摘要
目的：采用实时三维超声心动图（RT-3DE）结合半自动内膜边界探测技术，探讨正常人左室各节段容积参数的演变规律。方法：健康成人36例，应用RT-3DE结合半自动内膜边界探测技术测量左室节段容积参数，包括左室节段舒张末期容积（sEDV）、节段收缩末期容积（sESV）和节段每搏量（sSV），并将各测值行节段间比较。结果：①正常人左室各节段容积－时间曲线为“U”型波状，形态一致，波峰和波谷坐标相近；②左室壁对应节段比较，各容积测值从基底段至心尖段呈递减趋势，而大部分室壁中间段和心尖段测值之间差异无统计学意义；③沿左室长轴纵向分组比较，基底节段组容积测值较中间节段和心尖节段组高，而中间和心尖节段组之间各项测值差异无统计学意义；④沿左室短轴横向分组比较，前壁、前间隔和侧壁节段组容积测值最大，后壁和后间隔节段组次之，下壁节段组最小。结论：RT-3DE能简便、准确地评价正常人左室节段容积参数，左室各节段容积参数存在异质性。
Abstract
Objective: To explore the characteristics of normal left ventricle(LV) segmental volumetric parameters using real-time three dimensional echocardiography(RT-3DE) combined with semi-automatic boundary detection method. Methods: Thirty-six healthy adults were studied. Using RT-3DE combined with semi-automatic boundary detection method, a series of segmental LV volumetric parameters were measured, which were segmental end diastolic volume(sEDV), segmental end systolic volume(sESV) and segmental stroke volume(sSV). Then all the parameters in different segments were compared respectively. Results: ①Segmental volume-time curves of normal LV are “U-shaped” and uniform, and the coordinates of curve peak and valley are nearby. ②Comparing between segments of corresponding LV wall, sEDV, sESV and sSV decrease from basal segments to apical segments. However, there are no statistical differences between middle segments and apical segments of most LV walls. ③Comparing groups along LV longitude, segmental volumes of basal-segment group are larger than those of mid-segment group and apical-segment group. However, there are no statistical differences between mid-segment group and apical-segment group. ④Comparing groups along LV circumference, segmental volumes of anterior, anteroseptal and lateral segment group are largest, those of posterior and septal segment group take 2nd place, and those of inferior segment group are smallest. Conclusions: RT-3DE can conveniently and accurately evaluate normal LV segmental volumetric parameters, and volumetric parameters of different LV segments are heterogeneity.
关键词
心室 /
心脏容量 /
超声心动描记术 /
三维
Key words
Heart ventricles /
Cardiac volume /
Echocardiography /
three-dimensional
袁 莉;王新房;谢明星;吕 清;刘夏天;贺 林.
实时三维超声评价正常人左室节段容积参数的初步探讨[J]. 中国临床医学影像杂志. 2008, 19(2): 99-102
YUAN Li;WANG Xin-fang;XIE Ming-xing;LV Qing;LIU Xia-tian;HE Lin.
Initial exploration of assessing normal left ventricle segmental volumetric parameters by real time three dimensional echocardiography[J]. Journal of China Clinic Medical Imaging. 2008, 19(2): 99-102
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