新兴的基于深度学习的MR图像重建算法的对腹部MRI放射性特征的影响
Hailong Li, Vinicius Vieira Alves1, Amol Pednekar
1Department of Radiology, Cincinnati Children's Hospital Medical Center.
Journal of computer assisted tomography
|August 27, 2024
概括
与传统方法相比,深度学习 (DL) 重建改变了MRI放射性特征. DL算法对放射性特征的具体影响在不同器官和组织之间有很大差异.
科学领域:
- 放射学 放射学是一门学科.
- 医疗成像医学成像
- 人工智能在医学中的应用
背景情况:
- 放射性特征是从医学图像中获得的定量成像生物标志物.
- 基于深度学习 (DL) 的重建技术正在出现,以更快地获得MRI.
- DL重建对放射性特征的影响尚未完全理解.
研究的目的:
- 评估基于DL的MRI重建技术对放射性特征的影响.
- 将DL重建 (SmartSpeed和SmartSpeed-SuperRes) 与传统重建 (C-SENSE) 进行比较.
- 评估这种影响在不同器官和组织中的变异性.
主要方法:
- 来自17名受试者的潜在采集低样本T2加权腹部MRI图像.
- 使用传统的C-SENSE和基于DL的SmartSpeed和SmartSpeed-SuperRes.Res进行重建.
- 从8个感兴趣区域 (ROI) 提取86个放射性特征.
- 在重建方法之间计算皮尔森相关系数 (PCC) 和类内相关系数 (ICC).
- 通过ANOVA分析评估器官/组织特异性影响.
主要成果:
- 与C-SENSE相比,SmartSpeed重建显示了50/86特征的高相关性 (PCC ≥0.8) 和58/86特征的高一致性 (ICC ≥0.75).
- 与C-SENSE相比,SmartSpeed-SuperRes的相关性 (15/86特征) 和一致性 (9/86特征) 显著较低.
- 肌肌肉受到SmartSpeed的影响最大;肝脏受到SmartSpeed-SuperRes的影响最大.
- ANOVA证实DL重建影响在器官/组织之间有显著的变化 (P < 0.001).
结论:
- 与传统技术相比,基于深度学习的MRI重建显著改变了放射性特征.
- 变化的程度因特定的DL算法和所检查的器官/组织而异.
- 需要进一步的研究,以了解这些变化对放射学应用的临床影响.
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