Sökning: "PET CT images"

Visar resultat 1 - 5 av 23 uppsatser innehållade orden PET CT images.

1. 1. Visualizing osteonecrosis of jaws through neutrophil elastase : [11C]NES novel PET tracer

   Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Institutionen för läkemedelskemi

   Författare :Amanda Dannberg; Theodora Martinez; [2023]
   Nyckelord :[11C]NES; HNC; MRONJ; neutrophil granulocytes; ORN; osteonecrosis; PET CT; radiation therapy; [11C]NES; huvud- och halscancer; MRONJ; neutrofila granulocyter; ORN; osteonekros; PET CT; strålbehandling;

   Sammanfattning : Radiation and medical drugs are used to fight head and neck cancer, but unfortunately in some cases these treatments cause development of other diseases and injuries. Osteoradionecrosis (ORN) and medical-related osteonecrosis of the jaw (MRONJ) are dreaded late complications in jaws from radiation therapy and medical drugs and cause great suffering to those affected. LÄS MER

3. 2. Large-scale transfer of lesion segmentations from PET to CT

   Master-uppsats, Uppsala universitet/Institutionen för informationsteknologi

   Författare :Taeyang Choi; [2023]
   Nyckelord :;

   Sammanfattning : The introduction of AI technology has sparked a revolutionary lesion segmentation solution to address challenges in the medical field. After extensive research, the competencies of this technology have been verified. LÄS MER

4. 3. TransRUnet: 2D Detection and Segmentation of Lymphoma Lesions in Full-Body PET-CT Images

   Master-uppsats, KTH/Medicinteknik och hälsosystem

   Författare :Lasse Stahnke; [2023]
   Nyckelord :Lymphoma; PET-CT; Deep Learning; CNN; Retina U-Net; Feature Pyramid Transformer; Detection; Segmentation; Lymfom; PET-CT; djupinlärning; CNN; Retina U-Net; Feature Pyramid Transformer; detektion; segmentering;

   Sammanfattning : Identification and localization of FDG-avid lymphoma lesions in PET-CT image volumes is of high importance for the diagnosis and monitoring of treatment progress in lymphoma patients. This process is tedious, time-consuming, and error-prone, due to large image volumes and the heterogeneity of lesions. LÄS MER

5. 4. Effects of reconstruction parameters on the image quality and quantification of PET images from PET/MRI and PET/CT systems

   Master-uppsats,

   Författare :Ali Amena Hussain; [2022-03-09]
   Nyckelord :Medical physics; PET CT; PET MRI; OSEM; BPL; NEMA IQ; positron emission tomography; magnetic resonance imaging; computed tomography; ordered Subset Expectation Maximization; The Bayesian Penalized Likelihood;

   Sammanfattning : Aim: To study how reconstruction parameters affect the positron emission tomography (PET) image quality and quantitative results for the different lesion to background radioactivity ratios in three different PET systems. Introduction: Multimodality imaging that combines magnetic resonance imaging (MRI) or computed tomography (CT) with a PET system can produce medical images containing both functional and anatomical information. LÄS MER

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

   Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

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

   Sammanfattning : 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). LÄS MER