相关实验视频
Updated: Jul 20, 2025
09:30
Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease
Published on: December 18, 2016
19.6K
脏和副脊髓肌肉的表面扩散系数 (ADC) 测量的变量:一个单一中心的大队列研究
Yukun Chen1, Panpan Yang1, Caixia Fu2
1Department of Radiology, Changhai Hospital of Shanghai, Naval Medical University, Shanghai, 200433, China.
Heliyon
|July 31, 2023
概括
副脊髓肌肉是比脏更可靠的参考器官,可以在腹部扩散权重成像 (DWI) 中使明显扩散系数 (ADC) 的测量正常化. 这一发现提高了ADC肌肉和ADC脏评估的一致性.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 扩散加权成像是一种扩散加权成像.
背景情况:
- 扩散加权成像 (DWI) 对于腹部成像至关重要.
- 表面扩散系数 (ADC) 测量需要正常化才能准确解释.
- 在ADC测量的变化可能会影响诊断可靠性.
研究的目的:
- 为了评估明显扩散系数 (ADC) 在脏 (ADC脏) 和副脊髓肌肉 (ADC肌肉) 中测量的变异性.
- 确定最佳的参考器官来规范腹部DWI的ADC值.
主要方法:
- 分析了来自1243名患者的腹部DWI数据,这些数据来自两个MRI扫描仪 (GE和西门子).
- 测量ADC脏和ADC肌肉,每次检查使用四个感兴趣的区域.
- 评估观察者间,扫描器间和扫描器内部 (可重复性) 的变化.
主要成果:
- 在两种扫描仪中,ADC肌肉显示出明显较低的可变性和比ADC脏更好的重复性和可比性.
- 布兰德-阿尔特曼分析显示,与ADC脏相比,ADC肌肉的协议极限较小.
- 对ADC肌肉的变化系数 (CV) 始终低于对ADC脏的变化系数 (p < 0.001).
结论:
- 副脊椎肌肉作为一个更稳定和可靠的参考器官,用于正常化腹部DWI ADC测量.
- 在临床实践中,利用副脊髓肌肉可以提高ADC肌肉和ADC脏评估的一致性和准确性.
相关概念视频
01:11Variability: Analysis
158
Measures of variability are statistical metrics that reveal the dispersion pattern within a dataset. They are pivotal in biostatistics, providing insights into the heterogeneity within health and biological data. Variability signifies the degree to which data points diverge from one another, helping researchers understand the potential range of values and associated uncertainty within the data.
The range is a simple measure of variability, indicating the difference between the highest and...
The range is a simple measure of variability, indicating the difference between the highest and...
158
01:21Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation
17
Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
17