Essays about: "CTV"

Showing result 1 - 5 of 16 essays containing the word CTV.

1. 1. Decarbonisation of service vessels in offshore wind power through power-to-X self-sufficiency

   University essay from Lunds universitet/Miljö- och energisystem

   Author : Clemens Kellander; Ludvig Fredriksson; [2023]
   Keywords : Alternative fuels; compressed hydrogen; battery; production; energy storage; operation and maintenance; O M; offshore; wind power; service vessel; crew transfer vessel; CTV; service operations vessel; SOV; decarbonisation; global warming potential; life cycle; Technology and Engineering;

   Abstract : This report examines the possibilities of decarbonising operation & maintenance vessels for a prospective floating offshore wind power park at the Utsira Nord site in Norway, through self-sufficient energy carrier production utilizing power-to-X-solutions. Possible alternative fuels are identified as compressed hydrogen, batteries, liquid hydrogen, ammonia, methanol, and biofuels, out of which the former two are the subject for thorough investigation in this report. READ MORE

3. 2. 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. 3. " 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

5. 4. Surface Guided Helical Tomotherapy for Total Marrow Irradiation

   University essay from Lunds universitet/Sjukhusfysikerutbildningen

   Author : Hedda Enocson; [2022]
   Keywords : Medicine and Health Sciences;

   Abstract : 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. READ MORE

6. 5. Evaluation of margins and plan robustness for proton therapy of unilateral tonsil cancer.

   University essay from Umeå universitet/Institutionen för fysik; Umeå universitet/Institutionen för strålningsvetenskaper

   Author : Josefine Grefve; [2021]
   Keywords : ;

   Abstract : During proton therapy both target volumes and healthy tissue, including organs at risk (OARs), receives radiation dose. Thus, radiotherapy is a trade-off between good target coverage and OAR sparing. For protons, most of the dose is deposited right before it is stopped, a phenomenon termed the Bragg peak. READ MORE