Search for dissertations about: "cerebrovascular resistance"

Showing result 1 - 5 of 10 swedish dissertations containing the words cerebrovascular resistance.

2. 1. 4D flow MRI and modelling to assess cerebral arterial hemodynamics : method development and evaluation, with implementation in patients with symptomatic carotid stenosis

   Author : Madelene Holmgren; Anders Eklund; Jan Malm; Anders Wåhlin; Sara Qvarlander; Ronnie Wirestam; Umeå universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; 4D flow MRI; carotid stenosis; cerebral blood flow; cerebral arterial compliance; cerebrovascular resistance; circleof Willis; computational fluid dynamics; magnetic resonance imaging; stroke; vascular disease; Neurology; neurologi;

   Abstract : Blood flow measurements are important for understanding the development of cerebrovascular diseases. With 4D flow magnetic resonance imaging (4D flow MRI), simultaneous velocity measurements are obtained in all cerebral arteries in a scan of about ten minutes. However, 4D flow MRI is a relatively new technique. READ MORE

4. 2. STRENGTH TRAINING AFTER STROKE: EFFECTS ON MUSCLE FUNCTION, GAIT PERFORMANCE AND PERCEIVED PARTICIPATION

   Author : Ulla-Britt Flansbjer; Geriatrik; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; neuropsychology; neurophysiology; Reproducibility; Neurology; Rehabilitation; sceletal; Muscle; Cerebrovascular Accident; Gait; Neurologi; neuropsykologi; neurofysiologi;

   Abstract : The overall aim of this thesis was to evaluate the effects of strength training on muscle function, gait performance and perceived participation in subjects with chronic mild to moderate post-stroke hemiparesis. A main impairment after stroke is reduced muscle strength. READ MORE

5. 3. Vascular Dysfunction in Stroke and CADASIL

   Author : Anna Stenborg; Lars Lind; Andreas Terent; Toste Länne; Uppsala universitet; []
   Keywords : Internal medicine; stroke; CADASIL; endothelium; vasodilation; Invärtesmedicin;

   Abstract : Cerebrovascular disease (CVD) is strongly linked to hypertension and generally occurs later in life than coronary artery disease (CAD). Three quarters of the patients with symptomatic CVD are above 65 years of age. The risk factors are the same for CVD and CAD, but the relative importance of the vascular risk factors differs greatly. READ MORE

6. 4. Cerebral arterial pulsatility imaging using 4D flow MRI : methodological development and applications in brain aging

   Author : Tomas Vikner; Anders Wåhlin; Anders Eklund; Jan Malm; Lars Nyberg; Susanne Schnell; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Magnetic resonance imaging; 4D flow MRI; medical image analysis; cerebral hemodynamics; arterial pulsatility; DCE MRI; blood-brain barrier; white matter lesions; perivascular spaces; cerebral small vessel disease; hippocampus; cognition; aging; biomedicinsk strålningsvetenskap; Biomedical Radiation Science;

   Abstract : 4D flow magnetic resonance imaging (MRI) is increasingly recognizedas a versatile tool to assess arterial and venous hemodynamics. Cerebral arterial pulsatility is typically assessed by analyzing flow waveforms over the cardiac cycle, where flow amplitude is a function of cardiac output, central arterial stiffness, and cerebrovascular resistance and compliance. READ MORE

7. 5. Cardiovascular mortality and morbidity in hypopituitary patients and metabolic effects of growth hormone treatment

   Author : Birgitta Bulow; Lund Medicin; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; glucose metabolism; growth hormone replacement; growth hormone deficiency; long-term survival; craniopharyngioma; cardiovascular risk factors; Hypopituitarism; cardiovascular mortality; Endocrinology; secreting systems; diabetology; Endokrinologi; sekretion; diabetologi;

   Abstract : Premature atherosclerosis, cardiovascular risk factors and increased cardiovascular mortality have been shown in patients with hypopituitarism on conventional hormone treatment, but without growth hormone (GH) replacement. The aims of paper I-III were to investigate separately the risks for cerebrovascular and cardiac mortality as well as the incidence of cardiovascular disease in patients with hypopituitarism and to assess the long-term prognosis for patients with craniopharyngioma. READ MORE