Coronary Calcium Scans Reveal Hidden Health Risks Beyond Heart Disease

Coronary artery calcium (CAC) CT scans are proving to be essential tools in assessing not only future heart disease risk but also uncovering other potential health issues in patients. A recent study from researchers at Intermountain Health in Salt Lake City highlights that these minimally invasive scans are effective in identifying various medical conditions, some of which may be life-threatening.

The study involved analyzing the results from the Intermountain CorCal clinical trial, which randomized 2,284 patients who were otherwise healthy and asymptomatic. Participants underwent CAC CT scans to evaluate plaque buildup in their arteries. The findings revealed that approximately 8.5% (247 patients) had additional significant medical findings unrelated to heart disease.

Dr. Brent Muhlestein, co-director of research at Intermountain Medical Center, noted, “In nearly one in 10 of these kinds of heart scans, we’re finding other possible medical issues. They could be nothing, as many abnormalities on these kinds of scans are. But they could be something more significant.”

Among the 247 patients with additional findings, more than half exhibited lung abnormalities. Issues were also identified in various organs, including the esophagus, liver, kidneys, and breast tissue. This broad spectrum of findings emphasizes the potential utility of CAC CT scans beyond just evaluating heart health.

Significant Findings and Emergency Interventions

The implications of these findings are substantial. Of the patients with additional issues, two-thirds were referred for follow-up care. Alarmingly, 23 patients were diagnosed with thoracic aortic aneurysms, a critical condition characterized by bulges in the aorta. One patient presented with an aneurysm measuring eight centimeters, leading to an urgent surgical intervention within a week.

Dr. Muhlestein expressed confidence in the study’s impact, stating, “We’re confident in saying we’ve saved at least one life through this study and that this tool may be useful in other preventive ways.” The research findings were presented at the American Heart Association Scientific Sessions 2025 in New Orleans.

This study builds on previous research indicating that CAC CT scans can effectively identify patients who may benefit from statin medications to protect heart health. However, Dr. Muhlestein cautioned against drawing definitive conclusions about the necessity of follow-up care for every patient flagged by the scans.

Future Directions in Preventive Health

While the results are promising, the study does not clarify whether all patients recommended for additional care truly required it. Dr. Muhlestein emphasized the importance of further investigation into these findings: “These findings don’t show whether every patient who was recommended for follow-up care needed it. But the findings from our study are significant enough that it’s worth asking that question.”

As the medical community continues to explore the broader applications of CAC CT scans, this research underscores the potential for these scans to serve as a preventive health tool, identifying critical health issues that may otherwise go unnoticed. The study sets the stage for future inquiries into the role of coronary calcium imaging in comprehensive patient care.