Distance Source-Rotation Center

Source-Rotation Center distance: an important parameter of radiation therapy devices

The Source-Center of Rotation (SRC) distance is the distance from the source of ionizing radiation in the radiation therapy apparatus to the axis of rotation of the source or irradiated object. This parameter plays an important role in radiation therapy because it determines how accurately the tumor is irradiated and minimizes radiation exposure to surrounding healthy tissue.

In radiation therapy devices, the Source-Center of Rotation distance may vary depending on the type of device and its design. Usually it ranges from 70 to 100 cm, but it can be more. If the Source-Rotation Center distance is less than required, this may result in radiation dose heterogeneity and an increased risk of complications after the radiation therapy procedure. If the distance is greater than necessary, this may lead to unnecessary patient exposure and reduced treatment effectiveness.

Determining the optimal Source-Rotation Center distance is an important step in radiotherapy planning. For this, various methods are used, for example, computed tomography, which allows you to obtain an accurate image of the tumor and determine the optimal position of the radiation source. Special programs are also used to plan the radiation dose, which take into account the Source-Rotation Center distance, as well as other radiation parameters, such as the shape and size of the tumor, its location, etc.

It is important to note that the Source-Rotation Center distance is not the only parameter that affects the effectiveness of radiation therapy. Other factors, such as the type and energy of radiation, dose and duration of exposure, also play an important role. However, determining the optimal Source-Rotation Center distance is a necessary condition for achieving maximum efficiency and safety of the radiation therapy procedure.

Thus, the Source-Rotation Center distance is an important parameter of radiation therapy devices. It determines the precision of irradiation of the tumor and minimizes the impact of rays on surrounding healthy tissue. Determining the optimal Source-Rotation Center distance is an important step in radiation therapy planning and requires the use of special methods and programs to obtain the most accurate results.

The distance between the source and the center of rotation is one of the most important parameters that is determined when installing sources of ionizing radiation in devices for radiation and brachytherapy. This is the radius of the trajectory along which the radiation source moves around the axis of rotation, and the distance from the axis of rotation to the center of the radiation, respectively. Why is this parameter so important?