University of East Anglia Apr 23 2026 Thousands of patients sent for vital heart scans may be undergoing unnecessary first-line tests that fail to deliver clear answers - according to new research from the University of East Anglia. A new study finds that more than one in three heart ultrasounds are either unclear or cannot diagnose the patient's disease requiring doctors to repeat tests or send patients for more invasive - and expensive - follow‑up scans. Researchers analysed results from more