Although heart disease is the leading cause of death in the United States, a significant portion of people who experience heart attacks are unaware that they have the underlying condition. Cleerly, a cardiovascular imaging startup, hopes to fix this. By analyzing CT scans of the heart, the company’s AI software aims to identify early-stage coronary artery disease, similar to how mammograms and colonoscopies detect breast and colon cancer. “The majority of people who will die of heart disease and...