The Study
The Hercules study: A prospective real-world evaluation of screening whole-body MRI (sWB-MRI) for multi-cancer detection and general preventive healthcare.
This study watched people get scanned with a special MRI and saw what cancers it found, but it didn’t randomly assign who got scanned or who didn’t. So we can say, 'People who got scanned had some cancers found early,' but we can’t say the MRI caused them to live longer or healthier lives.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
Doctors used a special MRI scan to check healthy people for hidden cancers and other serious health problems without using radiation.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 524 / 100
Quality score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Finding cancers early might help people live longer, but we don't know yet if this scan actually saves lives or how often it finds true problems.
- 2The scan found cancers and other important health issues in some people.
- 3Follow-up was done 12–18 months later to see if the findings were real.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Journal of Clinical Oncology
Year
2025
Authors
Y. Chodakiewitz, Jeffrey M. Venstrom, Daniel J. Durand, Sean London, Ty Vachon, V. Modi, J. Itri, Amar Patel, Pratik Shingru, Sam Hashemi, Perry P. Kaneriya
Related Content
Claims (10)
Getting a full-body MRI scan to check for problems isn't worth the cost because it often finds harmless things that cause stress and tests, and no one has proven it helps people live longer.
Using a full-body MRI scan might help find cancers in body parts where doctors don’t normally screen people, like without a regular test.
Using a full-body MRI scan to look for cancer early might help find cancer sooner and at an earlier stage, which lets doctors better understand how people get diagnosed over time.
Doctors are testing a full-body scan that can find many types of cancer at once, and they’re using it on both people who pay for it themselves and those who get it for free, to see if rich and poor people are being detected differently.
Using a full-body MRI scan on people who feel fine might help doctors find hidden cancers or other serious health problems early, especially when they use special rules to decide what needs follow-up.
Doctors are testing whether full-body MRI scans can reliably spot cancer by checking how often they correctly find it (and don’t miss it), using agreed-upon rules to interpret the images.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.