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采用 LVIG 方法测定180例正常人(男110例,女70例,年龄15-78岁)DTI 各指标值,分别为 IRT:62.48±10.55ms,RFT:116.11±19.65ms,EDT178.50±22.13ms,SFT:244.54±116.34ms,AST:118.69±20.44ms,SFT/AST:2.17±1.12;其中 IRT,RFT,EDT 三个指标所测值与其他作者报告的结果极相接近.IRT、RFT、EDT 和 AST 与年龄增长呈非常显著正相关(分别 r=+0.92,r=+0.94,r=+0.98,r=+0.89);老年(≥60岁),老年前(45-59岁),壮年(30-44岁),青年(<30岁)四个年龄组中存在显著的差异(P<0.01或 P<0.05);SFT 和 SFT/AST 与年龄增长呈显著负相关(分别 r=-0.80,r=-0.88),这些结果均说明左室舒张功能有自然“衰变”的趋势。
The indexes of DTI in 180 normal subjects (110 males, 70 females and 15-78 years of age) were determined by LVIG method. The indexes of DTI were 62.48 ± 10.55ms, RFT: 116.11 ± 19.65ms, EDT178.50 ± 22.13ms , SFT: 244.54 ± 116.34ms, AST: 118.69 ± 20.44ms, SFT / AST: 2.17 ± 1.12, respectively.The IRT, RFT and EDT measured by the three authors were very close to those reported by other authors.IRT, RFT, EDT And AST were significantly and positively correlated with age (r = +0.92, r = +0.94, r = +0.98, r = +0.89); elderly (≥60 years old), elderly (45-59 years old) (P <0.01 or P <0.05). There was a significant negative correlation between SFT and SFT / AST and age (r = -0.80 , r = -0.88), these results show that left ventricular diastolic function has a natural “decay” trend.