Sökning: "arterial blood"

Visar resultat 16 - 20 av 377 avhandlingar innehållade orden arterial blood.

  1. 16. Blood pressure in atrial fibrillation

    Författare :Joakim Olbers; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Introduction: Hypertension is a leading risk factor for cardiovascular morbidity and premature death. Prevalence of hypertension in the adult population in Sweden has been estimated to 27%. Atrial fibrillation (AF) is the most prevalent sustained arrhythmia of clinical relevance with an estimated prevalence of at least 2.9% among adults in Sweden. LÄS MER

  3. 17. Immobilization as a risk factor for arterial and venous thrombosis

    Författare :Karin Arinell; Ole Frøbert; Kjeld Christensen; Tal Hörer; Joakim Alfredsson; Örebro universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Venous thrombosis; arterial thrombosis; atherosclerosis; cystatin C; cholesterol; platelet activation; platelet aggregation; immobilization;

    Sammanfattning : Aim: Immobilization and a sedentary lifestyle are correlated with an elevated risk of both arterial and venous thrombosis. The goal of this research was to investigate whether markers associated with cardiovascular disease risk are altered during long term immobilization in a human model and in the brown bear, which survives annual cycles of long-term immobilization. LÄS MER

  4. 18. WAVELET NOISE REDUCTION AND VASCULAR WATER TRANSPORT MODELLING : APPLICATIONS TO DIFFUSION AND PERFUSION MRI

    Författare :Adnan Bibic; Lund Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; cerebral blood flow; perfusion; diffusion; arterial spin labelling; wavelets; filtering; denoising; blood-brain barrier; permeability; Fysicumarkivet A:2018:Bibic;

    Sammanfattning : Magnetic resonance imaging (MRI) is a powerful medical imaging technique, used to detect and characterise a range of diseases and conditions. It is based on the use of a strong static magnetic field in combination with magnetic field gradients and pulsed radiofrequency electromagnetic fields to visualise various organs and structures in the body according to their morphology or function. LÄS MER

  5. 19. On Aortic Blood Flow Simulations : Scale-Resolved Image-Based CFD

    Författare :Jonas Lantz; Matts Karlsson; Shawn Shadden; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis focuses on modeling and simulation of the blood flow in the aorta, the largest artery in the human body. It is an accepted fact that abnormal biological and mechanical interactions between the blood flow and the vessel wall are involved in the genesis and progression of cardiovascular diseases. LÄS MER

  7. 20. Turbulence Descriptors in Arterial Flows : Patient-Specific Computational Hemodynamics

    Författare :Magnus Andersson; Matts Karlsson; Jonas Lantz; Tino Ebbers; Kristian Valen-Sendstad; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : At this very moment, there are literally millions of people who suffer from various types of cardiovascular diseases (CVDs), many of whom will experience reduced quality of life or premature lift expectancy. The detailed underlying pathogenic processes behind many of these disorders are not well understood, but were abnormal dynamics of the blood flow (hemodynamics) are believed to play an important role, especially atypical flow-mediated frictional forces on the intraluminal wall (i. LÄS MER