Cardiac MRI allows for a comprehensive assessment of myocardial structure,
function, and tissue characteristics. Here we describe a foundational vision
system for cardiac MRI, capable of representing the breadth of human
cardiovascular disease and health. Our deep learning model is trained via
self-supervised contrastive learning, by which visual concepts in cine-sequence
cardiac MRI scans are learned from the raw text of the accompanying radiology
reports. We train and evaluate our model on data from four large academic
clinical institutions in the United States. We additionally showcase the
performance of our models on the UK BioBank, and two additional publicly
available external datasets. We explore emergent zero-shot capabilities of our
system, and demonstrate remarkable performance across a range of tasks;
including the problem of left ventricular ejection fraction regression, and the
diagnosis of 35 different conditions such as cardiac amyloidosis and
hypertrophic cardiomyopathy. We show that our deep learning system is capable
of not only understanding the staggering complexity of human cardiovascular
disease, but can be directed towards clinical problems of interest yielding
impressive, clinical grade diagnostic accuracy with a fraction of the training
data typically required for such tasks.

基于自监督对比学习的深度学习模型通过学习心脏核磁共振扫描伴随的放射学报告的原始文本中的视觉概念，展示了对人类心血管疾病和健康的全面评估；我们的模型在美国的四个大型学术临床机构的数据上训练和评估，并在英国 BioBank 和其他两个公开可用的外部数据集上展示了卓越的性能，实现了包括左心室射血分数回归和 35 种不同病症（如心脏淀粉样变及肥厚型心肌病）的诊断等一系列任务，显示出对人类心血管疾病的复杂性的理解能力，并在仅需要一部分通常用于这种任务的训练数据的情况下，实现了令人印象深刻的临床级诊断准确率。