了解混因素可以准确地解释ElastQ的肝硬度测量,这是一个新的2D剪切波弹性成像技术
David Jm Bauer1, Annalisa De Silvestri2, Laura Maiocchi3
1Division of Gastroenterology and Hepatology, Medical University of Vienna, Vienna, Austria.
概括
振动控制的短暂弹性图形 (VCTE) 和二维剪切波弹性图形 (2D-SWE) 肝硬度测量之间的差异随着疾病的严重程度而增加. 体重指数和皮肤到肝脏囊距离对VCTE的影响更大,对ElastQ 2D-SWE的影响更小.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 医疗成像医学成像
- 诊断技术 诊断技术
背景情况:
- 肝硬度测量 (LSM) 对于评估肝纤维化和慢性肝病至关重要.
- 建议使用振动控制的短暂弹性图形 (VCTE) 和二维剪切波弹性图形 (2D-SWE) 的LSM技术.
- 在VCTE和2D-SWE之间数值结果的分歧需要对2D-SWE的混因素和可靠性标准进行调查.
研究的目的:
- 系统地调查新型ElastQ 2D-SWE技术的混因素和可靠性标准.
- 为了比较VCTE和ElastQ 2D-SWE之间的LSM结果.
- 确定影响VCTE-LSM和ElastQ-LSM之间的差异的因素.
主要方法:
- 在三个欧洲高等教育中心招募参与者的前景.
- 使用VCTE和ElastQ 2D-SWE.配对的LSM采集.
- 记录患者人口统计 (性别,年龄,BMI),肝病病因,实验室标记,VCTE-LSM,受控衰减参数 (CAP),两个LSM的四分位数范围/中位数,以及皮肤到肝脏的囊距离.
主要成果:
- 包括840名参与者;中位数年龄57岁,中位数BMI为25.4kg/m2.
- VCTE-LSM和ElastQ-LSM之间的差异随着肝硬度和疾病严重程度标志物的增加而增加.
- 身体质量指数 (BMI) 和皮肤到肝脏囊距离影响VCTE-LSM比ElastQ-LSM更大,增加了测量不一致性.
结论:
- ElastQ-LSM和VCTE-LSM之间的差异与肝硬度和疾病严重程度的增加有关.
- 体重指数和皮肤到肝脏的囊距离有助于差异,对ElastQ-LSM的影响较小.
- 作为ElastQ-LSM的可靠性标准,建议四分位数区间/中位数比率≤30%.
相关概念视频
Ultrasound II: Endoscopic Ultrasound and FibroScan
88
Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):
Endoscopic Ultrasound (EUS):
88
Strain and Elastic Modulus
3.5K
The quantity that describes the deformation of a body under stress is known as strain. Strain is given as a fractional change in either length, volume, or geometry under tensile, volume (also known as bulk), or shear stress, respectively, and is a dimensionless quantity. The strain experienced by a body under tensile or compressive stress is called tensile or compressive strain, respectively. In contrast, the strain experienced under bulk stress and shear stress is known as volume and shear...
3.5K
Hooke's Law
362
Hooke's law, a pivotal principle in material science, establishes that the strain a material undergoes is directly proportional to the applied stress, defined by a factor called the modulus of elasticity or Young's modulus.
362


