> 外文期刊>Journal of Clinical Ultrasound: JCU >Doppler sonography evaluation of flow velocity and volume of the extracranial internal carotid and vertebral arteries in healthy adults.
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Doppler sonography evaluation of flow velocity and volume of the extracranial internal carotid and vertebral arteries in healthy adults.

机译：多普勒超声检查对健康成年人颅外颈内动脉和椎动脉的流速和体积的评估。

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PURPOSE: To measure with Doppler sonography the velocity and volume of blood flow in the extracranial internal carotid artery (ICA) and vertebral artery (VA) of healthy adults and to calculate total cerebral blood flow volume (tCBFV). METHODS: Bilateral ICA and VA were examined sonographically in 180 healthy adults. Angle-corrected peak systolic (Vps), end-diastolic (Ved), and time-averaged maximum blood flow velocity (TAV) were measured in pulsed Doppler mode, and the resistance index (RI) and pulsatility index (PI) were calculated. The cross-sectional area (A) was measured on gray-scale images. Volume flow was calculated as FV = TAV x A, and tCBFV was calculated as the sum of the right and left ICA and VA volume flow. RESULTS: tCBFV was 651 +/- 96 ml/min for the entire population. There was a significant decrease in Vps, Ved, TAV, and tCBFV with age in all arteries. RI and PI values initially declined and then increased with age. Cross-sectional area increased with age in ICA but not in VA. PI and RIwere higher in men than in women. Blood flow velocity and volume were higher, and RI was lower in the left than in the right VA. CONCLUSION: The Doppler sonographic assessment of extracranial ICA and VA blood flow volume may be useful for the study of cerebral hemodynamic changes in patients with cerebrovascular disorders. Age-dependent changes should be considered, for instance, in the management of intensive care patients with impaired cerebral perfusion.
机译：目的：用多普勒超声检查健康成年人颅外颈内动脉（ICA）和椎动脉（VA）的血流速度和流量，并计算总脑血流量（tCBFV）。方法：对180名健康成年人进行双侧ICA和VA超声检查。在脉冲多普勒模式下测量角度校正的峰值收缩压（Vps），舒张末期（Ved）和时间平均最大血流速度（TAV），并计算阻力指数（RI）和搏动指数（PI）。在灰度图像上测量横截面积（A）。体积流量计算为FV = TAV x A，tCBFV计算为左右ICA和VA体积流量之和。结果：整个人群的tCBFV为651 +/- 96 ml / min。随着年龄的增长，所有动脉的Vps，Ved，TAV和tCBFV均显着下降。 RI和PI值最初随着年龄的增长而下降，然后增加。在ICA中，截面积随年龄增加而在VA中不随年龄增加。男性的PI和RI高于女性。左侧的血流速度和体积较高，而右侧的VA RI较低。结论：多普勒超声对颅外ICA和VA血流量的评估可能有助于研究脑血管疾病患者的脑血流动力学变化。例如，在脑灌注受损的重症监护患者的治疗中，应考虑年龄相关的变化。

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