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  

Impact of the angle between probe scanning plane and muscle fiber orientation on shear wave velocity

作　　者：张隽[1] 邓又斌[1] 黄媛[1] 汤乔颖[1] 邓琪[1] 

机构地区：[1]华中科技大学同济医学院附属同济医院超声影像科,湖北武汉430030

出　　处：《中国医学影像技术》2013年第9期1497-1499,共3页Chinese Journal of Medical Imaging Technology

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。Objective To observe the impact of the angle between the probe scanning plane and the muscle fiber orienta- tion on shear wave velocity in normal biceps brachii. Methods A total of 20 healthy volunteers were included in the study. Real-time shear wave elastography was employed. With probe taken the angle of 0°, 30°, 60° and 90° to the muscle fiber o- rientation, the propagation velocities of shear wave at the depth of 1.7 cm and 2.5 cm to the body surface were measured respectively, and the results were statistically analyzed. Results At the depth of 1.7 cm and 2.5 cm, there were all statis- tical differences of shear wave propagation velocities with the probe taken the angle of 0° , 30°, 60 ° and 90° to the muscle fi- ber orientation （all P（0.05）. With the probe taken the angle of 0°, 30°, 60° and 90° to the muscle fiber orientation, when measured shear wave propagation velocities at different depths （1.7 cm and 2.5 cm）, the differences were not statistically significant （all P〉0.05）. Conclusion The angle between the probe scanning plane and the muscle fiber orientation may affect shear wave velocity. The propagation velocity of shear wave reduces with the increase of the angle between the direc- tion of propagation of shear wave and skeletal muscle fiber orientation at the same depth. However, shear wave propagation velocity in the human biceps brachii has no relationship with the depth to the body surface in the same propagation direc- tion.

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 

分 类 号：R33[医药卫生—人体生理学] R445.1[医药卫生—基础医学]