| 何伟红,谭理连,李志铭,刘世明,江金带,李树欣,简婉晶.320排螺旋CT观察正常心脏二尖瓣[J].中国医学影像技术,2010,26(11):2099~2102 |
| 320排螺旋CT观察正常心脏二尖瓣 |
| Observing normal mitral valve of cardiac with 320-slice spiral CT |
| 投稿时间：2010-07-15 修订日期：2010-08-15 |
| DOI： |
| 中文关键词: 心脏 二尖瓣 体层摄影术,X线计算机 |
| 英文关键词:Heart Mitral valve Tomography, X-ray computed |
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| 中文摘要: |
| 目的 探讨320排螺旋CT评价正常人心脏二尖瓣形态与功能的价值。方法 50名心脏瓣膜正常成年人接受320排螺旋CT冠状动脉检查,重建心动周期10个时相,采用各时相多平面重组(MPR)、最大密度投影(MIP)、色彩点亮技术(Colored Lit)、容积再现技术(VRT)并结合容积电影成像观察和分析二尖瓣的形态,在垂直或平行室间隔左心室长轴、双口位和左心室短轴位上测量二尖瓣长度、厚度、二尖瓣附着缘宽度、二尖瓣开口直径和面积、二尖瓣环直径和面积、二尖瓣口环直径比、面积比以及二尖瓣前后瓣开放角度。结果 二尖瓣前瓣长(25.91±4.70)mm,厚(1.97±0.05)mm和后瓣长(13.19±2.52)mm,厚(1.13±0.03)mm,二尖瓣附着缘宽度前瓣(39.14±6.84)mm、后瓣(81.50±9.90)mm,二尖瓣口直径(18.90±3.12)mm、面积(413.44±69.92)mm2,二尖瓣环直径(31.89±5.78)mm、面积(823.94±114.17)mm2,二尖瓣口环直径比为约1 ∶ 1.68,面积比约1 ∶ 1.98,二尖瓣前后瓣开放角度分别为(63.26±12.03)°和(53.54±10.35)°。结论 320排螺旋CT可定量分析二尖瓣形态特征及其运动功能。 |
| 英文摘要: |
| Objective To assess the value of 320-detector row CT in observing normal mitral valve. Methods Fifty normal adults without abnormality of heart underwent 320-detector row CT scan. The image data were analyzed retrospectively. Ten time phases in the cardiac cycle were reconstructed. The morphologic features of the mitral valve were analyzed using the multiplanar reformation (MPR), maximum intensity projection (MIP), Colored Lit, volume rendering technique (VRT) and Cine CT. The length and height of the mitral valve, the length of anterior and posterior mitral root, diameter and area of the mitral annulus and the mitral valve,and the open angle of the mitral valve were measured at the cardiac H-long axis, dual-port axis and short-axis. Results The length of anterior and posterior mitral was (25.91±4.70)mm and (13.19±2.52)mm, respectively. The height of anterior and posterior mitral was (1.97±0.05)mm and (1.13±0.03)mm, respectively. The length of anterior and posterior mitral annulus was (39.14±6.84)mm and (81.50±9.90)mm, respectively. The maximal diameter and area of the mitral valve was (18.90±3.12)mm and (413.44±69.92)mm2, respectively. Correspondingly, the diameter of mitral annulus was (31.89±5.78)mm and (823.94±114.17)mm2. The diameter ratio of mitral valve to mitral annulus was 1 ∶ 1.68 and the area ratio was 1 ∶ 1.98. The maximal open angle was (63.26±12.03)° and (53.54±10.35)° for the anterior and posterior valves respectively. Conclusion The 320-slice spiral CT can analyze the morphology and function of mitral valve, being effective to evaluate the normal mitral valve. |
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