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由于超声波反射法的技术不断改进和进一步发展,使得近年来超声心动图能够超越形态学诊断的界限,而能对左心室的功能作出分析。由于现在用超声回波法计算心脏结构可以达到毫米的精确度,就促进了这一发展。这种无创伤的检查方法具有下列优点,可以随意地进行而对病人无危险,因此超声心动图特别适合于对病人的心脏功能作随访观察。通常超声心动图靠手来计算。而且只是计算某些点,如只是舒张末期和收缩末期时刻的值。为了使很费时的手工计算分析超越只能确定某些参数的界限,而能扩展到整个
Due to the continuous improvement and further development of ultrasound reflectometry technology, echocardiography has been able to surpass the limits of morphological diagnosis in recent years, and can analyze the function of left ventricle. This is fostered by the fact that the accuracy of the millimeter can now be calculated using the echocardiography of the heart structure. This non-invasive procedure has the advantage of being free to be patient-friendly and therefore echocardiography is particularly well suited for follow-up of patients with cardiac function. Usually echocardiography by hand to calculate. And just calculate some points, such as just the end-diastolic and end-systolic values. In order to make time-consuming manual calculation and analysis can only determine certain parameters of the boundaries, but can be extended to the whole