초록 ▼

A radiotherapy device control apparatus controls a radiotherapy device. The control apparatus includes a reference image creation section, a transmitted image creation section and an affected area position control section. The radiotherapy device includes a therapeutic radiation irradiation device t

A radiotherapy device control apparatus controls a radiotherapy device. The control apparatus includes a reference image creation section, a transmitted image creation section and an affected area position control section. The radiotherapy device includes a therapeutic radiation irradiation device that radiates therapeutic radiation, an imager that generates an image of a subject by using radiation transmitted through the subject, and a drive device that moves a couch, where the subject is arranged, with respect to the therapeutic radiation irradiation device. The affected area position control section judges whether a relative position of the couch with respect to the therapeutic radiation irradiation device is appropriate and changes the relative position of the couch by using the drive device based on a first position and a second position.

대표청구항 ▼

What is claimed is: 1. A radiotherapy device control apparatus for controlling a radiotherapy device, wherein the radiotherapy device includes: a therapeutic radiation irradiation device which radiates therapeutic radiation, an imager which generates an imager image of a subject by using radiation

What is claimed is: 1. A radiotherapy device control apparatus for controlling a radiotherapy device, wherein the radiotherapy device includes: a therapeutic radiation irradiation device which radiates therapeutic radiation, an imager which generates an imager image of a subject by using radiation transmitted through the subject, a table on which the subject is arranged, and a drive device which moves a relative position of the table with respect to the therapeutic radiation irradiation device, said radiotherapy device control apparatus comprising: a reference image creation section; a transmitted image creation section; an affected area position control section; a three-dimensional data obtaining section which obtains three-dimensional data of the subject; and a two-dimensional image creation section which creates a two-dimensional image based on the three-dimensional data, wherein said reference image creation section collects a reference imager image taken by the imager, wherein said transmitted image creation section takes a transmitted imager image of the subject by the imager, wherein said affected area position control section, in a first treatment operation, judges whether or not the relative position of the table with respect to the therapeutic radiation irradiation device is appropriate based on a third position at which a characteristic point of the subject is displayed in the transmitted imager image and a fourth position at which the characteristic point is displayed in the two-dimensional image, and changes the relative position of the table by using the drive device based on the third position and the fourth position, and wherein said affected area position control section, in a second treatment operation and thereafter, judges whether or not the relative position of the table with respect to the therapeutic radiation irradiation device is appropriate based on a first position at which the characteristic point of the subject is displayed in the transmitted imager image and a second position at which the characteristic point is displayed in the reference imager image, which includes the transmitted imager image taken at a previous treatment operation, and changes the relative position of the table by using the drive device based on the first position and the second position. 2. The radiotherapy device control apparatus according to claim 1, wherein the imager takes the reference imager image when a part of the subject is arranged to be irradiated with the therapeutic radiation, and wherein said affected area position control section, when a first relative position coincides with a second relative position, changes the relative position of the table by using the drive device such that the first position coincides with the second position, the first relative position is a relative position of the imager with respect to the therapeutic radiation irradiation device when the transmitted imager image is taken, and the second relative position is a relative position of the imager with respect to the therapeutic radiation irradiation device when the reference imager image is taken. 3. The radiotherapy device control apparatus according to claim 1, wherein said affected area position control section, based on a relation between the second position and a part position of a part of the subject, changes the relative position of the table by using the drive device such that the part position calculated by using the first position is irradiated with the therapeutic radiation. 4. The radiotherapy device control apparatus according to claim 3, wherein the drive device includes: a table drive device which moves the table, and an irradiation drive device which moves the therapeutic radiation irradiation device, wherein said affected area position control section changes the relative position of the table using the irradiation drive device. 5. The radiotherapy device control apparatus according to claim 4, wherein the imager includes: a first imager, and a second imager, wherein the reference imager image includes: a first reference imager image which is taken by the first imager, and a second reference imager image which is taken by the second imager, wherein the transmitted imager image includes: a first transmitted imager image which is taken by the first imager, and a second transmitted imager image which is taken by the second imager, wherein said affected area position control section changes the relative position of the table by using the drive device based on a seventh position at which the characteristic point of the subject is displayed in the first transmitted imager image, an eighth position at which the characteristic point is displayed in the first reference imager image, a fifth position at which the characteristic point of the subject is displayed in the second transmitted imager image, and a sixth position at which the characteristic point is displayed in the second reference imager image. 