探头扫查平面与肌纤维走行方向夹角对剪切波传播速度的影响

发布时间：2018-01-31 12:35

本文关键词： 弹性成像技术剪切波传播速度肌纤维排列方向肱二头肌　出处：《中国医学影像技术》2013年09期 　论文类型：期刊论文

【摘要】：目的探讨探头扫查平面与肱二头肌肌纤维走行方向夹角对剪切波传播速度的影响。方法随机选取健康志愿者20名。采用实时剪切波弹性成像技术,探头方向与肌纤维方向夹角分别为0°、30°、60°、90°,测量距体表深度1.7cm、2.5cm处同一位点的剪切波传播速度,并进行统计学分析。结果深度为1.7cm和2.5cm,剪切波传播方向与肌纤维夹角为0°、30°、60°、90°时,剪切波传播速度差异均有统计学意义(P均0.05)。分别取剪切波方向与人体肌纤维排列的夹角为0°、30°、60°、90°时,不同深度剪切波传播速度差异无统计学意义(P均0.05)。结论探头扫查平面与肌纤维走行方向夹角影响剪切波的传播速度,深度相同时,随着剪切波传播方向与人体肌纤维排列方向夹角增大,剪切波速度有递减趋势。传播方向一致时,剪切波在人体肱二头肌中的传播速度与深度无明显关系。
[Abstract]:Objective to investigate the effect of the angle between the scanning plane of the probe and the walking direction of biceps brachii muscle fiber on the velocity of shear wave propagation. Methods Twenty healthy volunteers were randomly selected and the real time shear wave elastic imaging technique was used. The angle between the probe direction and the muscle fiber direction was 0 掳/ 30 掳/ 60 掳/ 90 掳, respectively. The velocity of shear wave propagation was measured at the same point 2.5 cm from the depth of body surface (1.7 cm). The results were as follows: the depth was 1.7 cm and 2.5 cm, and the angle between the direction of shear wave propagation and muscle fiber was 0 掳, 30 掳and 60 掳and 90 掳. There were significant differences in the propagation velocities of shear waves (P < 0.05). When the angle between the direction of shear wave and human muscle fibers was 0 掳~ 30 掳~ 60 掳~ 90 掳. There was no significant difference in propagation velocity of shear wave between different depth (P < 0.05). Conclusion the angle between the scanning plane and the walking direction of muscle fiber affects the propagation velocity of shear wave, when the depth is the same. With the increase of the angle between the direction of shear wave propagation and the direction of arrangement of human muscle fibers, the velocity of shear wave decreases. When the propagation direction is the same, the propagation velocity of shear wave in the biceps brachii muscle has no obvious relationship with the depth.
【作者单位】：华中科技大学同济医学院附属同济医院超声影像科;
【分类号】：R33
【正文快照】： 超声弹性成像技术已越来越广泛地应用于乳腺[1]、甲状腺[2]、肝脏[3-4]、前列腺[5]等疾病的诊断和研究。传统的弹性成像采用助力式弹性成像技术,即沿探头轴向对组织施加一定压力,使之产生形变。声辐射力脉冲(acoustic radiation force impulse,ARFI)成像是一种新的弹性成像技

【相似文献】