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A study shows that a non-invasive imaging test can help identify patients with coronary artery blockage or narrowing who need a revascularization procedure. Doctors use coronary CT angiography (CTA) to diagnose narrowed or blocked arteries in the heart. A CTA exam receives a score from mild (0–1) to severe (4–5). Patients with scores above 3 typically require medical treatments. Doctors have traditionally relied on invasive coronary angiography to image vessels and more recently have added fractional flow reserve (FFR) to identify and assess significant blockages. To assess CT-FFR, Dr. Randhawa conducted a retrospective study of patients who underwent coronary CTA...