SUMMARY
The research interests of Firat Kara, Ph.D., include neuroimaging in aging and dementia, women's brain health in neurodegenerative diseases, and sex differences that influence Alzheimer's disease risk and progression. In particular, his work examines how surgical menopause and menopausal hormone therapies influence disease trajectories from preclinical stages through Alzheimer's dementia.
Dr. Kara uses advanced imaging techniques to study the Alzheimer's disease continuum and multiple sclerosis (MS). He uses magnetic resonance imaging (MRI), magnetic resonance spectroscopy (MRS), diffusion MRI, resting‑state functional MRI and ultra‑high‑field MRI, integrating these approaches with molecular positron emission tomography (PET), blood‑based biomarkers and cognitive measures. Through these methods, his research characterizes neurochemical, microstructural and inflammatory changes that drive neurodegenerative and neuroinflammatory conditions. He also investigates the neurobiological impact of premenopausal bilateral oophorectomy, postmenopausal brain changes, vasomotor symptoms and menopausal hormone therapies on brain structure and metabolism.
Focus areas
- Image-guided decoding of pathological mechanisms in Alzheimer's disease. Dr. Kara and his colleagues in radiology and neurology aim to identify pathological mechanisms across the Alzheimer's disease continuum using advanced imaging techniques, including diffusion tensor imaging, MRS, resting‑state functional MRI and PET imaging. Their work demonstrates that MRS‑based biomarkers are associated with blood-based Alzheimer's disease biomarker burden across the disease continuum.
- Menopausal hormone therapy and brain health in postmenopausal women. Using MRI, PET, cognitive assessments and blood‑based Alzheimer's disease biomarkers, Dr. Kara and his colleagues explore the long‑term effects of short-term menopausal hormone therapies in recently postmenopausal women.
- Early bilateral oophorectomy and brain health assessment using imaging biomarkers. Dr. Dr. Kara and his colleagues investigate the long‑term brain health consequences of surgical menopause due to bilateral salpingo‑oophorectomy (BSO) using multimodal neuroimaging, including structural MRI, diffusion MRI, resting‑state functional MRI and PET. His team works to define the biological pathways linking BSO to later neurodegenerative risk. The overarching goal is to determine how BSO before natural menopause accelerates brain aging and Alzheimer's‑related neuroimaging biomarkers, and to inform risk stratification and the potential intervention windows for women who undergo surgical menopause.
- Imaging biomarkers of MS. Dr. Kara collaborates with a multidisciplinary team of clinical and translational researchers at Mayo Clinic, using MRS and PET imaging to study the biological mechanisms that drive MS. The team has shown that inflammatory biomarkers measured with MRS reflect the inflammatory burden detected with PET imaging, highlighting their potential as noninvasive markers of disease activity.
Significance to patient care
Alzheimer's disease can be present for many years before memory loss or other symptoms appear. Dr. Kara uses advanced brain scans and blood tests to look for early changes in the brain as people age. He also studies how menopause, hormone therapy and the early removal of both ovaries may affect brain health over time.
This research helps healthcare professionals find people who may be at risk of Alzheimer's disease, offer follow‑up sooner and provide more-personalized care. Dr. Kara also uses similar brain‑imaging tools in MS to better understand how the disease develops and to help guide future treatment studies.
Professional highlights
- Department of Radiology Travel Grant, Mayo Clinic, 2025.
- Review editor, Editorial board, Imaging and Diagnostic Tools for Dementia, Frontiers in Dementia, 2023-2025.
- CMRR Imaging Conference Travel Award, Center for Magnetic Resonance Research, University of Minnesota, 2019.
- FWO Postdoctoral Fellowship, Research Foundation — Flanders, 2014-2017.
- BOF Research Grant, Bijzonder Onderzoeksfonds, 2016-2018.
- SAO‑FRA Research Grant, Alzheimer Research Foundation, 2014-2016.
- European Mobility Program Award, European Commission, 2007-2008.