Lidia Sarro1, Nirubol Tosakulwong2, Christopher G Schwarz3, Jonathan Graff-Radford4, Scott A Przybelski2, Timothy G Lesnick2, Samantha M Zuk3, Robert I Reid5, Mekala R Raman3, Bradley F Boeve4, Tanis J Ferman6, David S Knopman4, Giancarlo Comi7, Massimo Filippi8, Melissa E Murray9, Joseph E Parisi10, Dennis W Dickson9, Ronald C Petersen11, Clifford R Jack3, Kejal Kantarci12. 1. Department of Radiology, Mayo Clinic, Rochester, MN, USA; Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy; Department of Neurology, Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy. 2. Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA. 3. Department of Radiology, Mayo Clinic, Rochester, MN, USA. 4. Department of Neurology, Mayo Clinic, Rochester, MN, USA. 5. Department of Information Technology, Mayo Clinic, Rochester, MN, USA. 6. Department of Psychiatry and Psychology, Mayo Clinic, Jacksonville, FL, USA. 7. Department of Neurology, Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy. 8. Neuroimaging Research Unit, Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy; Department of Neurology, Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy. 9. Department of Neuroscience, Mayo Clinic, Jacksonville, FL, USA. 10. Department of Pathology, Mayo Clinic, Rochester, MN, USA. 11. Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA; Department of Neurology, Mayo Clinic, Rochester, MN, USA. 12. Department of Radiology, Mayo Clinic, Rochester, MN, USA. Electronic address: kantarci.kejal@mayo.edu.
Abstract
INTRODUCTION: Cerebrovascular lesions on MRI are common in Alzheimer's disease (AD) dementia, but less is known about their frequency and impact on dementia with Lewy bodies (DLB). METHODS: White-matter hyperintensities (WMHs) and infarcts on MRI were assessed in consecutive DLB (n = 81) and AD dementia (n = 240) patients and compared to age-matched and sex-matched cognitively normal subjects (CN) from a population-based cohort. RESULTS: DLB had higher WMH volume compared to CN, and WMH volume was higher in the occipital and posterior periventricular regions in DLB compared to AD. Higher WMH volume was associated with history of cardiovascular disease and diabetes but not with clinical disease severity in DLB. Frequency of infarcts in DLB was not different from CN and AD dementia. DISCUSSION: In DLB, WMH volume is higher than AD and CN and appears to be primarily associated with history of vascular disease.
INTRODUCTION:Cerebrovascular lesions on MRI are common in Alzheimer's disease (AD) dementia, but less is known about their frequency and impact on dementia with Lewy bodies (DLB). METHODS: White-matter hyperintensities (WMHs) and infarcts on MRI were assessed in consecutive DLB (n = 81) and AD dementia (n = 240) patients and compared to age-matched and sex-matched cognitively normal subjects (CN) from a population-based cohort. RESULTS: DLB had higher WMH volume compared to CN, and WMH volume was higher in the occipital and posterior periventricular regions in DLB compared to AD. Higher WMH volume was associated with history of cardiovascular disease and diabetes but not with clinical disease severity in DLB. Frequency of infarcts in DLB was not different from CN and AD dementia. DISCUSSION: In DLB, WMH volume is higher than AD and CN and appears to be primarily associated with history of vascular disease.
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