6. The radiotherapy device control apparatus according to claim 4, wherein the imager includes: a radiation imager which generates at least one of the transmitted imager image and the reference imager image by using the therapeutic radiation. 7. The radiotherapy device control apparatus according to claim 4, wherein said three-dimensional data obtaining section includes: a three-dimensional data creation section which creates the three-dimensional data of the subject based on a transmitted image taken by the imager. 8. The radiotherapy device control apparatus according to claim 4, wherein said three-dimensional data obtaining section includes: a three-dimensional data collection section which collects the three-dimensional data of the subject, the three-dimensional data being created by a three-dimensional imaging device provided in addition to the radiotherapy device. 9. The radiotherapy device control apparatus according to claim 3, wherein the imager includes: a first imager, and a second imager, wherein the reference imager image includes: a first reference imager image which is taken by the first imager, and a second reference imager image which is taken by the second imager, wherein the transmitted imager image includes: a first transmitted imager image which is taken by the first imager, and a second transmitted imager image which is taken by the second imager, wherein said affected area position control section changes the relative position of the table by using the drive device based on a seventh position at which the characteristic point of the subject is displayed in the first transmitted imager image, an eighth position at which the characteristic point is displayed in the first reference imager image, a fifth position at which the characteristic point of the subject is displayed in the second transmitted imager image, and a sixth position at which the characteristic point is displayed in the second reference imager image. 10. The radiotherapy device control apparatus according to claim 3, wherein the imager includes: a radiation imager which generates at least one of the transmitted imager image and the reference imager image by using the therapeutic radiation. 11. The radiotherapy device control apparatus according to claim 3, wherein said three-dimensional data obtaining section includes: a three-dimensional data creation section which creates the three-dimensional data of the subject based on a transmitted image taken by the imager. 12. The radiotherapy device control apparatus according to claim 3, wherein said three-dimensional data obtaining section includes: a three-dimensional data collection section which collects the three-dimensional data of the subject, the three-dimensional data being created by a three-dimensional imaging device provided in addition to the radiotherapy device. 13. The radiotherapy device control apparatus according to claim 1, wherein the imager is rotatable around a pan axis parallel to a main direction of the table, and around a tilt axis perpendicular to the pan axis. 14. A radiotherapy system comprising: a radiotherapy device control apparatus; and a radiotherapy device, wherein said radiotherapy device control apparatus includes: a reference image creation section; a transmitted image creation section; an affected area position section; a three-dimensional data obtaining section which obtains three-dimensional data of the subject; and a two-dimensional image creation section which creates a two-dimensional image based on the three-dimensional data, wherein said radiotherapy device control apparatus controls said radiotherapy device, wherein said radiotherapy device includes: a therapeutic radiation irradiation device which radiates therapeutic radiation, an imager which generates an imager image of a subject by using radiation transmitted through the subject, a table on which the subject is arranged, and a drive device which moves a relative position of said table, with respect to said therapeutic radiation irradiation device, wherein said reference image creation section collects a reference imager image taken by said imager, wherein said transmitted image creation section takes a transmitted imager image of the subject by said imager, wherein said affected area position control section, in a first treatment operation, judges whether or not the relative position of said table with respect to said therapeutic radiation irradiation device is appropriate based on a third position at which a characteristic point of the subject is displayed in the transmitted imager image and a fourth position at which the characteristic point is displays in the two-dimensional image, and changes the relative position of said table by using said drive device based on the third position and the fourth position, and wherein said affected area position control section, in a second treatment operation and thereafter, judges whether or not the relative position of said table with respect to said therapeutic radiation irradiation device is appropriate based on a first position at which a characteristic point of the subject is displayed in the transmitted imager image and a second position at which the characteristic point is displayed in the reference imager image, which includes the transmitted imager image taken at a previous treatment operation, and changes the relative position of said table by using said drive device based on the first position and the second position. 15. The radiotherapy system according to claim 14, wherein said imager takes the reference imager image when a part of the subject is arranged to be irradiated with the therapeutic radiation, and wherein said affected area position control section, when a first relative position coincides with a second relative position, changes the relative position of said table by using said drive device such that the first position coincides with the second position, the first relative position is a relative position of said imager with respect to said therapeutic radiation irradiation device when the transmitted imager image is taken, and the second relative position is a relative position of said imager with respect to said therapeutic radiation irradiation device when the reference imager image is taken. 16. The radiotherapy system according to claim 14, wherein said affected area position control section, based on a relation between the second position and a part position of a part of the subject, changes the relative position of said table by using said drive device such that the part position calculated by using the first position is irradiated with the therapeutic radiation. 