Liboni W, Bertolotto A, Urciuoli R
J Neurosurg Sci. 1983 Jan-Mar;27(1):23-30.
The Doppler technique has only been used in neurological practice to evidence local vessel pathology such as occlusion or stenosis. Both common carotid artery and internal jugular vein flows can change not only because of pathological processes of the vessels but also because of impedance of their distribution territory. In this report we analyze the relationship between flow velocity, one of the parameters of blood flow, and intracranial impedance variations which occur in cerebral concussion, tumors and acute vascular cerebral pathology. During our observations we noticed that the diastolic wave of the velocity curve of the common carotid artery is a very important signal of the flow variations in the internal carotid artery and, in turn, of variations in cerebral flow. We studied the behaviour of the common carotid artery velocity curve in our patients both during clinical disease development and during the action of mannitol in the acute phases of the disease. We found that the ultrasonic patterns during antiedema action were similar to the ones obtained during the recovery period. We were able to note some differences and some similarities of the curve morphology in relation to generalized or focal causes of cerebral edema. This may be very important considering that at present no non-invasive and therefore repeatable technique is available for monitoring cerebral blood flow in intracranial hypertension.
多普勒技术在神经科实践中仅用于证实局部血管病变，如闭塞或狭窄。颈总动脉和颈内静脉的血流变化不仅可能是由于血管的病理过程，还可能是由于其分布区域的阻抗变化。在本报告中，我们分析了血流参数之一的流速与脑震荡、肿瘤及急性脑血管病变时颅内阻抗变化之间的关系。在观察过程中，我们注意到颈总动脉流速曲线的舒张波是颈内动脉血流变化以及进而脑血流变化的一个非常重要的信号。我们研究了患者在临床疾病发展过程中以及在疾病急性期甘露醇作用期间颈总动脉流速曲线的表现。我们发现，在抗水肿作用期间的超声图像与恢复期获得的图像相似。我们能够注意到与脑水肿的全身性或局灶性病因相关的曲线形态存在一些差异和相似之处。鉴于目前尚无用于监测颅内高压时脑血流的非侵入性且因此可重复的技术，这可能非常重要。
