Acoustic streaming was generated in blood during coagulation using high intensity focused ultrasound (HIFU) and imaged in real-time with regular color Doppler imaging. The streaming velocity was measured at various time points during the coagulation process until a clot was well formed. In unclotted blood the mean streaming velocity was 3.8 cm/s. During the clot formation the velocity decreased gradually to 1.6 cm/s and the reverse flow disappeared entirely. The changes in velocity magnitude and flow pattern appear to provide a method to differentiate clots from fluidic blood and estimate the state of coagulation.
展开▼
机译：使用高强度聚焦超声（HIFU）在凝血过程中在血液中产生声流，并使用常规彩色多普勒成像实时成像。在凝固过程中的各个时间点测量流速，直到形成凝块为止。在未凝结的血液中，平均流速为3.8 cm / s。在凝块形成期间，速度逐渐降低至1.6 cm / s，逆流完全消失。速度大小和流动模式的变化似乎提供了一种区分血块和流体血液并估计凝结状态的方法。
展开▼
