Watanabe Nozomi
Miyazaki Medical Association Hospital Cardiovascular Center, 738-1 Funado, Sinbeppu-cho, Miyazaki, 880-0834, Japan.
J Echocardiogr. 2017 Jun;15(2):49-56. doi: 10.1007/s12574-016-0324-2. Epub 2017 Jan 23.
Echo Doppler is widely available in the clinical setting, and the feasibility of coronary flow detection in the left anterior descending coronary artery has been reported as >90% with the use of a high-frequency transducer. Coronary flow detection takes only a few minutes by skilled echocardiologists, and this noninvasive technique can provide useful physiological information in patients with various types of coronary artery disease. Coronary flow velocity reserve measurement by echo Doppler is a simple and easy technique. It is available in the echo laboratory as well as in the outpatient clinic, and can be used as an alternative examination to screen for significant coronary stenosis in patients with stable angina. Moreover, physiological information provided by coronary flow velocity reserve can be used in combination with other imaging modalities that can provide anatomical information of the coronary arteries such as coronary computed tomography or coronary angiography. Coronary flow velocity in patients with acute coronary syndrome (ACS) enables rapid noninvasive differentiation of TIMI-III from TIMI-II coronary reperfusion before emergency coronary intervention. Transthoracic coronary flow detection by echo Doppler contributes to the assessment of the coronary reperfusion status in the emergency room for patients with ACS, prior to invasive coronary angiography.
超声多普勒在临床环境中广泛可用，并且使用高频换能器时，左前降支冠状动脉血流检测的可行性报告显示超过90%。熟练的超声心动图医生进行冠状动脉血流检测仅需几分钟，这种无创技术可为各种类型冠状动脉疾病患者提供有用的生理信息。通过超声多普勒测量冠状动脉血流速度储备是一种简单易行的技术。它在超声心动图实验室以及门诊诊所均可进行，并且可作为一种替代检查，用于筛查稳定型心绞痛患者的严重冠状动脉狭窄。此外，冠状动脉血流速度储备提供的生理信息可与其他能够提供冠状动脉解剖信息的成像方式（如冠状动脉计算机断层扫描或冠状动脉造影）联合使用。急性冠状动脉综合征（ACS）患者的冠状动脉血流速度能够在急诊冠状动脉介入治疗前快速无创地区分TIMI-III级与TIMI-II级冠状动脉再灌注。经胸超声多普勒冠状动脉血流检测有助于在有创冠状动脉造影之前，对急诊室中的ACS患者的冠状动脉再灌注状态进行评估。
