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左心室舒张的时间过程即心脏舒张时间间期(DTI)对于评价心脏舒张功能有重要意义。尽管DTI的概念早已确定,但对它的研究和应用远不及收缩时间间期那样普遍。在整体水平上,DTI难以精确测定,血流动力学方法的创伤性限制了对正常人进行系统的研究。在流行的无创技术中,尚缺乏精确反映舒张期充盈过程的方法。因此关于DTI的正常值及其意义的报道殊多差异。阻抗血流图作为一种无创手段,若能正确应用,可以提供许多生理和病理信息。我们借鉴这
The time course of left ventricular diastole, diastolic time (DTI), is important for the assessment of diastolic function. Although the concept of DTI has long been established, the research and application of DTI is far less common than the contraction period. At the overall level, DTI is difficult to measure accurately, and traumatic hemodynamic measures limit the systematic study of normal individuals. In the popular noninvasive techniques, there is a lack of accurate methods to reflect the diastolic filling process. Therefore, the reports on the normal value of DTI and its significance vary greatly. As a noninvasive means, the impedance blood flow map, if used correctly, can provide many physiological and pathological information. We learn from this