Commentary|Videos|September 25, 2026

What New CT and MRI Research May Reveal About Bone Loss, Diabetes and Cognitive Decline

Author(s)Jeff Hall

In a recent interview, Shadpour Demehri, MD, discussed new research examining connections between deep learning assessment of bone mineral density on chest CT, brain MRI data and the potential for enhanced risk stratification in patients with diabetes.

A recently published secondary analysis of the prospective Multi-Ethnic Study of Atherosclerosis (MESA) revealed striking findings between deep learning assessment of vertebral bone mineral density (vBMD) and regional associations with white matter hyperintensity (WMH) and fractional anisotropy (FA).

However, lead study author Shadpour Demehri, MD, said the key message with the study findings was providing more clarity with the timing of events in multisystem degeneration and the potential for improved risk stratification in vulnerable populations.

“ … You can come up with some sort of chronological cascade sequencing of events and putting together these findings in context, (you can) see what type of patients or what sub-population are at the high risk of multisystem degeneration together, which one could come earlier and basically could precede the second one. In this case, it was bone and brain,” noted Dr. Demehri, a professor of radiology and orthopedic surgery at Johns Hopkins University in Baltimore.

A particularly pertinent finding from the study, which was recently published in Radiology, was the significantly pronounced association between lower vBMD and WMH in patients with diabetes. There was an approximately five percent faster accumulation of WMH among those with lower vBMD and diabetes in contrast to those without diabetes, according to the study.

“One corner of this triangle is bone density, the other one is brain degeneration, and the third one is diabetes. So diabetes is a root cause — or we call metabolic syndrome as part of a bigger picture — that can impact both bone and brain. In this case, it happens that we could detect signal in bone earlier than the brain degeneration, and that shows to us that if the patient comes with metabolic syndrome and abnormal bone, that raises the flag that this patient's brain could be at jeopardy,” explained Dr. Demehri.

(Editor’s note: For related content, see “Study Links AI BMD Assessment on Chest CT to Faster Cognitive Decline and White Matter Changes on Brain MRI,” “Brain MRI Study Reveals Higher Brain Age Gap and White Matter Hyperintensity for Those in Disadvantaged Neighborhoods” and “Emerging CT Research Suggests Possible Correlation Between Subclinical Emphysema and Vertebral Bone Loss.”)


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