Browsing NTNU Open by Author "Vangberg, Torgil Riise"
Now showing items 1-9 of 9
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Anatomical variations in the circle of Willis are associated with increased odds of intracranial aneurysms: The Tromsø study
Hindenes, Lars Bakke; Ingebrigtsen, Tor; Isaksen, Jørgen Gjernes; Håberg, Asta; Johnsen, Liv-Hege; Herder, Marit; Mathiesen, Ellisiv B.; Vangberg, Torgil Riise (Peer reviewed; Journal article, 2023)Purpose Studies on patients suggest an association between anatomical variations in the Circle of Willis (CoW) and intracranial aneurysms (IA), but it is unclear whether this association is present in the general population. ... -
Both brain size and biological sex contribute to variation in white matter microstructure in middle-aged healthy adults
Eikenes, Live; Visser, Eelke; Vangberg, Torgil Riise; Håberg, Asta (Peer reviewed; Journal article, 2022)Whether head size and/or biological sex influence proxies of white matter (WM) microstructure such as fractional anisotropy (FA) and mean diffusivity (MD) remains controversial. Diffusion tensor imaging (DTI) indices are ... -
Cerebral cortical dimensions in headache sufferers aged 50-66 years: a population-based imaging study in the Nord-Trondelag Health Study (HUNT-MRI)
Husøy, Andreas Kattem; Håberg, Asta Kristine; Rimol, Lars Morten; Hagen, Knut; Vangberg, Torgil Riise; Stovner, Lars Jacob (Journal article; Peer reviewed, 2019)Based on previous clinic-based magnetic resonance imaging studies showing regional differences in the cerebral cortex between those with and without headache, we hypothesized that headache sufferers have a decrease in ... -
Five years of exercise intervention at different intensities and development of white matter hyperintensities in community dwelling older adults, a Generation 100 sub-study
Arild, Anette; Vangberg, Torgil Riise; Nikkels, Hanne; Lydersen, Stian; Wisløff, Ulrik; Stensvold, Dorthe; Håberg, Asta (Peer reviewed; Journal article, 2022)We investigated if a five-year supervised exercise intervention with moderate-intensity continuous training (MICT) or high-intensity interval training (HIIT) versus control; physical activity according to national guidelines, ... -
How Does the Accuracy of Intracranial Volume Measurements Affect Normalized Brain Volumes? Sample Size Estimates Based on 966 Subjects from the HUNT MRI Cohort
Hansen, Tor Ivar; Brezova, Veronika; Eikenes, Live; Håberg, Asta; Vangberg, Torgil Riise (Peer reviewed; Journal article, 2015)BACKGROUND AND PURPOSE: The intracranial volume is commonly used for correcting regional brain volume measurements for variations in head size. Accurate intracranial volume measurements are important because errors will ... -
An incomplete Circle of Willis is not a risk factor for white matter hyperintensities: The Tromsø Study
Hindenes, Lars Bakke; Håberg, Asta Kristine; Mathiesen, Ellisiv B; Vangberg, Torgil Riise (Peer reviewed; Journal article, 2020)Objective The Circle of Willis (CoW) is often underdeveloped or incomplete, leading to suboptimal blood supply to the brain. As hypoperfusion is thought to play a role in the aetiology of white matter hyperintensities ... -
The Effect of Sampling Rate on Resting State Functional MRI
Strømsmo, Brita-Lill Pedersen (Master thesis, 2024)Det har nylig blitt vist at variabiliteten i rs-fMRI (BOLD-variabilitet) kan være en sensitiv indikator på cerebral helse, hvor det er spekulert i om variabiliteten kan være relatert til arteriestivhet. En stor andel av ... -
The effect of white matter hyperintensities on regional brain volumes and white matter microstructure, a population-based study in HUNT
Vangberg, Torgil Riise; Eikenes, Live; Håberg, Asta (Journal article; Peer reviewed, 2019)Even though age-related white matter hyperintensities (WMH) begin to emerge in middle age, their effect on brain micro- and macrostructure in this age group is not fully elucidated. We have examined how presence of WMH and ... -
Variations in the Circle of Willis in a large population sample using 3D TOF angiography: The Tromsø Study
Hindenes, Lars Bakke; Håberg, Asta; Johnsen, Liv-Hege; Mathiesen, Ellisiv B.; David, Robben; Vangberg, Torgil Riise (Peer reviewed; Journal article, 2020)The main arteries that supply blood to the brain originate from the Circle of Willis (CoW). The CoW exhibits considerable anatomical variations which may have clinical importance, but the variability is insufficiently ...