心功能的无创伤(非侵入性)检查是目前临床评价心脏机能情况的重要方法。侵入性检查如采用右心导管、Swan-Ganz漂浮导管、左心导管测定压力和血氧,或以染料稀释、热稀释、心血管造影或电影等方法测定心脏功能结果虽较可靠,但方法设备较复杂,且因具有创伤性,不便复查,故不易推广应用。无创伤心功能检查虽是晚近应用于临床,但均与上述创伤检查作过对照研究,证明二者有较高的相关性,具有一定的实用价值。无创伤检查因方法比 Noninvasive (noninvasive) examination of cardiac function is an important method for clinical evaluation of cardiac function. Invasive procedures such as right heart catheterization, Swan-Ganz floating catheter, left ventricular catheter to measure pressure and blood oxygen, or by dye dilution, thermal dilution, cardiovascular angiography or film and other methods of determination of cardiac function results are reliable, but the method equipment More complex, and because of traumatic, inconvenient review, it is not easy to promote the application. Although noninvasive cardiac function tests have recently been applied in clinical practice, they all have been compared with the above-mentioned trauma tests to prove that they have a high correlation and have certain practical value. Non-invasive examination due to method