Sökning: "radiotracer"

Visar resultat 1 - 5 av 8 uppsatser innehållade ordet radiotracer.

  1. 1. 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

  3. 2. Differences in tumor volume for treated glioblastoma patients examined with 18F-fluorothymidine PET and contrast-enhanced MRI

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

    Författare :Karolina Hedman; [2020]
    Nyckelord :PET MRI; positron emission tomography; magnetic resonance imaging; brain tumor; glioblastoma; image segmentation; adaptive thresholding; feature extraction; radiotracer; gadolinium; image processing; image analysis;

    Sammanfattning : Background: Glioblastoma (GBM) is the most common and malignant primary brain tumor. It is a rapidly progressing tumor that infiltrates the adjacent healthy brain tissue and is difficult to treat. Despite modern treatment including surgical resection followed by radiochemotherapy and adjuvant chemotherapy, the outcome remains poor. LÄS MER

  4. 3. Evaluation of Data-Driven Gating for 68Ga-ABY-025 PET/CT in Breast Cancer Patients

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

    Författare :Alain-Klaus Ncuti Nobera; [2020]
    Nyckelord :Data-driven gating; Motion Correction; Affibody molecule; ABY-025; Breast Cancer; HER2; PET CT;

    Sammanfattning : Respiratory motion during PET acquisition degrades image quality. It is mainly the area around the thorax and abdomen which is affected. External devices do provide respiratory gating solutions but are time-consuming to set up on patients and may not always be available. LÄS MER

  5. 4. Investigation of the prognostic value of CT and PET-based radiomic image features in oropharyngeal squamous cell carcinoma

    Master-uppsats, Lunds universitet/Medicinsk strålningsfysik, Lund; Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Mohammed Mosad Said; [2016]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Background Medical data in the form of radiographic routine scans is steadily accumulating. The analysis of such data through automated quantitative methods is believed to produce new information which would allow for more personalization of therapy. The present thesis investigated the use of such methods in head and neck cancer. LÄS MER

  7. 5. A Simple PET Imaging Educational Demonstrator

    Master-uppsats, KTH/Skolan för teknik och hälsa (STH)

    Författare :Shabbir Hussain; [2012]
    Nyckelord :Emission Tomography; PET; Monte Carlo Method; Digital Zubal Phantom; Tumor; Sinogram; Contrast-to-Noise Ratio CNR ; Spatial Resolution;

    Sammanfattning : Recent interests in computer based tools and simulations for PET imaging studies have been a leading source for many new developments. A strong emphasis in these studies has been to improve and optimize the PET scanners for better image quality and quantification of related system parameters. LÄS MER