目的：用门控核素心室显像法（门控核素法）及声学定量技术（ＡＱ法）、Ｍ超法测定１８例正常人及２２例冠心病的左心功能参数，探讨三种方法测定左心功能的价值。方法：运用门控核素法及ＡＱ法在较短时间内分别测定正常组和冠心病组的左室射血分数（ＬＶＥＦ）、左室最大射血率（ＬＰＥＲ）、左室最大充盈率（ＬＰＦＲ）及左室最大充盈时间（ＬＴＰＥＲ），同时Ｍ超法测定ＬＶＥＦ作为心功能指标，并进行统计学分析。结果：门控核素法与ＡＱ法病例组ＬＶＥＦ之间、ＬＰＥＲ之间测值相关性均较好（ｒ分别为０６５，０５８），且配对ｔ检验均ｐ＞００５；其余各组两种方法左心功能的测值之间相关性较差。正常组的ＬＰＦＲ之间及病例组的ＬＰＦＲ之间配对ｔ检验ｐ＜００５。Ｍ超法与门控核素法的正常组ＬＶＥＦ之间和病例组ＬＶＥＦ之间测值均很接近，各自配对ｔ检验均ｐ＞００５。结论：ＡＱ法与门控核素法比较，其左心功能测值差异性较大。Ｍ超法测定ＬＶＥＦ是基本稳定和可靠的 OBJECTIVE: To determine the left ventricular function parameters of 18 normal subjects and 22 patients with coronary heart disease by M-gated by gated radionuclide imaging (gated radionuclide) and acoustic quantification (AQ) Determine the value of left ventricular function. Methods: Gated left ventricular ejection fraction (LVEF), left ventricular ejection fraction (LPER) and left ventricular maximum rate of filling (LVEF) were measured by gated nuclear nuclide method and AQ method in a short time. LPFR) and maximum left ventricular filling time (LTPER). At the same time, LVEF was determined by M-ultrasonography as a cardiac function index, and statistical analysis was performed. Results: There was a good correlation between gonadal radionuclide test and LVEF and LPER in patients with AQ (r = 065,058, respectively), and p> 005 by paired t test. The rest of the two groups of methods left ventricular function measured between the poor correlation. Paired t-test between LPFR of normal group and LPFR of case group p <005. M-method and gated nuclide method between normal group LVEF and case group LVEF measured values ​​?? are close to each paired t test were p> 0  05. Conclusion: AQ method and gated radionuclide method, the left ventricular function measured differences. The M-mode determination of LVEF is basically stable and reliable