Sökning: "pulmonary artery"

Visar resultat 1 - 5 av 12 uppsatser innehållade orden pulmonary artery.

  1. 1. Phase Unwrapping MRI Flow Measurements

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen Vi3

    Författare :Mio Liljeblad; [2023]
    Nyckelord :phase unwrapping; computer vision; cine MRI; NMR; flow measurements; velocity encoding; venc; energy minimization; magnetic resonance; cardiac MRI; sinotubuar junction; pulmonary artery; ascending descending aorta; laplacian algorithm; iterative graph cuts; IGC; sequential tree-reweighted message passing; TRW-S; velocity to noise ratio; VNR; retrospective wrapping; energy formulation;

    Sammanfattning : Magnetic resonance images (MRI) are acquired by sampling the current of induced electromotiveforce (EMF). EMF is induced due to flux of the net magnetic field from coherent nuclear spins with intrinsic magnetic dipole moments. LÄS MER

  3. 2. Comparison of direct Fick's principle and thermodilution for calculating cardiac output in patients with pulmonary arterial hypertension.Does the assessment of cardiac index and pulmonary vascular resistance differ depending on which method is chosen?

    Master-uppsats, Örebro universitet/Institutionen för hälsovetenskaper

    Författare :Gabriella Persson; [2023]
    Nyckelord :Pulmonary arterial hypertension; cardiac output; direct Fick´s principle; thermodilution;

    Sammanfattning : Pulmonary arterial hypertension (PAH) is an uncommon but serious disease that causes increased pressure in the pulmonary vessels and increased pulmonary vascular resistance (PVR), which in turn leads to right heart failure. At diagnosis, mean pulmonary artery pressure (mPAP) must be >20 mmHg, pulmonary artery wedge pressure (PAWP) ≤15 mmHg and PVR >2 Wood units (WU). LÄS MER

  4. 3. RIGHT VENTRICULAR STROKE WORK INDEX MED EKOKARDIOGRAFI HOS PATIENTER MED PULMONELL ARTERIELL HYPERTENSION, EN JÄMFÖRELSE MED HÖGERSIDIG HJÄRTKATETERISERING.

    Kandidat-uppsats, Malmö universitet/Fakulteten för hälsa och samhälle (HS)

    Författare :Amajla Fatic; [2021]
    Nyckelord :Echocardiography; pulmonary arterial hypertension; right heart catheterization; right ventricular stroke work index; Ekokardiografi; högersidig hjärtkateterisering; pulmonell arteriell hypertension; right ventricular stroke work index;

    Sammanfattning : Pulmonell hypertension (PH) är en sjukdom med flera olika etiologier som bidrar till ett förhöjt tryck i lungkretsloppet. PH definieras som ett medelartärtryck i lungpulsådern   25mm Hg i vila uppmätt vid högersidig hjärtkateterisering (RHC). De olika orsakerna till PH delas in i fem grupper. LÄS MER

  5. 4. Pulmonary Response During Exercise: an Invasive Study on Mean Pulmonary Artery Pressure in Relation to Cardiac Output

    Magister-uppsats, Örebro universitet/Institutionen för hälsovetenskaper

    Författare :Fredrik Edbom; [2021]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. Assessment of hemodynamic parameters using 4D Flow MRI

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Mattias Andersson; [2018]
    Nyckelord :Hemodynamics; Hemodynamic Parameters; 4D Flow; 4D Flow MRI; Blood flow; Cardiac Disease; Heart Disease; MRI; Magnetic Resonance Imaging; Visualisation; Mathematics and Statistics;

    Sammanfattning : Heart disease is one of the worldwide leading causes of death, and facilitating the work of physicians in this area is therefore of great importance. Imaging of the heart is one of many fields that is used for diagnosis and analysis of cardiac disease. LÄS MER