Sökning: "PET CT"

Visar resultat 6 - 10 av 52 uppsatser innehållade orden PET CT.

  1. 6. 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

  3. 7. Lesion Segmentation in 3D FDG-PET/CT Scans Using Deep Learning

    Master-uppsats, Uppsala universitet/Institutionen för informationsteknologi

    Författare :Adam Maen; [2022]
    Nyckelord :;

    Sammanfattning : Drug development is an expensive, long and complex process for pharmaceutical companies all around the world. One way to make it more reliable is to evaluate the drug at its early stages, so the decision can be made to go forward or move to another drug, which is also a time-consuming and costly task to be done by human experts. LÄS MER

  4. 8. 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

  5. 9. Kvantifiering av basala ganglier och parotiskörtlar i 11C PE2I-PET/DT : -Samband mellan dysfunktion av autonoma nervsystemet och kroppens körtlar

    Master-uppsats, Uppsala universitet/Institutionen för kirurgiska vetenskaper

    Författare :Seyedeh Hourieh Mir Bazel; [2021]
    Nyckelord :Neurodegenerative Diseases; Autonomic Dysfunction; 11CPE2I-PET CT; Parotid Glands; Basal Ganglia; Neurodegenerativa sjukdomar; Autonom dysfunktion; 11CPE2I-PET DT; parotiskörtlar; basala ganglier;

    Sammanfattning : SAMMANFATTNING Bakgrund: Vid hjärnundersökningar finns även andra strukturer utanför hjärnan som är innerverade av nervsystemet. Det är möjligt att sjukdomen i hjärnan avspeglas där också. Det finns många sjukdomar och tillstånd med liknande symptom och att ställa rätt diagnos kan vara svårt. LÄS MER

  7. 10. Quantification of cerebral blood flow with 15O-water PET : A comparison study between PET/CT and PET/MR and two different blood sampling instruments

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för fysik; Umeå universitet/Diagnostisk radiologi

    Författare :Amanda Eriksson; [2021]
    Nyckelord :Cerebral Blood Flow; CBF; oxygen-15-labelled water; PET CT; PET MR; Quantification of CBF; Image Derived Input Function; IDIF; Blood Sampled Input Function; BSIF; Arterial Input Function; AIF; Tracer Kinetic Modelling; Single Tissue Compartmental Model; 1TCM;

    Sammanfattning : Cerebral blood flow quantification is a vital diagnostic tool for disease monitoring and used for diagnosing a variation of pathological conditions. The human brain requires roughly about 20 % of the total cardiac output to sustain normal functioning, hence the perfusion of blood is an important factor to deliver oxygenated blood. LÄS MER