Sökning: "4D-CT"

Hittade 3 uppsatser innehållade ordet 4D-CT.

  1. 1. Semi-Automatic Analysis and Visualization of Cardiac 4D Flow CT

    Master-uppsats, Linköpings universitet/Institutionen för hälsa, medicin och vård

    Författare :Anthony van Oosten; [2022]
    Nyckelord :4D CT; CT; 4D flow; Flow Component Analysis; Singular value decomposition; left atrial appendage; LAA; CFD; 3 chamber view; computed tomography; maximum outflow velocity; volume rendered CT; semi-automatic; visualization; flow visualization; cardiac views; semi-automatic analysis; semi-automatic visualization; visualization of 4D flow;

    Sammanfattning : The data obtained from computational fluid dynamics (CFD) simulations of blood flow in the heart is plentiful, and processing this data takes time and the procedure for that is not straightforward. This project aims to develop a tool that can semi-automatically process CFD simulation data, which is based on 4D flow computed tomography (CT) data, with minimal user input. LÄS MER

  3. 2. A comparative treatment planning study of radiotherapy of clinical liver- and stomach-cancer cases with either photon or proton beams

    Master-uppsats, Stockholms universitet/Fysikum

    Författare :Gracinda Mondlane; [2014]
    Nyckelord :;

    Sammanfattning : There has been an increasing interest in proton beam therapy (PBT) in recent years related to the advantageous depth-dose characteristics of proton beams compared to what is achievable with standard external photon beam radiotherapy (RT). With PBT, improved target dose conformity can be achieved together with a reduction in the dose to the organs at risk (OARs). LÄS MER

  4. 3. "Imaging with CBCT and 4D-CT of objects moving with respiratory motions"

    Master-uppsats, Medicinsk strålningsfysik (tills m KI); Fysikum

    Författare :Elias Lindbäck; [2012]
    Nyckelord :Medical Physicist; Radiotherapy; SBRT; CBCT; 4D-CT; Sjukhusfysik; Strålbehandling; SBRT; CBCT; 4D-CT;

    Sammanfattning : AB S TRACT purpose : To further investigate the effects of respiratory motions on CBCT imaging, as well as 4D-CT examinations, with a future goal of using obtained results to implement new methods for individual margins and daily matching procedures into routine clinical practice. background : Since the implementation of CBCT combined with modern accelerators, a higher degree of accuracy has been made possible in RT. LÄS MER