Search for dissertations about: "Colour Doppler Ultrasound"

Showing result 1 - 5 of 11 swedish dissertations containing the words Colour Doppler Ultrasound.

  2. 1. Aspects on Imaging and Endovascular Treatment of Aortic Dissection and Aneurysm

    Author : Mats-Ola Eriksson; Rickard Nyman; Anders Wanhainen; Johnny Steuer; Mårten Falkenberg; Uppsala universitet; []
    Keywords : Aneurysms; aorta; stents; ultrasound; colour Doppler; vascular; interventional; aortic dissection; complicated; TEVAR; EVAR; re-intervention; survival; thrombosis; false lumen; aortic remodelling; Radiology; Radiologi;

    Abstract : Aortic aneurysm and dissections are potentially life threatening conditions. The advent of endovascular aortic repair (EVAR) and thoracic endovascular aortic repair (TEVAR) has reduced perioperative mortality and morbidity and are now established therapy methods for treatment of aortic disease. READ MORE

  4. 2. On cardiac flow quantification with ultrasound colour doppler

    Author : Joakim Brandberg; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : This thesis deals with the estimation of blood flow in the heart and larger vessels where control-volume methods are applied using ultrasound Doppler technique. In particular two control-volume techniques were investigated: The proximal isovelocity surface area method, (PISA) and the Surface Integration of Velocity Vectors method, (SIVV). READ MORE

  5. 3. Power Doppler - Principles and Potential Clinical Applications

    Author : Anders Nilsson; PG Lindgren; Torbjörn Andersson; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiology; Ultrasonography; Doppler studies; Power Doppler; Volume flow; Radiologisk forskning; Radiological research; Radiologisk forskning;

    Abstract : The purpose of this work was to: a) Determine whether the amount of colour in a power Doppler image is dependent on the angle between the examined vessel and the soundbeam and/or on the velocity of the flow within the vessel; b) Investigate if a dependency on flow velocity could be used for the detection of volume flow differences and c) Define clinical applications utilising the improved sensitivity to low flow of PD.In the experimental studies (study I and II) a silicon tube in a water bath was insonated, the insonation angle and the volume flow changed and the resulting images stored, transferred to a personal computer and analysed with regard to the amount of colour present in the image. READ MORE

  6. 4. Contrast enhanced transrectal ultrasound of the prostate : An experimental and clinical study

    Author : Else Krüger Hagen; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Oncology; Transrectal ultrasound; Onkologi; Oncology; Onkologi; radiologi; Radiology;

    Abstract : The purpose of this thesis was to evaluate the diagnostic potential of a new ultrasound contrast agent,SonazoidTM, intended for use in patients with suspicion of prostate cancer.The sonographic appearance of normal prostatic vascularity in dogs was evaluated before and after injection of Sonazoid,using different Doppler flow detection modes. READ MORE

  7. 5. Effects of physical exercise on coronary and peripheral vascular function. An integrative physiological study from rat to man

    Author : Ulrika Hägg Samuelsson; Göteborgs universitet; []
    Keywords : exercise; endothelial function; coronary flow velocity reserve; colour Doppler echocardiography; oxidative stress; gene expression; stiffness; ultrasound biomicroscopy;

    Abstract : Physical exercise is beneficial for the cardiovascular health. Numerous epidemiological studies reveal that physical activity reduces the risk of cardiovascular related death. Nevertheless, the underlying vessel wall specific physiological and molecular mechanisms still remain incompletely understood. READ MORE