The primary aim of this thesis is to investigate vascular and structural neuroimaging findings in migraine to ultimately identify possible causes for the well-known increased risk of structural... Show moreThe primary aim of this thesis is to investigate vascular and structural neuroimaging findings in migraine to ultimately identify possible causes for the well-known increased risk of structural brain lesions. To this purpose, we used advanced MRI techniques in migraine patients, retinal vasculopathy with cerebral leukoencephalopathy and systemic manifestations (RVCL-S) patients and controls to evaluate vascular function. Moreover, we evaluated structural brain changes in repetitive hemiplegic migraine attacks. Secondary aim of this thesis is to describe the neuroimaging findings in a large Dutch cohort of RVCL-S patients of different ages. Show less
The overarching theme throughout this thesis is the exploration of new and the improvement of existing methods of measuring neurovascular pathology using MRI techniques and postprocessing. As... Show moreThe overarching theme throughout this thesis is the exploration of new and the improvement of existing methods of measuring neurovascular pathology using MRI techniques and postprocessing. As cerebrovascular afflictions are not located at a single location, these methods are applied throughout the cerebrovascular tree. This thesis starts with the large (macro) arteries (chapter 2), to the function of (micro) arteries (chapters 3 and 4), to remnants of hemorrhages in brain tissue (chapter 5), to finally the venous compartment (chapter 6), and takes into account both structure and function of selected parts of the cerebrovascular tree. Show less
Oussoren, F.K.; Schermer, T.R.; Leeuwen, R.B. van; Bruintjes, T.D. 2023
Vascular involvement in the pathophysiology of idiopathic sudden sensorineural hearing loss (iSSNHL) has been previously proposed. The objective of this study was to perform a systematic review of... Show moreVascular involvement in the pathophysiology of idiopathic sudden sensorineural hearing loss (iSSNHL) has been previously proposed. The objective of this study was to perform a systematic review of the current literature and conduct meta-analyses to evaluate associations between cardiovascular risk factors, cerebral small vessel disease, and subsequent stroke after presentation with iSSNHL. Three systematic literature reviews and meta-analyses were conducted using PubMed, Embase, and CINAHL. All studies investigating associations between iSSNHL and the cardiovascular risk factors: body mass index (BMI), diabetes mellitus, hyperlipidemia, hypertension, medical history of myocardial infarction (MI), smoking, the degree of white matter hyperintensities, and incidence of stroke were included. Adhering to the PRISMA guidelines, two independent reviewers reviewed the articles and assessed risk of bias. The cardiovascular risk factors of abnormal BMI, diabetes, hypertension, total cholesterol, low-density lipoprotein cholesterol, and a medical history of MI were significantly associated with iSSNHL. The adjusted hazard ratio of a higher degree of white matter hyperintensities was 0.70 (95% CI 0.44, 1.12). Patients with iSSNHL showed a higher risk of stroke compared to controls, with hazard ratios ranging from 1.22 up to 4.08. Several cardiovascular risk factors are more frequently present in patients with iSSNHL than in the general population. The degree of white matter hyperintensities does not appear to be increased in patients with iSSNHL, while the risk of stroke following ISSNHL is increased. Prospective studies with larger study populations are needed to confirm the associations between generalized cardiovascular disease and iSSNHL and to assess whether these patients benefit from cardiovascular risk management to prevent future cardiovascular and cerebrovascular disease. Show less
