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在7T心肌梗塞的大型动物模型中的心脏功能:基于深度学习的自动细分增加了可重现性
Alena Kollmann1, David Lohr2, Markus J Ankenbrand3
1Comprehensive Heart Failure Center (CHFC), Chair of Molecular and Cellular Imaging, University Hospital Würzburg, Würzburg, Germany.
Scientific reports
|May 14, 2024
概括
一个深度学习模型改进了心脏磁共振 (CMR) 图像分割,用于临床前的7特斯拉数据. 这提高了动物研究中心脏功能分析的准确性和可重复性.
科学领域:
- 心血管成像 - 心血管成像
- 医学图像分析 医学图像分析
- 人工智能在医学中的应用
背景情况:
- 心脏磁共振 (CMR) 成像对于非侵入性心脏功能量化至关重要.
- 精确的心肌细分对于CMR分析至关重要,但当前的临床软件在临床前和超高强度场数据 (例如,7特斯拉) 上扎.
- 临床前研究通常需要专门的细分方法,因为与人类临床数据相比,图像采集和特征的差异.
研究的目的:
- 适应和重新训练已建立的深度学习 (DL) 模型用于心肌细分.
- 通过使用临床前7特斯拉CMR数据,提高心脏功能分析的速度和可重复性.
- 评估重新训练的DL模型在临床前环境中对手动细分的性能.
主要方法:
- 一个最初为人类CMR细分开发的深度学习模型,使用772个手动标记的临床前7张特斯拉CMR图像从11只猪身上进行了重新训练.
- 然后,重新训练的模型在一个单独的288张图像上进行了测试.
- 为了比较,评估了手动细分的观察者间和观察者内部变异性.
主要成果:
- 重新训练的DL模型表现出与手动细分对关键心脏功能参数的优异一致.
- 射出分数 (EF) 分析显示皮尔森的r为0.95,Intraclass相关系数 (ICC) 为0.97,变化系数 (CoV) 为6.6%.
- 细分精度很高,Dice分数为0.88的左心室和0.84的心肌.
结论:
- 在临床前的7特斯拉数据上重新训练一个以人为中心的DL模型,显著提高了心肌细分的准确性.
- 调整后的DL模型在临床前CMR研究中为心脏功能分析提供了更快,更可重复的方法.
- 这种方法克服了超高强度临床前成像现有临床软件的局限性.
相关概念视频
Anatomy of the Heart
The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
Anatomy of the Heart
The heart is a hollow, muscular organ approximately the size of a fist, consisting of four chambers. It is enclosed in the pericardium, a fibrous sac with two layers: the visceral and parietal pericardium, separated by a fluid-filled space containing serous fluid to reduce friction.
The heart has three layers: the innermost endocardium, the muscular myocardium, and the outer epicardium, all working together for optimal cardiac function.
Chambers of the Heart
The heart is made up of four...
The heart has three layers: the innermost endocardium, the muscular myocardium, and the outer epicardium, all working together for optimal cardiac function.
Chambers of the Heart
The heart is made up of four...

