Sökning: "radiotherapy treatment planning"

Visar resultat 6 - 10 av 67 uppsatser innehållade orden radiotherapy treatment planning.

1. 6. Increasing the Efficiency of CyberKnife Cancer Treatments by Faster Robot Traversal Paths

   Kandidat-uppsats, KTH/Matematisk statistik

   Författare :Theodor Hagström; [2023]
   Nyckelord :Bachelor thesis; Radiation therapy; CyberKnife; Applied mathematics; Optimization; Treatment time; Traversal Time; Kandidatexamensarbete; Strålbehandling; CyberKnife; Tillämpad matematik; Optimering; Behandlingstid; Rörelsetid;

   Sammanfattning : Cancer remains a significant global challenge, constituting one of the leading causes of death worldwide. With an aging population, the demand for cancer treatments is increasing. Nevertheless, due to technological advancements, cancer mortality rates are declining. LÄS MER

3. 7. Uncertainties in the use of synthetic CT (sCT) for daily online adaptive radiotherapy for lung cancer

   Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

   Författare :Johansson Vivika; [2023]
   Nyckelord :Medicine and Health Sciences;

   Sammanfattning : Background and purpose: Cone Beam Computed Tomography (CBCT) based online adaptive radiotherapy (oART) has been clinically implemented for several anatomical sites worldwide. However, random and abrupt anatomical changes with large density alterations can occur in lung patients, leading to uncertainties with synthetic computed tomography (sCT) and dose calculation. LÄS MER

4. 8. " Optimization of Margins and Plan Robustness for Proton Therapy of Hodgkin’s Lymphoma"

   Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

   Författare :Filip Hörberger; [2022]
   Nyckelord :Medicine and Health Sciences;

   Sammanfattning : Purpose/Background: Utilizing proton therapy (PT) for treatment of Hodgkin’s lymphoma (HL) has demonstrated favorable features, particularly a reduced dose to organs at risk (OAR) in comparison with photon radiotherapy. However, there is a coherent complexity with PT including its uncertainties, such as range-uncertainties and set-up variations as protons are highly sensitive to tissue density variations within the beam-path. LÄS MER

5. 9. Impact of MR training data on the quality of synthetic CT generation

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

   Författare :Gustav Jönsson; [2022]
   Nyckelord :Generative adversarial network; Machine learning; Radiotherapy; Synthetic CT; MR; CT;

   Sammanfattning : Both computed tomography (CT) and magnetic resonance imaging (MRI) have a purpose for radiotherapy. But having two imaging sessions brings uncertainty which makes it beneficial to create synthetic CT (sCT) images from MR images. In this work a Generative Adversarial Network (GAN) was designed and implemented for sCT generation. LÄS MER

7. 10. Surface Guided Helical Tomotherapy for Total Marrow Irradiation

   Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

   Författare :Hedda Enocson; [2022]
   Nyckelord :Medicine and Health Sciences;

   Sammanfattning : Background: Total marrow irradiation (TMI) with helical tomotherapy treatment (HT-TMI) can be used as conditioning regimen for leukemia patients prior to stem cell transplantation by radiating the skeletal tissue. To ensure adequate dose coverage a margin is applied to the clinical target volume (CTV), i.e. planning target volume (PTV) margin. LÄS MER