The unit is designed for high-precision radiation therapy and radiosurgery of tumors of various sizes in any part of the body.
The most important feature of the Varian EDGE system is that it can be used for both radiosurgical treatment and radiation therapy, including external beam therapy. That is, it is equally effective to deal with tumors of large and small volumes, and of different localization and shape.
The emitter of the installation, equipped with a 160-petal collimator, produces high-precision irradiation of the tumor with micromillimeter precision.
The device also takes into account the change in the position of the patient and his movements using several systems that monitor the accuracy of the irradiation, which eliminates the possibility of error and damage to healthy tissue.
The EDGE Varian is equipped with a high resolution 4D computed tomography system for added accuracy. Diagnostics is carried out directly during the treatment session using the Maestro system - with its help, the location of the neoplasm is monitored continuously - 100 times per second.
The result of the operation of such a system is that the beam with high precision affects only malignant cells, without affecting the surrounding healthy tissues. This increases the effectiveness of treatment, increases a positive prognosis and minimizes the risk of side effects.
The Varian EDGE System has demonstrated excellent results in the treatment of neoplasms of any size and shape in the lungs, prostate, pancreas and liver, as well as multiple metastases throughout the body.
The patient is fixed with a mask or a vacuum bed in a supine position, in the same position, thus, possible displacements through involuntary movements during the procedure are blocked. It should be noted that the procedure time compared to linear accelerators of previous generations was significantly reduced to 15 - 20 minutes, and fixation of the patient does not present great inconvenience. Based on high-precision CT data, MRI uses the Calypso Planning System software to determine the optimal treatment plan.
The patient is awake during treatment but is asked to remain in a specific position. Several restraints are used to immobilize the target radiation areas.
This treatment does not affect the patient's daily life, it is an outpatient treatment method. The patient can return to his daily life immediately after the next procedure.
It is a non-invasive treatment. This is a very accurate way. If the patient receives high doses of radiation in the acute stage of the disease, when the tumor decreases, the doses are sharply reduced. At the same time, thanks to computer and robotic technologies, irradiation errors due to changes in the location of the tumor due to breathing, heartbeats or movements of the patient are eliminated.
Treatment methods are individualized. This increases the possibility of using different treatment regimens according to the disease of each individual patient. Treatment is carried out only according to the international NCCN protocols.
Traditionally, radiation therapy uses techniques to irradiate tumors, when the tumor is exposed to neutrons, protons, alpha and gamma particles. One of the problems with this method is damage to healthy tissues that are forced to fall into the irradiation zone. In order to preserve the anatomical structures as unchanged as possible, it is necessary to clearly distinguish the boundaries of the tumor and deliver the dose exactly to the pathological focus, while maintaining the planned flow rate. This makes it possible to implement the technology of high-precision delivery of doses IMRT. A beam of rays is formed in a three-dimensional form, repeating the contours of the tumor and acting on it from different angles.
The intensity of radiation is regulated at each individual tissue site: the maximum dose falls on the malignant formation, the minimum dose on healthy structures. As a result, the risk of developing radiation burns, ulcers, bone necrosis and other complications, which sometimes require additional surgical intervention and are difficult for patients, is reduced.
Radiotherapy and radiation therapy on the EDGE Varian unit: ultra-precise focusing. The device allows using all kinds of IMRT, VMAT, SRS, SBRT technologies. The unit is distinguished by ultra-precise positioning of the tumor beams. With EDGE Varian, you can fight tumors of any location, size and shape.
The system automatically adjusts the parameters of the emitter every 10 milliseconds, and the patient's table moves in increments of no more than 100 microns (one tenth of a millimeter). Body position is corrected in 6 spatial dimensions.
This allows you to minimize errors arising from micromovements of the body, breathing, heartbeats. The system affects the pathological area with the most powerful dose of radiation to date - 2400 MU / minute. This technology of targeted linear irradiation was used only in a number of leading oncological clinics in the world, but today it is also available in Georgia at the Institute of Clinical Medicine. Ak Todua
An automated system checks the accelerator parameters every 10 milliseconds.
Moving the robotic treatment table with the patient is performed with an accuracy of 0.01 cm. This allows professionals to deliver the proposed dose precisely to the tumor while protecting the healthy surrounding tissue.
4D computed tomography with breath control for planning (performed directly on the treatment table before the procedure).
The IGRT imaging system has been improved, which allows obtaining high quality CT images during a treatment session and monitoring the position of the patient and the deviation of the irradiation target in on-line mode. This significantly distinguishes EDGE from other linear accelerators, which use only two perpendicular X-rays, which increases the risk of inaccurate patient conclusions and can lead to an increase in the dose to healthy tissues.
The innovative Calypso system, which is used in the treatment of hard-to-reach tumors of the lungs, prostate, pancreas, and liver. Calypso monitors target tumor mobility during irradiation with implantable markers. This makes it possible to treat tumors of complex localizations, while protecting healthy tissues as much as possible.
Leading specialist of the clinic, Professor Marina Maglakelidze, Vice-President of the Georgian Association of Oncologists. Clinical Director of the Institute of Clinical Medicine
The latest generation equipment (EDGE by Varian, USA, 2018) is available at the clinic of the Institute of Clinical Medicine in Tbilisi. Information about the clinic can be obtained from the medical experts of Polymedex HG.
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