Implementation of nuclear magnetic resonance polymer-gel dosimetry into clinical practice
نویسندگان
چکیده
منابع مشابه
Magnetic Resonance Elastography of Polymer Gel Dosimetry Phantoms
Introduction: Magnetic resonance imaging dependent polymer gel dosimetry is a technique that offers unique advantages for implementing increasingly complex radiotherapy procedures, due to the high spatial resolution and volumetric dosimetry capabilities. The technique involves the estimation of radiation dose distribution based on the changes in MR relaxation parameters caused by radiation indu...
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A quantitative comparison of two full three-dimensional (3D) gel dosimetry techniques was assessed in a clinical setting: radiochromic gel dosimetry with an in-house developed optical laser CT scanner and polymer gel dosimetry with magnetic resonance imaging (MRI). To benchmark both gel dosimeters, they were exposed to a 6 MV photon beam and the depth dose was compared against a diamond detecto...
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Modern radiation techniques aim on improved 3-dimensional (3D) spatial selectivity of the dose application sparing dose from organs-at-risk (e.g. IMRT with micro-multileaf collimation, γ-knife-, Brachyand heavy-ion therapy). The corresponding 3D-dose distributions exhibit high dose gradients above 4 Gy/mm, which are difficult to be investigated using standard single-point dosimetric detectors ...
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Background: In this work investigation of the normoxic PAGAT polymer gel dosimeter such as sensitivity, the R2-dose response with post time and the percentage depth dose (PDD) of PAGAT polymer gel dosimeter have been undertaken. Materials and Methods: Using MRI, the formulation to give the maximum change in the transverse relaxation rate R2 was determined to be 4.5% N,N'-methylenbis- ...
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ژورنال
عنوان ژورنال: Medical Physics
سال: 2003
ISSN: 0094-2405
DOI: 10.1118/1.1582551