摘要:
A radiation control method includes: calculating degrees of similarity corresponding to matching target areas; calculating a specific image position where a specific image area corresponding to a maximum value of the degrees of similarity out of the matching target areas is positioned in a radiographic image; and calculating a drive amount with which a therapeutic radiation ray irradiation device is driven, based on the specific image position. Further, calculating one degree of similarity corresponding to one matching target region out of the degrees of similarity includes: referring to a template table in which the matching target areas are associated with sets of templates to calculate a set of templates corresponding to the one matching target area out of the sets of templates; and detecting, from the set of templates, a similar template most similar to a matching target image displayed in the one matching target area of the radiographic image.
摘要:
A radiation therapy apparatus control method includes: calculating a plurality of degrees of similarity corresponding to a plurality of matching target areas based on a radiographic image; calculating a specific image position where a specific image area corresponding to a maximum value of the degrees of similarity out of the matching target areas is positioned in the radiographic image; and calculating a drive amount with which a therapeutic radiation ray irradiation device is driven, based on the specific image position. The operation of calculating the one degree of similarity corresponding to the one matching target region out of the degrees of similarity includes: referring to a template table in which the plurality of matching target areas are associated with a plurality of sets of templates to calculate a set of templates corresponding to the one matching target area out of the plurality of sets of templates; and detecting, from the set of templates, a similar template most similar to a matching target image displayed in the one matching target area of the radiographic image.
摘要:
A radiotherapy device controller includes: a visual line calculator configured to calculate a visual line based on a position on a transmissive image imaged using a radiation penetrating a subject, a specific part of the subject being shown at the position; a position calculator configured to calculate a position of the specific part based on a position of a trajectory of the specific part and a position of the visual line; and an emitter configured to control a radiation emitter that emits a therapeutic radiation, so that the therapeutic radiation penetrates at the position of the specific part.
摘要:
A radiotherapy device controller includes: a visual line calculator configured to calculate a visual line based on a position on a transmissive image imaged using a radiation penetrating a subject, a specific part of the subject being shown at the position; a position calculator configured to calculate a position of the specific part based on a position of a trajectory of the specific part and a position of the visual line; and an emitter configured to control a radiation emitter that emits a therapeutic radiation, so that the therapeutic radiation penetrates at the position of the specific part.
摘要:
A specific site location measuring includes: calculating matching degrees based on a plurality of transmission images imaged by use of radiation transmitting through a specimen and a template set; selecting a template transmission image from the plurality of transmission images based on the matching degrees; adding a new template generated based on the template transmission image, to the template set; imaging a location measurement transmission image by use of radiation transmitting through the specimen; selecting an optimal template that is the most similar to a portion of the location measurement transmission image, from the template set by performing pattern matching of each of templates of the template set with the location measurement transmission image; and calculating a specific site location based on the location measurement transmission image and the optimal template.
摘要:
A radiotherapy apparatus controller includes: an imperfect three-dimensional data calculating unit configured to calculate an imperfect three-dimensional data based on a plurality of imperfect transmission images which is respectively imaged from a plurality of imperfect directions except a predetermined direction among a plurality of directions different from each other; an imaging unit configured to image an additional transmission image from the predetermined direction by using an imager system; a perfect three-dimensional data calculating unit configured to calculate a perfect three-dimensional data based on the additional transmission image and the imperfect three-dimensional data; and a position calculating unit configured to calculate a position of a part of a subject inside based on the perfect three-dimensional data. The radiotherapy apparatus controller can faster calculate the position with higher precision.
摘要:
A radiation tomography method of the present invention includes: calculating a radiating timing, with reference to imaging timing correction data relating a plurality of gantry angles to a plurality of imaging timing correction amounts, on the basis of an imaging timing at which a radiation source supported by a rotating traveling gantry is arranged at a predetermined imaging angle and an imaging timing correction amount, of the plurality of imaging timing correction amounts, related to a gantry angle at which the traveling gantry is arranged at the imaging timing; and calculating, on the basis of an X-ray image imaged with a radiation radiated from the radiation source at the radiating timing, three-dimensional data of the X-ray image of a subject. According to the radiation tomography method, the X-ray image imaged with the further accurately arranged radiation can be obtained even in a case where the traveling gantry deflects depending on the gantry angle at which the traveling gantry is arranged, and thus the three-dimensional data can be obtained more accurately.
摘要:
A radio tomography imaging method includes calculating a conversion function based on transmission images picked up by using radiation emitted from first and second radiation sources. A position of the second radiation source when the radiation has been emitted coincides with a position of the first radiation source when the radiation has been emitted, and one of the first and second radiation sources emits the radiation when the other emits the radiation, picking up a plurality of first reconfiguration transmission images and a plurality of second reconfiguration transmission images by using a plurality of first reconfiguration radiations and a plurality of second reconfiguration radiations simultaneously emitted from the first radiation source and the second radiation source. The plurality of first and second reconfiguration transmission images are then corrected based on the conversion function. The plurality of corrected transmission images are reconfigured into three-dimensional data.
摘要:
A radio tomography imaging method according to the present invention includes: calculating a conversion function based on a transmission image picked up by using a radiation emitted from a first radiation source and a transmission image picked up by using a radiation emitted from a second radiation source; wherein a position of the second radiation source when the radiation has been emitted coincides with a position of the first radiation source when the radiation has been emitted, and one of the first and second radiation sources emits the radiation when the other emits the radiation, picking up a plurality of first reconfiguration transmission images and a plurality of second reconfiguration transmission images by using a plurality of first reconfiguration radiations and a plurality of second reconfiguration radiations simultaneously emitted from the first radiation source and the second radiation source; correcting the plurality of first reconfiguration transmission images and the plurality of second reconfiguration transmission images into a plurality of corrected transmission images based on the conversion function; and reconfiguring the plurality of corrected transmission images into three-dimensional data.
摘要:
A radiotherapy apparatus controller includes: an imperfect three-dimensional data calculating unit configured to calculate an imperfect three-dimensional data based on a plurality of imperfect transmission images which is respectively imaged from a plurality of imperfect directions except a predetermined direction among a plurality of directions different from each other; an imaging unit configured to image an additional transmission image from the predetermined direction by using an imager system; a perfect three-dimensional data calculating unit configured to calculate a perfect three-dimensional data based on the additional transmission image and the imperfect three-dimensional data; and a position calculating unit configured to calculate a position of a part of a subject inside based on the perfect three-dimensional data. The radiotherapy apparatus controller can faster calculate the position with higher precision.