Iliceto S, Sorino M, Rizzon P
G Ital Cardiol. 1984 Feb;14(2):127-31.
We performed in vitro experiments to study blood echodensity during stasis or slow flow rate. Quantitative and qualitative evaluation of water, blood, plasma and washed red cells at different dilutions (1:5, 1:10, 1:20, 1:50) were made. Two 2D echo equipments (2,5,-3,5 Mhz) were utilized. No echoes were observed in water and plasma. Blood was strongly echogenic. A progressive reduction of the echodensity of washed red cells was observed with increasing dilution. We conclude that scattering of ultrasound by blood, during stasis or slow flow, can be detected utilizing commercially available echocardiographic systems; red cells may represent the scattering agent.
我们进行了体外实验，以研究血液在淤滞或缓慢流速下的回声密度。对不同稀释度（1:5、1:10、1:20、1:50）的水、血液、血浆和洗涤红细胞进行了定量和定性评估。使用了两台二维超声设备（2.5、-3.5兆赫兹）。在水和血浆中未观察到回声。血液具有强回声。随着稀释度增加，观察到洗涤红细胞的回声密度逐渐降低。我们得出结论，利用市售的超声心动图系统可以检测到血液在淤滞或缓慢流动期间的超声散射；红细胞可能是散射剂。
