FIELD: radiation therapy technology.
SUBSTANCE: group of inventions relates to a method of using a device for selecting irradiation parameters. Equipment for neutron capture therapy configured to evaluate the quality of the irradiation point and irradiation angle, contains a neutron beam generation unit, an irradiation chamber for irradiating an irradiated object with a neutron beam, a control chamber for monitoring the irradiation, an installation table for placing the patient and a control system (7) to monitor and manage the treatment process. The control system (7) contains a device (71) for selecting irradiation parameters to select the optimal irradiation point and irradiation angle. The device (71) for selecting irradiation parameters contains a selection part (711) for selecting sets of irradiation points and irradiation angles; a calculation part (712) for calculating an estimated value corresponding to each set of irradiation points and irradiation angles, and outputting a report; and a selection part (713) for removing, from all the selected irradiation points and irradiation angles, irradiation points and irradiation angles that are not feasible in the actual irradiation process, and selecting one optimal feasible set of irradiation points and irradiation angles according to the estimated values calculated by the calculation part. The method of using the irradiation parameter selection device contains the following steps: the selection part reads the patient's image, such as CT, or MRI, or PET-CT, which has a clear anatomy of the human body, determines the outline of each organ, tissue and tumor in turn, provides settings for material type and density and selects the irradiation point and irradiation angle of the neutron beam after determining the contour, material and density; the calculation part calculates the trajectory in the organ through which the neutron beam passes, that is, it calculates the type and thickness of the organ through which the neutron beam passes after entering the body, determines whether the tumor is within the range of the maximum treatable depth after obtaining information about the trajectory of the neutron beam passing through the body. If the answer is yes (the tumor is within the range of the maximum treatable depth), it calculates the estimated value corresponding to the irradiation point and irradiation angle according to the trajectory information combined with the organ boron concentration data, organ irradiation sensitivity coefficient, and neutron beam characteristic information specified by the user. If the answer is no (the tumor is not within the range of the maximum treatable depth), it assigns the worst estimated value and records the irradiation point, irradiation angle and the corresponding estimated value after calculating the estimated value, and the sample part removes, from all selected irradiation points and irradiation angles, irradiation points and irradiation angles that are not feasible in the actual irradiation process, and selects one optimal feasible set of irradiation points and irradiation angles according to the estimated values calculated by the calculation part.
EFFECT: inventions optimize the process of adjusting the position of the positioning table, thereby reducing the time for adjusting the patient’s position and increase the efficiency of using neutron capture therapy equipment.
10 cl, 6 dwg
