Essays about: "dose planning"

Showing result 21 - 25 of 118 essays containing the words dose planning.

  1. 21. FETAL DOSE ESTIMATION IN ABDOMINAL AND PELVIC CT EXAMINATIONS

    University essay from

    Author : Olivia Carlstein; [2021-05-10]
    Keywords : Medical physics; Fetal dose; abdominal CT examination; pelvic CT examination; phantom measurement;

    Abstract : Purpose: The purpose of this is study was to compare different methods for estimating the fetal dose, how much the different methods differ from each other and on which dose levels the fetal doses are estimated to. Theory: A radiological procedure should always be justified and in the case of a pregnant patient the justification should include both the mother and the fetus. READ MORE

  3. 22. Scenario Dose Calculation for Robust Optimization in Proton Therapy Treatment Planning

    University essay from Lunds universitet/Matematik LTH

    Author : Johan Sundström; [2021]
    Keywords : cancer; radiation therapy; proton therapy; treatment planning; robust optimization; dose calculation algorithms; scenarios; patient setup; range error; organ motion; pencil beam scanning; computational efficiency; range-corrected dose-mapping; Mathematics and Statistics;

    Abstract : Robust optimization plays a vital role in proton therapy treatment planning. A monoenergetic beam of protons has a finite range and delivers most of its dose at some specific depth in the patient. This allows the design of treatments that mainly damage the tumor and not any surrounding tissue. READ MORE

  4. 23. Deep Learning for Dose Prediction in Radiation Therapy : A comparison study of state-of-the-art U-net based architectures

    University essay from Uppsala universitet/Avdelningen för systemteknik

    Author : Maja Arvola; [2021]
    Keywords : Radiotherapy; Machine learning; Dose prediction; U-net;

    Abstract : Machine learning has shown great potential as a step in automating radiotherapy treatment planning. It can be used for dose prediction and a popular deep learning architecture for this purpose is the U-net. Since it was proposed in 2015, several modifications and extensions have been proposed in the literature. READ MORE

  5. 24. Scenario dose prediction for robust automated treatment planning in radiation therapy

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

    Author : Oskar Eriksson; [2021]
    Keywords : Radiation therapy; automated treatment planning; scenario dose prediction; robust optimization; dose mimicking; Strålterapi; automatisk behandlingsplanering; scenariodosprediktion; robust optimering; dosåterskapande;

    Abstract : Cancer is a group of diseases that are characterized by abnormal cell growth and is considered a leading cause of death globally. There are a number of different cancer treatment modalities, one of which is radiation therapy. READ MORE

  6. 25. Investigation of a Collapsed Cone Superposition Algorithm for dosimetry in brachytherapy

    University essay from Stockholms universitet/Fysikum

    Author : Freja Alpsten; [2021]
    Keywords : Brachytherapy; Collapsed Cone; Model-Based Dose Calculation Algorithms; Radiotherapy;

    Abstract : Background & Purpose: The current standard dosimetry in brachytherapy treatment planning, the TG-43 formalism, ignore the presence of non-water media and finite patient dimensions. This can cause clinically relevant errors in dose estimates. READ MORE