Boccalon H
Service de Chirurgie cardiaque vasculaire et Angélologie, CHU de Rangueil Toulouse.
Ann Cardiol Angeiol (Paris). 1989 Oct;38(8):461-4.
Proper determination of vascular haemodynamics requires measurement of flow and pressure. The objective of this study is to provide methods of measurement of the arterial flow, which may currently be performed via an external approach. The techniques in question include non-invasive electromagnetic flowmetry (NMF) and flowmetry by NMR. NMF uses external magnets, the signal is collected by common cutaneous electrodes; the equipment is simple and may be used in a cardio-angeiology office. It main advantage lies in the screening of arterial diseases (very reproductable and sensitive), monitoring of the treatment (unrelated to the operator), study of hardened arteries (diabetes). Flowmetry by NMR requires a more sophisticated and costly equipment; it permits staged measurements, as well as a scan permitting measurements in one single artery; it is mostly used in specialized centres. Arterial lesions may be defined as not yet significant when only the blood pressure is considered, while the pulsatile flow is already altered; transluminal angioplasties performed in these circumstances, permit to restore the clinical picture as well as increasing twofold the initial flow.
正确测定血管血流动力学需要测量流量和压力。本研究的目的是提供动脉血流的测量方法，目前这些方法可通过外部途径进行。所讨论的技术包括无创电磁血流测量法（NMF）和核磁共振血流测量法。NMF使用外部磁体，信号由普通皮肤电极收集；该设备简单，可在心血管病科使用。其主要优点在于筛查动脉疾病（重复性好且敏感）、监测治疗（与操作者无关）、研究硬化动脉（糖尿病）。核磁共振血流测量法需要更复杂且昂贵的设备；它允许进行分期测量，以及通过扫描在单根动脉中进行测量；它主要用于专业中心。当仅考虑血压时，动脉病变可能被定义为尚不显著，而此时搏动血流已经改变；在这些情况下进行腔内血管成形术，可使临床症状恢复，并使初始流量增加两倍。
