Sökning: "Volymtomografi"
Hittade 3 uppsatser innehållade ordet Volymtomografi.
1. Deep Learning-based Regularizers for Cone Beam Computed Tomography Reconstruction
Master-uppsats, KTH/Matematisk statistikSammanfattning : Cone Beam Computed Tomography is a technology to visualize the 3D interior anatomy of a patient. It is important for image-guided radiation therapy in cancer treatment. During a scan, iterative methods are often used for the image reconstruction step. LÄS MER
2. GPU Monte Carlo scatter calculations for Cone Beam Computed Tomography
Master-uppsats, KTH/Numerisk analys, NASammanfattning : A GPU Monte Carlo code for x-ray photon transport has been implemented and extensively tested. The code is intended for scatter compensation of cone beam computed tomography images. The code was tested to agree with other well known codes within 5% for a set of simple scenarios. LÄS MER
3. Non-local means denoising ofprojection images in cone beamcomputed tomography
Master-uppsats, KTH/Matematisk statistikSammanfattning : A new edge preserving denoising method is used to increase image quality in cone beam computed tomography. The reconstruction algorithm for cone beam computed tomography used by Elekta enhances high frequency image details, e.g. noise, and we propose that denoising is done on the projection images before reconstruction. LÄS MER