Essays about: "bildregistrering"

Showing result 1 - 5 of 11 essays containing the word bildregistrering.

1. 1. Respiratory Motion Correction in PET Imaging: Comparative Analysis of External Device and Data-driven Gating Approaches

   University essay from KTH/Fysik

   Author : Nina Lindström Söraas; [2023]
   Keywords : PET CT; Tomographic reconstruction; Respiratory gating techniques; Image registration; Motion correction; PET CT; Tomografisk rekonstruktion; Gating tekniker; Bildregistrering; Rörelsekorrigering;

   Abstract : Positron Emission Tomography (PET) is pivotal in medical imaging but is prone to artifactsfrom physiological movements, notably respiration. These motion artifacts both degradeimage quality and compromise precise attenuation correction. READ MORE

3. 2. Hypoxic Target Volume Determination in PET/CT Imaging : The Impact of Deformable Image Registration

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Viktor Rosenberg; [2022]
   Keywords : Positron emission tomography; image registration; hypoxic tumour volume; dose escalation; tumour control probability;

   Abstract : Using a tailored dose distribution for personalized radiotherapy with the help of positron emission tomography (PET) might give an edge for successful tumour elimination. One of the main determinants for tumour radioresistance in several solid tumours has been investigated as hypoxia, including head and neck cancer (HNC). READ MORE

4. 3. Deformable registration when combining brachytherapy and external beam radiotherapy

   University essay from KTH/Medicinsk avbildning

   Author : Lisa Mach; [2021]
   Keywords : ;

   Abstract : Patients with cervical cancer are treated both with external beam radiotherapy(EBRT) and brachytherapy (BT) which involves an applicator. During the treatments, CT-images are taken and to perform dose calculations, deformable image registration (DIR) is performed. READ MORE

5. 4. Deformable image registration using anatomical landmarks in tubular structures

   University essay from KTH/Medicinteknik och hälsosystem

   Author : Jenny Wingqvist; [2021]
   Keywords : Medical image analysis; radiation therapy; deformable image registration; anatomical landmarks; bronchial tree; vascular tree;

   Abstract : Cancer is one of the leading causes of death in the world, but advances in research and development of treatment methods is constantly ongoing to reduce the number of deaths and the amount of suffering. One of many approaches is radiation therapy, which uses high doses of radiation to kill tumors. READ MORE

6. 5. Deep Learning Based Deformable Image Registration of Pelvic Images

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Blanca Cabrera Gil; [2020]
   Keywords : Deep Learning; Medical Imaging; Image Registration; Pelvic Images; MR; CT;

   Abstract : Deformable image registration is usually performed manually by clinicians,which is time-consuming and costly, or using optimization-based algorithms, which are not always optimal for registering images of different modalities. In this work, a deep learning-based method for MR-CT deformable image registration is presented. READ MORE