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Showing result 1 - 5 of 6 essays matching the above criteria.
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1. Polymer gel dosimetry with MRI-readout for 3D dose verification - detector characteristics and clinical applications
University essay from Lunds universitet/SjukhusfysikerutbildningenAbstract : Background & Purpose: Radiation therapy is an essential treatment for cancer patients with the ultimate goal to deliver radiation doses to the tumour with precision while minimizing exposure to surrounding healthy tissues. Treatment verification is crucial to ensure the accuracy of radiation delivery, for instance by measuring the radiation dose distribution. READ MORE
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2. Polymer gel dosimetry - Using MRI-readout, simplified relatively non-toxic mixing procedure tested on FLASH
University essay from Lunds universitet/SjukhusfysikerutbildningenAbstract : Background: One of the polymer gel dosimeters available today is the N-isopropylamide (NIPAM) polymer gel dosimeter which has a less toxic monomer compared to other polymer gels and the advantage of being able to be manufactured under normal oxygen levels. Polymer gel dosimeters in general are advantageous independent dosimeters to use for verification of new radiation treatment techniques due to its favorable qualities such as very high resolution, 3D coverage, tissue equivalence and independence of energy and incident direction of the radiation beam. READ MORE
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3. Development of a new dosimetry technique
University essay from Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionenAbstract : In order to minimize the damage inflicted in healthy tissue during radiotherapy, it is vital to verify the dose absorbed by the patient. A common approach is the use of dosimetry gels in which local radiolysis processes are induced through radiation. READ MORE
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4. Breathing interplay effects during Tomotherapy. A 3D gel dosimetry study
University essay from Lunds universitet/SjukhusfysikerutbildningenAbstract : Tomotherapy delivers intensity modulated radiation therapy, IMRT, which enables highly advanced treatment plans with homogenous absorbed dose coverage of the target with sharp dose gradients to spare surrounding healthy tissue. Helical tomotherapy consists of a linear accelerator mounted on a rotating gantry, the construction is similar to a CT although the energy is in the MV-range instead of kV and extra collimators and beam stopper are inserted [1-3]. READ MORE
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5. An investigation of a potential multipurpose readout modality for two and three-dimensional dosimetry using optical computed tomography scanners
University essay from Lunds universitet/SjukhusfysikerutbildningenAbstract : Radiochromic film, polymer gel and radiochromic plastic are three different kinds of dosimeters developed for radiation therapy. Even though all three types of dosimeters are suitable for optical scanning, the proposed readout method is different for each detector system. READ MORE
