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Browsing by Author "Sigurdsson, Sigurdur"

Browsing by Author "Sigurdsson, Sigurdur"

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    Assessing cardiovascular risks from a mid-thigh CT image: A tree-based machine learning approach using radiodensitometric distributions 
    Ricciardi, Carlo; Edmunds, Kyle; Recenti, Marco; Sigurdsson, Sigurdur; Gudnason, Vilmundur; Carraro, Ugo; Gargiulo, Paolo (Springer Science and Business Media LLC, 2020-02-18)
    The nonlinear trimodal regression analysis (NTRA) method based on radiodensitometric CT distributions was recently developed and assessed for the quantification of lower extremity function and nutritional parameters in aging subjects. However, the use ...
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    Associations of Pulmonary Function with MRI Brain Volumes : A Coordinated Multi-Study Analysis 
    Frenzel, Stefan; Bis, Joshua C.; Gudmundsson, Elias F.; O'Donnell, Adrienne; Simino, Jeannette; Yaqub, Amber; Bartz, Traci M.; Brusselle, Guy G.O.; Bülow, Robin; DeCarli, Charles S.; Ewert, Ralf; Gharib, Sina A.; Ghosh, Saptaparni; Gireud-Goss, Monica; Gottesman, Rebecca F.; Ikram, M. Arfan; Knopman, David S.; Launer, Lenore J.; London, Stephanie J.; Longstreth, W. T.; Lopez, Oscar L.; Melo van Lent, Debora; O'Connor, George; Satizabal, Claudia L.; Shrestha, Srishti; Sigurdsson, Sigurdur; Stubbe, Beate; Talluri, Rajesh; Vasan, Ramachandran S.; Vernooij, Meike W.; Völzke, Henry; Wiggins, Kerri L.; Yu, Bing; Beiser, Alexa S.; Gudnason, Vilmundur; Mosley, Thomas; Psaty, Bruce M.; Wolters, Frank J.; Grabe, Hans J.; Seshadri, Sudha (2022-11-22)
    BACKGROUND: Previous studies suggest poor pulmonary function is associated with increased burden of cerebral white matter hyperintensities and brain atrophy among elderly individuals, but the results are inconsistent. OBJECTIVE: To study the cross-sectional ...
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    Áhrif menntunar á áhættuþætti og nýgengi æðakölkunarsjúkdóma 
    Andersen, Karl; Aspelund, Thor; Gudmundsson, Elias Freyr; Sigurdsson, Gunnar; Sigurdsson, Sigurdur; Björnsdottir, Gudlaug; Thorsson, Bolli; Sigurdsson, Gunnar; Hardarsson, Thordur; Gudnason, Vilmundur (2022-07-07)
    INNGANGUR Lágt menntunarstig hefur verið tengt óhagstæðri samsetningu áhættuþátta kransæðasjúkdóma. Þessu fylgir aukin áhætta á hjartaáföllum hjá minna menntuðum. Litlar upplýsingar eru til um samband menntunarstigs við alvarleika æðakölkunarsjúkdóma. ...
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    Cognition and brain health among older adults in Iceland : the AGES-Reykjavik study 
    Valsdóttir, Vaka; Magnúsdóttir, Brynja Björk; Chang, Milan; Sigurdsson, Sigurdur; Guðnason, Vilmundur G; Launer, Lenore J.; Jónsdóttir, María Kristín (2022-12)
    The paper aimed to compare how factors previously identified as predictive factors for cognitive decline and dementia related to cognitive performance on the one hand and brain health on the other. To that aim, multiple linear regression was applied ...
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    Incidence of Brain Infarcts, Cognitive Change, and Risk of Dementia in the General Population : The AGES-Reykjavik Study (Age Gene/Environment Susceptibility-Reykjavik Study) 
    Sigurdsson, Sigurdur; Aspelund, Thor; Kjartansson, Ólafur; Gudmundsson, Elias Freyr; Jónsdóttir, María Kristín; Eiríksdóttir, Guðný; Jónsson, Pálmi V; van Buchem, Mark A.; Guðnason, Vilmundur G; Launer, Lenore J. (2017-09)
    BACKGROUND AND PURPOSE: The differentiation of brain infarcts by region is important because their cause and clinical implications may differ. Information on the incidence of these lesions and association with cognition and dementia from longitudinal ...
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    A joint ventricle and WMH segmentation from MRI for evaluation of healthy and pathological changes in the aging brain 
    Atlason, Hans Emil; Löve, Áskell; Robertsson, Vidar; Blitz, Ari M.; Sigurdsson, Sigurdur; Guðnason, Vilmundur G; Ellingsen, Lotta María (2022-09-06)
    Age-related changes in brain structure include atrophy of the brain parenchyma and white matter changes of presumed vascular origin. Enlargement of the ventricles may occur due to atrophy or impaired cerebrospinal fluid (CSF) circulation. The co-occurrence ...
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    SegAE: Unsupervised white matter lesion segmentation from brain MRIs using a CNN autoencoder 
    Atlason, Hans; Love, Askell; Sigurdsson, Sigurdur; Gudnason, Vilmundur; Ellingsen, Lotta María (Elsevier BV, 2019)
    White matter hyperintensities (WMHs) of presumed vascular origin are frequently observed in magnetic resonance images (MRIs) of the elderly. Detection and quantification of WMHs is important to help doctors make diagnoses and evaluate prognosis of their ...