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Томотерапия
TOMOTHERAPY
TomoTherapy – is a non-invasive radiation therapy method that destroys cancer cells to stop their growth and one of the most effective cancer treatment procedures.
Today, tomotherapy is the gold standard in the international practice of cancer treatment, which is available for the first time in Kazakhstan.
It combines an advanced radiation beamforming technology with daily monitoring of a patient and target (tumor) position using computer images. This allows doctors and patients to be confident in the highest accuracy and safety of the treatment.
A fundamentally new effective method for the treatment of oncological diseases is based on the combination of a circular spiral tomograph with a binary multi-leaf collimator, which continuously probes the desired area by directed radiation beams, providing therapy with more accurate modulation of the radiation intensity; the tumor is irradiated in all directions with a 360⁰ turn and with separation into many layers.
The built-in imaging device identifies and verifies the location of the tumor tissue, which is then exposed to high-precision radiation, minimizing the impact on healthy tissues and organs.
This method allows to achieve great success in the treatment of all cancer types, even those that have so far been difficult to eliminate using existing radio-emitting equipment or surgical intervention.
Preparation for the treatment
During this stage, additional examinations are performed in order to clarify the localization and assess the state of healthy tissues surrounding the pathological focus. Before starting a tomotherapy course, radiation doses are carefully calculated and its methods are determined, with the help of which it is possible to achieve maximum destruction of tumor cells and protection of healthy tissues. The radiation oncologist determines the radiation volume (performs “contouring” of the planned radiation area) and selects the required number of tomotherapy fractions/sessions, according to the protocols for the diagnosis and treatment of malignant neoplasms. Dosimetric plan calculations are performed by a team of highly qualified specialists - medical physicists. Calculating the plan and making a decision can take several days. This procedure is called radiotherapy planning.
How is tomotherapy treatment performed? Choosing a tomotherapy treatment regimen
On average, the treatment course lasts from 1 to 8 weeks and depends on the location, volume and type of cancer.
Radiotherapy sessions are performed 5 times a week. A two-day break at the end of the week allows healthy tissues to recover.
Radiation therapy is prescribed after the meeting of the Multidisciplinary Group (MDG). The decision on the total dose of radiation and the number of sessions is made by the radiation oncologist, based on the size and the location of the tumor, its type, patient’s general condition and other types of therapy being performed.
How is the treatment session performed?
You will be asked to lie still and calmly on the treatment table of the Tomotherapy machine. According to the “marks” previously made on the skin, the irradiation areas will be accurately determined. Therefore, you must not move during radiation. It is necessary to lie calmly, without tension, breathing should be natural and even. You will stay in the treatment room for 15-30 minutes Before turning on the machine, the medical staff goes to another room and watches you on video cameras. You can communicate with them through a loudspeaker. Some parts of radiotherapy machines may move and make noise during operation. Don't worry - the whole process is under control. The radiation itself is painless. If you feel unwell during radiation, inform the medical staff immediately without taking any independent actions. The machine can be turned off at any time.
