FIELD: medicine.
SUBSTANCE: essence of the invention is as follows: in the process of performing radiation therapy operations, two identical disks are made with a thickness equal to the absorption thickness of particles with maximum energy, with identical cutouts in the form of a truncated segment, the disks are aligned with each other until the cut out segments coincide, and through holes are drilled into them along a line centered with the disks of the circle, the radius of the circle is chosen greater than the radius of the inner arc of the cut segment, the diameter of the through holes is chosen much less than the arc length of the centered circle in the area of the cut segment, the disk shaft is placed parallel to the beam at a distance from the shaft axis to the beam axis equal to the radius of the centered circles, absorbing elements of various thicknesses are installed in the holes of the second disk in the direction of beam propagation; the combined disks are given a rotational movement.
EFFECT: operational monitoring of the energy of charged particles during radiation therapy operations.
1 cl
