制定初步培训和评估计划,用于手动下肢肌肉MRI细分
Jasper M Morrow1,2, Sachit Shah3, Lara Cristiano4,5
1Department of Neuromuscular Diseases, Queen Square UCL Institute of Neurology, London, UK.
European radiology experimental
|July 26, 2024
概括
开发了一个新的训练计划,用于MRI下肢肌肉细分. 它建立了可靠性基准,显示八名新观察员中有六名在定量肌肉MRI生物标志物方面取得了专家水平的表现.
科学领域:
- 神经肌肉疾病 神经肌肉疾病
- 医疗成像医学成像
- 生物标志物开发 生物标志物开发
背景情况:
- 磁共振成像 (MRI) 对肌内脂肪的量化是神经肌肉疾病的关键生物标志物.
- 手动肌肉细分是自动化方法的基础.
- 人类和机器学习细分需要可靠性基准.
研究的目的:
- 开发一个训练计划,用于MRI下肢肌肉细分.
- 对于新观察者来说,展示手动细分的能力.
- 为未来的细分工作建立可靠性基准.
主要方法:
- 一个培训计划包括手册,直接指导和八个下肢MRI扫描.
- 评估使用了测试重复测试扫描与间扫描和间观察者可靠性指标.
- 用Sørensen-Dice相似系数确定了能力基准.
主要成果:
- 在8名新观察员中,有6名获得了与经验丰富的观察员可比的可靠性.
- 建立了基准:Sørensen-Dice >0.87 (大腿) 和>0.92 (小牛) 个体肌肉.
- 大兴趣地区 (ROI) 的可靠性明显高于小ROI.
结论:
- 开发和分析了第一个手动下肢肌肉细分的正式培训计划.
- 大的ROI对于脂肪分数的评估比小的ROI更可靠.
- 确定的能力基准对于神经肌肉疾病中的定量肌肉MRI生物标志物至关重要.
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