Essays about: "Volymtomografi"

Found 3 essays containing the word Volymtomografi.

1. 1. Deep Learning-based Regularizers for Cone Beam Computed Tomography Reconstruction

   University essay from KTH/Matematisk statistik

   Author : Sabina Syed; Josefin Stenberg; [2023]
   Keywords : Adversarial Convex Regularization; Computer Vision; Cone Beam Computed Tomography; Convolutional Neural Networks; Deep Learning; Image Reconstruction; Adversarial Convex Regularization; Bildrekonstruktion; Datorseende; Djupinlärning; Faltningsnätverk; Volymtomografi;

   Abstract : 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. READ MORE

3. 2. GPU Monte Carlo scatter calculations for Cone Beam Computed Tomography

   University essay from KTH/Numerisk analys, NA

   Author : Jonas Adler; [2014]
   Keywords : ;

   Abstract : 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. READ MORE

4. 3. Non-local means denoising ofprojection images in cone beamcomputed tomography

   University essay from KTH/Matematisk statistik

   Author : Fredrik Dacke; [2013]
   Keywords : ;

   Abstract : 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. READ MORE