| 李一丹,吴雅峰,王丽,隗冬梅,姜维,张苹娜.扩张型心肌病患者的多普勒组织速度及追踪图特点[J].中国医学影像技术,2007,23(3):404~406 |
| 扩张型心肌病患者的多普勒组织速度及追踪图特点 |
| Characteristics of quantitative tissue velocity imaging and tissue tracking imaging in dilated cardiomyopathy |
| 投稿时间：2006-06-07 修订日期：2006-10-20 |
| DOI： |
| 中文关键词: 多普勒组织成像 扩张型心肌病 心室功能 左 |
| 英文关键词:Doppler tissue imaging Dilated cardiomyopathy Ventricular function, left |
| 基金项目: |
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| 中文摘要: |
| 目的 分析扩张型心肌病(DCM)患者多普勒组织成像图(DTI)特点,探讨其临床应用价值。 方法 ①二维多普勒(2D):舒张末期左室面积(AC),左室长轴径线(L),左室后壁厚度(LVPWd)、左室射血分数(EF);②定量组织速度图(QTVI):左室壁各节段收缩期(s波)、舒张早期(e波)、心房收缩期(a波)的峰值速度(Sm、Em、Am)及速度-时间积分(VTI);左室后壁心内膜速度(Vend),心外膜速度(Vepi);③组织追踪图(TTI):6个室壁二尖瓣环水平收缩期位移(mvd);(4)计算b/a比率、Em/Am、速度阶差(VG)、跨壁速度阶差(MVG)、二尖瓣环水平收缩期位移总和(∑mvd)。结果 DCM患者,①b/a比率增加;②各节段Sm、VTI、∑mvd、VG、MVG均较正常对照组明显减低,且各节段Em/Am比值均小于1(P均<0.001);③EF与b/a比率呈显著负相关(r=-0.59, P<0.001),与∑mvd显著正相关(r=0.88, P<0.001),与MG及MVG呈正相关(r=0.45,0.43, P均<0.01)。 结论 分析扩张型心肌病患者多普勒组织速度及追踪图特点,能够为临床正确判断病情提供可靠的信息。 |
| 英文摘要: |
| Objective To quantitatively assess global and regional left ventricle (LV) systolic and diastolic function by Doppler tissue imaging. Methods ①2D: The end-diastolic area of left ventricle (AC), length in long-axis of LV (L), the end-diastolic diameters of left ventricular posterior wall (LVPWTd), ejection fraction (EF); ②QTVI: The peak velocity and VTI of s wave, e wave, a wave in each segments of septal, lateral, anterior, inferior ante-septal and posterior walls were detected. The velocity of endocardium and epicardium in left ventricular posterior wall were detected as well; ③TTI: The systolic mitral valve displacement (mvd) in 6 sites were determined by tissue tracking technique; ④b/a ratio, Em/Am, velocity gradient (VG), myocardial velocity gradient (MVG), the sum of mvd (∑mvd) were calculated. Results Compared to healthy controls, ①The b/a ratio of DCM increased; ②In group of DCM, the peak velocity of Sm, VTI, ∑mvd, VG and MVG were significantly decreased and Em/Am<1 (P respectively<0.001); ③EF negative correlated very closely with b/a ratio (r=-0.59, P<0.001). EF positive correlated very closely with ∑mvd (r=0.88, P<0.001); And positive correlated with VG and MVG (r=0.45 and 0.43 respectively, P<0.01). Conclusion Evaluation of QTVI and TTI in dilated cardiomyopathy can provide reliable information to clinic. |
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