Essays about: "radiotherapy"

Showing result 11 - 15 of 158 essays containing the word radiotherapy.

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

   University essay from Lunds universitet/Sjukhusfysikerutbildningen

   Author : Johansson Vivika; [2023]
   Keywords : Medicine and Health Sciences;

   Abstract : 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. READ MORE

3. 12. Proton radiotherapy spot order optimization to maximize the FLASH effect

   University essay from Uppsala universitet/Avdelningen för beräkningsvetenskap

   Author : Oscar Widenfalk; [2023]
   Keywords : Radiotherapy; Optimization; FLASH;

   Abstract : Cancer is a group of deadly diseases, to which one treatment method is radiotherapy. Recent studies indicate advantages of delivering so-called FLASH treatments using ultra-high dose rates (> 40 Gy/s), with a normal tissue sparing FLASH effect. READ MORE

4. 13. Evaluation of the iterative kilovoltage cone-beam computed tomography reconstruction method for the Varian TrueBeam system

   University essay from

   Author : Tamana Haidari; [2022-03-18]
   Keywords : Medical physics; FDK algorithm; iterative algorithm; CBCT; image quality;

   Abstract : Introduction: Radiotherapy is used to treat patients with various types of cancer, where linear accelerators produce the radiation beam used for the treatment. Before each treatment fraction, the patient needs to be correctly positioned according to the treatment plan. READ MORE

5. 14. " Optimization of Margins and Plan Robustness for Proton Therapy of Hodgkin’s Lymphoma"

   University essay from Lunds universitet/Sjukhusfysikerutbildningen

   Author : Filip Hörberger; [2022]
   Keywords : Medicine and Health Sciences;

   Abstract : 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. READ MORE

6. 15. Simulation of Microwave Heating of Healthy and Cancerous Human Tissue With Gold Nanoparticles

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Hampus Carlens; Mika Söderström; [2022]
   Keywords : Gold nanoparticle GNP ; Electrophoretic resonance; Dispersive permittivity; Cancer treatment; Waveguide; Radiotherapy; Graded material.;

   Abstract : With a great need for new and better cancer treatments, microwaves and gold nanoparticles (GNPs) are increasingly being suggested to be used in radiotherapy. In thisreport, the authors present an investigation of how human tissue,both malignant and healthy, behaves under microwave radiation. READ MORE