17. The radiotherapy system according to claim 16, wherein said drive device includes: a table drive device which moves said table, and an irradiation drive device which moves said therapeutic radiation irradiation device, wherein said affected area position control section changes the relative position of said table using said irradiation drive device. 18. The radiotherapy system according to claim 17, wherein said imager includes: a first imager, and a second imager, wherein the reference imager image includes: a first reference imager image which is taken by said first imager, and a second reference imager image which is taken by said second imager, wherein the transmitted imager image includes: a first transmitted imager image which is taken by said first imager, and a second transmitted imager image which is taken by said second imager, wherein said affected area position control section changes the relative position of said table by using said drive device based on a seventh position at which the characteristic point of the subject is displayed in the first transmitted imager image, an eighth position at which the characteristic point is displayed in the first reference imager image, a fifth position at which the characteristic point of the subject is displayed in the second transmitted imager image, and sixth position at which the characteristic point is displayed in the second reference imager image. 19. The radiotherapy system according to claim 17, wherein said imager includes: a radiation imager which generates at least one of the transmitted imager image and the reference imager image by using the therapeutic radiation. 20. The radiotherapy system according to claim 17, wherein said three-dimensional data obtaining section includes: a three-dimensional data creation section which creates the three-dimensional data of the subject based on a transmitted image taken by said imager. 21. The radiotherapy system according to claim 17, wherein said three-dimensional data obtaining section includes: a three-dimensional data collection section which collects the three-dimensional data of the subject, the three-dimensional data is created by a three-dimensional imaging device provided in addition to said radiotherapy device. 22. The radiotherapy system according to claim 16, wherein said imager includes: a first imager, and a second imager, wherein the reference imager image includes: a first reference imager image which is taken by said first imager, and a second reference imager image which is taken by said second imager, wherein the transmitted imager image includes: a first transmitted imager image which is taken by said first imager, and a second transmitted imager image which is taken by said second imager, wherein said affected area position control section changes the relative position of said table by using said drive device based on a seventh position at which the characteristic point of the subject is displayed in the first transmitted imager image, an eighth position at which the characteristic point is displayed in the first reference imager image, a fifth position at which the characteristic point of the subject is displayed in the second transmitted imager image, and a sixth position at which the characteristic point is displayed in the second reference imager image. 23. The radiotherapy system according to claim 16, wherein said imager includes: a radiation imager which generates at least one of the transmitted imager image and the reference imager image by using the therapeutic radiation. 24. The radiotherapy system according to claim 16, wherein said three-dimensional data obtaining section includes: a three-dimensional data creation section which creates the three-dimensional data of the subject based on a transmitted image taken by said imager. 25. The radiotherapy system according to claim 16, wherein said three-dimensional data obtaining section includes: a three-dimensional data collection section which collects the three-dimensional data of the subject, the three-dimensional data is created by a three-dimensional imaging device provided in addition to said radiotherapy device. 26. The radiotherapy system according to claim 14, wherein said imager is rotatable around a pan axis parallel to a main direction of the table, and around a tilt axis perpendicular to the pan axis. 27. A radiation irradiation method using a radiotherapy device, wherein the radiotherapy device includes: a therapeutic radiation irradiation device which radiates therapeutic radiation, an imager which generates an imager image of a subject by using radiation transmitted through the subject, a table on which the subject is arranged, and a drive device which moves a relative position of the table, with respect to the therapeutic radiation irradiation device, said radiation irradiation method comprising: obtaining three-dimensional data of the subject; creating a two-dimensional image based on the three-dimensional data; taking a transmitted imager image of the subject by the imager in a first treatment operation; judging whether or not the relative position of the table with respect to the therapeutic radiation irradiation device is appropriate based on a third position at which a characteristic point of the subject is displayed in the transmitted imager image and a fourth position at which the characteristic point is displayed in the two-dimensional image, in the first treatment operation; changing the relative position of the table by using the drive device based on the third position and the fourth position, in the first treatment operation; collecting a reference imager image, which includes the transmitted imager image taken by the imager at a previous treatment operation; imaging a transmitted imager image of the subject by the imager, in a second treatment operation and thereafter; judging whether or not the relative position of the table with respect to the therapeutic radiation irradiation device is appropriate based on a first position at which the characteristic point of the subject is displayed in the transmitted imager image and a second position at which the characteristic point is displayed in the reference imager image, in the second treatment operation and thereafter; and changing the relative position of the table by using the drive device based on the first position and the second position, in the second treatment operation and thereafter. 