Kallio T, Alanen A
Department of Diagnostic Radiology, Turku University Central Hospital, Finland.
Invest Radiol. 1988 Nov;23(11):832-5. doi: 10.1097/00004424-198811000-00006.
The echogenicity of blood varies with the conditions of flow. This study introduces a new technique for quantifying blood echogenicity and includes digitalization of the signal from an A-mode ultrasound scanner, integration, subtraction, and computer analysis of the signal. Shear rate (directly proportional to velocity) had an inverse relationship to the blood echogenicity. Hemodilution with Ringer's solution and with low-molecular-weight dextran 1 decreased blood echogenicity, whereas the addition of a macromolecular protein (dextran 70) increased blood echogenicity. This technique makes possible a quantitative analysis of the factors affecting blood echogenicity.
血液的回声性随血流状况而变化。本研究引入了一种量化血液回声性的新技术，包括对A模式超声扫描仪信号的数字化处理、信号的积分、减法运算以及计算机分析。剪切率（与速度成正比）与血液回声性呈反比关系。用林格氏液和低分子右旋糖酐1进行血液稀释会降低血液回声性，而添加大分子蛋白质（右旋糖酐70）则会增加血液回声性。该技术使对影响血液回声性的因素进行定量分析成为可能。
