动脉狭窄,例如颈部(颈动脉狭窄)
多普勒超声可通过测量音高(频率)的变化率来评估血液流动的速度。在多普勒超声检查过程中,一名受过超声成像训练的技术人员(超声波医师)将一块肥皂大小的小型手持设备(换能器)按压在被检查区域的皮肤上,并根据需要从一个区域移动到另一个区域。
该项检查可替代侵入性更强的检查,比如血管造影,血管造影需要向血管中注射造影剂,以便在 X 线图像上清楚显示。
多普勒超声检查也可帮助医生检查您的动脉有无损伤,或监测针对静脉和动脉的特定治疗。
Sheldon G. Sheps, M.D.
Duplex ultrasound. Society for Vascular Surgery. https://vascular.org/patient-resources/vascular-tests/duplex-ultrasound. Accessed Dec. 3, 2019.
Ultrasound - vascular. Radiological Society of North America. https://www.radiologyinfo.org/en/info.cfm?PG=vascularus. Accessed Dec. 3, 2019.
Mitchell E. Noninvasive diagnosis of arterial disease. https://www.uptodate.com/contents/search. Accessed Dec. 3, 2019.
Ferri FF. Diagnostic imaging. In: Ferri's Best Test: A Practical Guide to Clinical Laboratory Medicine and Diagnostic Imaging. 4th ed. Elsevier; 2019. https://www.clinicalkey.com. Accessed Dec. 3, 2019.