摘要
目的研究声束平行于肌纤维(纵切面)和声束垂直于肌纤维(横切面)时肱二头肌的杨氏模量值差异。方法 141例男性志愿者,年龄16～34岁,平均22岁,均无上肢外伤史、重症肌无力、进行性肌营养不良、周期性瘫痪、代谢性肌病等病史。使用法国Supersonic Imagine公司的AixPlore型实时定量剪切波超声弹性成像超声诊断仪,L4-15线阵探头。探头平行于肱二头肌肌纤维(纵切面)和垂直于肱二头肌肌纤维(横切面)时分别测量肱二头肌杨氏模量值并进行比较。结果松弛状态下,肱二头肌纵切面杨氏模量值为(45.658±13.479)kPa,横切面杨氏模量值为(7.334±1.612)kPa,差异有统计学意义(P=0.0000);收缩状态下,肱二头肌纵切面杨氏模量值为(123.658±31.392)kPa,横切面杨氏模量值为(13.261±4.045)kPa,差异有统计学意义(P=0.0000)。结论肱二头肌纵切面杨氏模量值明显大于横切面杨氏模量值;肱二头肌弹性模量的各向异性,提示在检查心肌、肾脏等组织结构具有各向异性的脏器时,应注意到超声检查切面角度可能会影响其杨氏模量测量值大小;横切面检查和纵切面检查相结合也许能为疾病的诊断提供更多的信息和依据。
Objective To assess the elastic modulus difference of the ultrasonic beam parallel to the biceps brachii fiber(longitudinal section)and the ultrasonic beam perpendicular to the biceps brachii fibers(cross section).Methods A total of 141 male volunteers aged 16 to 34 years (mean 22 years old),who had no history of upper extremity trauma,myasthenia gravis,progressive muscular dystrophy,periodic paralysis and metabolic myopathy were included in the study.A shear-waveelasto-sonography (AixPlorer model,Supersoni...
出处
《中华医学超声杂志（电子版）》
2011年第5期1039-1047,共9页
Chinese Journal of Medical Ultrasound(Electronic Edition)
关键词
超声检查
定量
骨骼肌
各向异性
Ultrasonography
Quantitative
Skeletal muscle
Anisotropy
