论文部分内容阅读
对血液超声性质的研究,超声生物物理学界和医学界一直表现出极大的兴趣。本文研究表明:红细胞压缩性与其血红蛋白质含量成反比。在血液的由细胞级结构引起的超声衰减中,红细胞超声吸收的贡献为主,红细胞相对血浆运动的粘滞损耗小于15%,而红细胞超声散射损耗则可略而不计。血液凝固状态的变化伴有超声参量的明显改变,用超声技术检测血液凝固比传统的粘滞法有较大的优越性。血液凝固使其超声衰减增大,但衰减的频率关系无明显变化。血液凝固使其超声背向散射和非线性参量B/A值明显增大。这些研究结果对发展超声医学具有十分重要的现实意义。
Ultrasound biophysics and the medical community have shown great interest in the study of the ultrasound properties of blood. Our study shows that erythrocyte compressibility is inversely proportional to hemoglobin content. In the blood by the cell-level structure caused by ultrasonic attenuation, the main contribution of erythrocyte ultrasound absorption, red blood cell relative plasma viscosity loss is less than 15%, while the red blood cell ultrasonic scattering loss can be negligible. Changes in blood coagulation state accompanied by significant changes in ultrasound parameters, the use of ultrasound to detect blood coagulation than the traditional sticky method has greater advantages. Blood coagulation increased its ultrasonic attenuation, but no significant change in the frequency of attenuation. Blood coagulation makes it ultrasonic backscatter and non-linear parameters B / A value increased significantly. These findings are of great practical significance for the development of ultrasound medicine.