Sökning: "Radiosurgery"

Visar resultat 6 - 10 av 16 uppsatser innehållade ordet Radiosurgery.

  1. 6. Post-processingof Monte Carlo calculated dose distributions

    Master-uppsats, KTH/Matematisk statistik

    Författare :Linn Öström; [2019]
    Nyckelord :;

    Sammanfattning : This Master Thesis focuses on denoising of Monte Carlo calculated dose distributions of radiosurgery treatment plans. The objective of this project is to implement a Denoising Autoencoder (DAE) and investigate its denoising performance when it has been trained on Monte Carlo calculated dose distributions generated with lower number of photon showers. LÄS MER

  3. 7. Feasibility of Life Cycle Assessment for Complex Medical Devices

    Master-uppsats, KTH/Medicinteknik och hälsosystem

    Författare :Sofia Svensson; [2017]
    Nyckelord :Life cycle assessment; LCA; feasibility; environment; complex medical device; Leksell Gamma Knife Icon; Livscykelanalys; LCA; genomförbarhet; miljö. komplex medicinteknisk produkt; Leksell Gamma Knife Icon;

    Sammanfattning : The interest in environmental issues is increasing and for this reason, assessing the potential environmental impacts of a product or system is of interest. A methodology developed for this particular purpose is the life cycle assessment, also known as LCA. LÄS MER

  4. 8. Spectroscopic Study of Radiation around the Leksell Gamma Knife for Room Shielding Applications

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

    Författare :Alexis Hubert; [2017]
    Nyckelord :Gamma Knife; Elekta; spectra; spectroscopic; radiation; Monte Carlo; shielding;

    Sammanfattning : Any center planning to install a Gamma Knife radiosurgery unit has to provide for an efficient shielding of the treatment room, to protect the patient, the staff and the public, against undesired radiation. The shielding barrier design is controlled by national and international recommendations; the reference documents for gamma ray radiotherapy facilities are the National Council on Radiation Protection and Measurements (NCRP) reports 49 and 151. LÄS MER

  5. 9. Segmentation of Cone Beam CT in Stereotactic Radiosurgery

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

    Författare :Awais Ashfaq; [2016]
    Nyckelord :Cone Beam CT; Convolutional Neural Networks; Image Segmentation; Leksell Gamma Knife Icon; Deep Learning.; Cone Beam CT; neurala nätverk baserade på faltning; bildsegmentering; Leksell Gamma Knife Icon; Djup inlärning.;

    Sammanfattning : C-arm Cone Beam CT (CBCT) systems – due to compact size, flexible geometry and low radiation exposure – inaugurated the era of on-board 3D image guidance in therapeutic and surgical procedures. Leksell Gamma Knife Icon by Elekta introduced an integrated CBCT system to determine patient position prior to surgical session, thus advancing to a paradigm shift in facilitating frameless stereotactic radiosurgeries. LÄS MER

  7. 10. Dynamic treatment with Leksell Gamma Knife Perfexion - A relaxed path sector duration optimization

    Master-uppsats, KTH/Optimeringslära och systemteori

    Författare :Rikard Karlander; [2015]
    Nyckelord :;

    Sammanfattning : Stereotactic radiosurgery is an increasingly popular method for treating brain tumours and lesions. The Leksell Gamma Knife Perfexion by Elekta is one of the leading instruments for stereotactic radiosurgery. LÄS MER