计算机断层扫描在深度学习中的有效剂量和图像质量 密集护理患者的图像重建与代算法相比
Emilio Quaia1, Elena Kiyomi Lanza de Cristoforis1, Elena Agostini1
1Department of Radiology, University of Padova, Via Giustiniani 2, 35128 Padova, Italy.
概括
深度学习图像重建 (DLIR) 显著降低CT有效剂量和图像噪声,同时改善了ICU患者的信号噪声比,与传统方法相比. 这种先进的CT成像技术提高了在较低辐射水平的诊断质量.
科学领域:
- 放射学和医学成像学 医学成像学
- 医疗保健中的人工智能
- 诊断成像技术 诊断成像技术
背景情况:
- 深度学习图像重建 (DLIR) 使用卷积神经网络 (CNN) 来进行CT图像重建.
- DLIR的目标是达到非常低的噪音水平,即使在减少辐射剂量时也是如此.
- 目前的CT重建方法包括过后投影 (FBP) 和代重建 (IR).
研究的目的:
- 评估DLIR是否降低了重症监护室 (ICU) 患者的CT有效剂量 (ED).
- 为了比较DLIR和FBP/IR算法之间的CT图像质量,特别是噪声和信号噪声比 (SNR).
- 评估DLIR在临床ICU环境中的整体性能.
主要方法:
- 连续30天内接受对比度增强的胸部/腹部CT扫描的ICU患者的回顾性分析.
- 用DLIR重建的扫描与FBP或IR算法 (ADMIRE,AIDR 3D) 的比较.
- 使用威尔科克森测试 (p < 0.05) 的辐射ED,图像噪声和SNR的统计比较.
主要成果:
- 与FBP相比,DLIR显著降低了有效剂量 (ED) (18.45 ± 13.16 mSv与22.06 ± 9.55 mSv相比,p < 0.05).
- 与FBP,ADMIRE和AIDR3D相比,DLIR显著降低了图像噪声 (8.45 ± 3.24对比14.85 ± 2.73,14.77 ± 32.77,11.17 ± 32.77,p < 0.05).与FBP,ADMIRE和AIDR3D相比,DLIR显著降低了图像噪声 (8.45 ± 3.24对比14.85 ± 2.73,14.77 ± 32.77,11.17 ± 32.77,p < 0.05).
- 与FBP,ADMIRE和AIDR3D相比,DLIR显著增加了SNR (11.53 ± 9.28与3.99 ± 1.23,5.84 ± 2.74,3.58 ± 2.74,p <0.05).与FBP,ADMIRE和AIDR3D相比,DLIR显著增加了SNR (11.53 ± 9.28与3.99 ± 1.23,5.84 ± 2.74,3.58 ± 2.74,p <0.05).
结论:
- 对于ICU患者来说,DLIR提供了降低的CT有效剂量.
- 通过减少噪声和增加SNR,DLIR显著提高了CT图像质量.
- DLIR代表了CT重建的宝贵进步,以提高重症监护机构的诊断准确性.
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