title: Seven-Tesla MRI and neuroimaging biomarkers for Alzheimer's disease.
abstract: The goal of this paper was to review the effectiveness of using 7-T MRI to study neuroimaging biomarkers for Alzheimer's disease (AD). The authors reviewed the literature for articles published to date on the use of 7-T MRI to study AD. Thus far, there are 3 neuroimaging biomarkers for AD that have been studied using 7-T MRI in AD tissue: 1) neuroanatomical atrophy; 2) molecular characterization of hypointensities; and 3) microinfarcts. Seven-Tesla MRI has had mixed results when used to study the 3 aforementioned neuroimaging biomarkers for AD. First, in the detection of neuroanatomical atrophy, 7-T MRI has exciting potential. Historically, noninvasive imaging of neuroanatomical atrophy during AD has been limited by suboptimal resolution. However, now there is compelling evidence that the high resolution of 7-T MRI may help overcome this hurdle. Second, in detecting the characterization of hypointensities, 7-T MRI has had varied success. PET scans will most likely continue to lead in the noninvasive imaging of amyloid plaques; however, there is emerging evidence that 7-T MRI can accurately detect iron deposits within activated microglia, which may help shed light on the role of the immune system in AD pathogenesis. Finally, in the detection of microinfarcts, 7-T MRI may also play a promising role, which may help further elucidate the relationship between cerebrovascular health and AD progression.
authors.affiliation: Departments of 1 Neurosurgery and.
authors.forename: Rohaid
authors.initials: R
authors.lastname: Ali
authors.affiliation: Radiology, Stanford University School of Medicine, Stanford, California.
authors.forename: Maged
authors.initials: M
authors.lastname: Goubran
authors.affiliation: Departments of 1 Neurosurgery and.
authors.forename: Omar
authors.initials: O
authors.lastname: Choudhri
authors.affiliation: Radiology, Stanford University School of Medicine, Stanford, California.
authors.forename: Michael M
authors.initials: MM
authors.lastname: Zeineh
mesh_terms: D000544:Alzheimer Disease / Q000175:diagnosis* / Q000378:metabolism*; D000818:Animals; D015415:Biomarkers / Q000378:metabolism; D006624:Hippocampus / Q000378:metabolism / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D059906:Neuroimaging / Q000379:methods*; D058225:Plaque, Amyloid / Q000378:metabolism* / Q000473:pathology
chemical_list: D015415:Biomarkers
keywords: 7-T MRI; AD = Alzheimer’s disease; Alzheimer’s; CA1 = Cornu Ammonis 1; PiB = Pittsburgh compound B; amyloid plaques; biomarkers; hippocampal atrophy