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논문 기본 정보

자료유형
학술저널
저자정보
Yang Jinho (Department of Radiology Konkuk University Medical Center Konkuk University School of Medicine Seoul Korea.) Lee Subin (Laboratory for Imaging Science and Technology Department of Electrical and Computer Engineering Seoul National University Seoul Korea.) Moon Yeonsil (Department of Neurology Konkuk University Medical Center Konkuk University School of Medicine Seoul Korea.) Lee Jongho (Laboratory for Imaging Science and Technology Department of Electrical and Computer Engineering Seoul National University Seoul Korea.) Moon Won-Jin (Department of Radiology Konkuk University Medical Center Konkuk University School of Medicine Seoul Korea.)
저널정보
대한자기공명의과학회 Investigative Magnetic Resonance Imaging Investigative Magnetic Resonance Imaging 제27권 제2호
발행연도
2023.6
수록면
84 - 92 (9page)
DOI
10.13104/imri.2023.0002

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Purpose: Diabetes mellitus (DM) is implicated in the pathogenesis of iron dysregulation and Alzheimer’s disease. We aimed to evaluate whether the presence of DM and status of cognitive impairment affect cortical iron accumulation in older adults, as quantified by the susceptibility measurements using the deep neural network QSMnet+. Materials and Methods: In this retrospective analysis of a prospective cohort, 50 patients with normal cognition with or without subjective memory impairment (controls), 49 with early mild cognitive impairment (MCI), and 43 with late MCI were evaluated. We employed QSMnet+ to compute a quantitative susceptibility map and FreeSurfer 6.0 to obtain anatomical labels. The effects of MCI and DM on cortical susceptibility and volume were evaluated using a two-way analysis of covariance. Results: Whole-cortex susceptibility differed according to MCI (p < 0.001) but not according to DM (p = 0.554), with higher values in the early and late MCI groups than in the control group. MCI and the DM status showed a significant interaction in the whole cortex (p = 0.023). Among the patients with early MCI, those with DM exhibited higher cortical susceptibility than those without DM, whereas those with late MCI showed no such difference. Cortical susceptibility did not correlate with the cortical volume in patients with DM and inversely correlated with the cortical volume in patients without DM. Only disease status (p = 0.008) and DM (p = 0.023) were independent predictors of whole-cortex susceptibility, after correcting for covariates. Conclusion: Our findings demonstrated that cognitive impairment and DM are linked to alterations in cortical susceptibility in older adults. This observation suggests that cortical iron accumulation results from the combined effects of DM and neurodegenerative processes related to the cognitive status.

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