美《生物医学电子学》第15卷第13期(1980年)报道:美国医院供应公司正在采用一种电子装置,快速、安全和廉价地预测脑卒中的危险。这种诊断工具称为Spectraview是使用一个传声器,置于病人颈部能测出血液涡流的声音,可表明向脑部供血的动脉是否发生狭窄。医生通过记录血流的声音,使用此装置的插入式电子计算机分析结果,能推断出动脉狭窄的位置和程度。由于血管内壁沉积物所致之颈动脉 US Biomedical Electronics Vol. 15, No. 13 (1980) reported that US hospital supply companies are using an electronic device to quickly, safely and inexpensively predict the risk of stroke. This diagnostic tool, called Spectraview, uses a microphone placed in the patient’s neck to detect the vortex of the bloodstream, indicating the narrowing of the artery supplying the brain. The physician can infer the location and extent of arterial stenosis by recording the sound of the bloodstream and using plug-in computer analysis of the device. Carotid artery due to vascular wall deposits