Sökning: "Stereotactic radiosurgery"

Hittade 5 uppsatser innehållade orden Stereotactic radiosurgery.

  1. 1. Gamma Knife treatment planning with new degrees of freedom

    Master-uppsats, KTH/Optimeringslära och systemteori

    Författare :Emil Norell; [2019]
    Nyckelord :Stereotactic radiosurgery; Leksell Gamma Knife®; inverse planning; clustering; optimization; column generation; Stereotaktisk radiokirurgi; strålkniven; inversplanering; klustring; optimering; kolumn-generering;

    Sammanfattning : The Leksell Gamma Knife® is an instrument designed for high precision treatment of tumours and lesions located in the brain and upper spine. Today, the radioactive cobalt-60 sources can only move linearly along the radiation unit, but the machine could be modified to include rotational motion as well. LÄS MER

  2. 2. 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

  3. 3. 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

  4. 4. 3D/2D Image Registration for Patient Positioning in Stereotactic Radiosurgery

    Master-uppsats, KTH/Skolan för datavetenskap och kommunikation (CSC)

    Författare :Simon Hössjer; [2015]
    Nyckelord :3D 2D; Image Registration; Radiosurgery;

    Sammanfattning : In the application of stereotactic radiosurgery for treatment of brain tumors it is imperative that patients are positioned with sub-millimetre accuracy so as to not damage surrounding healthy tissue during treatment. We investigate how feasible the technique of digitally reconstructed radiographs is as a registration method for patient positioning in this type of high-accuracy application. LÄS MER

  5. 5. Dose-Volume Histogram Prediction using KernelDensity Estimation

    Master-uppsats, KTH/Skolan för datavetenskap och kommunikation (CSC)

    Författare :JOHANNA SKARPMAN MUNTER; [2014]
    Nyckelord :;

    Sammanfattning : Dose plans developed for stereotactic radiosurgery are assessed by studying so called Dose-Volume Histograms. Since it is hard to compare an individual dose plan with doseplans created for other patients, much experience and knowledge is lost. LÄS MER