Scientists have established the first reference ranges for healthy heart responses during exercise using a technique called Exercise Cardiac MRI (exCMR). Published in Radiology: Cardiothoracic Imaging, this research, led by the computational cardiac imaging group at the LMS, could enhance early diagnosis of heart disease by clarifying what constitutes a normal versus abnormal heart reaction to physical activity.
The study involved live cardiac imaging of 161 healthy individuals aged 22 to 77 while they exercised on a modified bike inside an MRI machine. The team discovered that men’s hearts respond more vigorously to exercise than women’s, even after accounting for body size—a critical insight for accurate diagnosis.
The exCMR allows clinicians to observe the heart under stress, revealing conditions that might go unnoticed during rest. Professor Declan O’Regan, head of the research group, explained, “Young people or those in early stages of heart disease often compensate at rest, but exercise uncovers their true risk.”
Previously, the lack of reference ranges hindered widespread adoption of exCMR. This study provides those benchmarks, making the test more interpretable and actionable for clinicians. The technique is safe, cost-effective, and now better understood, paving the way for broader use in clinics globally.
By defining healthy exercise responses, this research marks a significant step toward integrating exCMR into routine practice. Earlier and more accurate diagnoses could transform outcomes for heart disease patients, aligning with broader goals to bridge research and clinical application for better healthcare solutions.
Add comment