MEPhI specialists have worked out a model of a multipurpose phantom, which allows raise the efficiency of cancer treatment with the help of the radiation therapy.
Radiation therapy is one of perspective methods of oncological diseases’ treatment. “Rosatom” State Atomic Energy Corporation conducts work on creation of a facility for high-precision radiation therapy like “Gamma knife” of a unique construction, which is different from analogues in a way that gamma radiation sources revolve 360 degrees around irradiated volume. For its metrological assurance a modelling radiated body is required – special equipment, with the help of which it is possible to define dose field, formed in a human body under the influence of ionizing radiation in the process of treatment.
Employees of MEPhI Department of construction devices and facilities have created a model of universal water phantom, which allows conduct metrological assurance of radiation therapy facilities with enhanced functionalities and data entry for the system of radiation dose planning.
Universal three dimensional water phantoms are an automated system, which allows measure the configuration of the dose field by getting from the detector of ionizing radiation, moving along target path in the irradiated environment – distilled water, which fills vessels from materials, imitating organism tissues. Their main advantage is the possibility to constantly move the detector along target path.
Model of universal water phantom for new-generation facility “Gamma knife”
“Usually a big part of mechanical elements of existing universal water phantoms is in inside a container with water, which significantly reduces the longevity of the construction and limits the sphere of its application. In the developed model construction elements, which guarantee the movement of the detector, are taken out of it, that way higher accuracy is guaranteed, and the speed of detector positioning in comparison with analogues,” says the supervisor of conducted works, post-graduate student of the Department of construction devices and facilities Iliya Rodko.
