CAJ | 학술논문

目的：探讨斑点追踪成像技术（speckle tracking imaging，STI）评价长轴左室节段性室壁运动异常的临床价值。方法：采用STI技术检测41例健康人及29例冠心病患者心尖四腔切面、两腔切面及三腔切面18节段的STI纵向峰值应变（LS），并与冠状动脉造影异常供血室壁节段结果及M型超声心动图检测室壁运动结果比较。结果：冠心病患者左室壁运动异常节段STI表现为LS的明显降低，18节段LS均较对照组减低（P<0.01）；冠心病组M型超声心动图表现为室壁运动幅度减低或消失，室壁增厚率减低或消失，18节段室壁运动幅度均较对照组减低（P<0.01）。 STI对冠心病的阳性检出率为87.3%（269/308），M型超声心动图对冠心病的阳性检出率为63.3%（195/308），二者差异有统计学意义（P<0.05）。结论：STI技术能够早期、无创、快速、客观地定量和定性分析左室壁节段性运动异常，明显提高节段性室壁运动异常的检出率。
목적：탐토반점추종성상기술（speckle tracking imaging，STI）평개장축좌실절단성실벽운동이상적림상개치。방법：채용STI기술검측41례건강인급29례관심병환자심첨사강절면、량강절면급삼강절면18절단적STI종향봉치응변（LS），병여관상동맥조영이상공혈실벽절단결과급M형초성심동도검측실벽운동결과비교。결과：관심병환자좌실벽운동이상절단STI표현위LS적명현강저，18절단LS균교대조조감저（P<0.01）；관심병조M형초성심동도표현위실벽운동폭도감저혹소실，실벽증후솔감저혹소실，18절단실벽운동폭도균교대조조감저（P<0.01）。 STI대관심병적양성검출솔위87.3%（269/308），M형초성심동도대관심병적양성검출솔위63.3%（195/308），이자차이유통계학의의（P<0.05）。결론：STI기술능구조기、무창、쾌속、객관지정량화정성분석좌실벽절단성운동이상，명현제고절단성실벽운동이상적검출솔。
Objective:Study of speckle tracking imaging (STI) to evaluate the clinical value of the long axis of left ventricular segmental wall motion abnormalities. Methods:Forty-one healthy subjects and 29 patients with coronary heart disease were ex-amined by STI technology. Apical four chamber view,two chamber view and three chamber view of left ventricle were detected in 18 segments of the STI peak longitudinal strain LS. And the results were compared with abnormal feeding segmental ven-tricular wall of coronary angiography and M-type ultrasonic heartbeat diagram to detect wall motion amplitude results. Results:Left ventricular wall motion abnormalities segment of patients with coronary heart disease showed peak LS obviously reduced by STI. M-type ultrasonic heartbeat diagram showed ventricular wall motion and wall thickening rate reduce or disappear. STI showed the coronary heart disease group of 18 segments of LS were lower than normal control group the difference was statisti-cally significant (P<0.01). M-type ultrasonic heartbeat graphic coronary heart disease group of 18 segmental ventricular wall motion amplitude were lower than normal control group,the difference was statistically significant (P<0.01). The positive detec-tion rate of coronary heart disease was 87.3% by STI,that was 63.3% by M-type ultrasonic heartbeat diagram,there was signifi-cant difference between the two methods (P<0.05). Conclusion:STI technology can early,non-invasively,rapidly and objectively qualitative and quantitative analyze left ventricular segmental wall motion abnormalities,it can improve the detection rate of seg-mental wall motion abnormalities obviously.