28. The radiation irradiation method according to claim 27, wherein the reference imager image is taken by the imager when a part of the subject is arranged to be irradiated with the therapeutic radiation, and wherein said changing, in the second treatment operation and thereafter, comprises changing the relative position of the table by using the drive device when a first relative position coincides with a second relative position such that the first position coincides with the second position, the first relative position is a relative position of the imager with respect to the therapeutic radiation irradiation device when the transmitted imager image is taken, and the second relative position is a relative position of the imager with respect to the therapeutic radiation irradiation device when the reference imager image is taken. 29. The radiation irradiation method according to claim 27, wherein said changing, in the second treatment operation and thereafter, comprises changing the relative position of the table by using the drive device based on a relation between the second position and a part position of a part of the subject such that the part position calculated by using the first position is irradiated with the therapeutic radiation. 30. The radiation irradiation method according to claim 29, wherein the drive device includes: a table drive device which moves the table, and an irradiation drive device which moves the therapeutic radiation irradiation device, wherein the irradiation drive device is used when the relative position of the table is changed. 31. The radiation irradiation method according to claim 30, wherein the imager includes: a first imager, and a second imager, wherein the reference imager image includes: a first reference imager image which is taken by the first imager, and a second reference imager image which is taken by the second imager, wherein the transmitted imager image includes: a first transmitted imager image which is taken by the first imager, and a second transmitted imager image which is taken by the second imager, and wherein said changing comprises changing the relative position of the table by using the drive device based on a seventh position at which the characteristic point of the subject is displayed in the first transmitted imager image, an eighth position at which the characteristic point is displayed in the first reference imager image, a fifth position at which the characteristic point of the subject is displayed in the second transmitted imager image, and a sixth position at which the characteristic point is displayed in the second reference imager image. 32. The radiation irradiation method according to claim 30, wherein the imager includes: a radiation imager which generates at least one of the transmitted imager image and the reference imager image by using the therapeutic radiation. 33. The radiation irradiation method according to claim 30, wherein said obtaining includes: creating the three-dimensional data of the subject based on a transmitted image taken by the imager. 34. The radiation irradiation method according to claim 30, wherein said obtaining includes: collecting the three-dimensional data of the subject, the three-dimensional data being created by a three-dimensional imaging device provided in addition to the radiotherapy device. 35. The radiation irradiation method according to claim 29, wherein the imager includes: a first imager, and a second imager, wherein the reference imager image includes: a first reference imager image which is taken by the first imager, and a second reference imager image which is taken by the second imager, wherein the transmitted imager image includes: a first transmitted imager image which is taken by the first imager, and a second transmitted imager image which is taken by the second imager, and wherein said changing comprises changing the relative position of the table by using the drive device based on a seventh position at which the characteristic point of the subject is displayed in the first transmitted imager image, an eighth position at which the characteristic point is displayed in the first reference imager image, a fifth position at which the characteristic point of the subject is displayed in the second transmitted imager image, and a sixth position at which the characteristic point is displayed in the second reference imager image. 36. The radiation irradiation method according to claim 29, wherein the imager includes: a radiation imager which generates at least one of the transmitted imager image and the reference imager image by using the therapeutic radiation. 37. The radiation irradiation method according to claim 29, wherein said obtaining includes: creating the three-dimensional data of the subject based on a transmitted image taken by the imager. 38. The radiation irradiation method according to claim 29, wherein said obtaining includes: collecting the three-dimensional data of the subject, the three-dimensional data being created by a three-dimensional imaging device provided in addition to the radiotherapy device. 39. The radiation irradiation method according to claim 27, wherein the imager is rotatable around a pan axis parallel to a main direction of the table, and around a tilt axis perpendicular to the pan axis. 40. A computer-readable storage medium having embodied thereon computer program product for implementing a radiation irradiation method using a radiotherapy device, wherein the radiotherapy device includes: a therapeutic radiation irradiation device which radiates therapeutic radiation, an imager which generates an imager image of a subject by using radiation transmitted through the subject, a table on which the subject is arranged, and a drive device which moves a relative position of the table, with respect to the therapeutic radiation irradiation device, the computer program product comprising code that, when executed, causes a computer to perform: obtaining three-dimensional data of the subject; creating a two-dimensional image based on the three-dimensional data; taking a transmitted imager image of the subject by the imager in a first treatment operation; judging whether or not the relative position of the table with respect to the therapeutic radiation irradiation device is appropriate based on a third position at which a characteristic point of the subject is displayed in the transmitted imager image and a fourth position at which the characteristic point is displayed in the two-dimensional image, in the first treatment operation; changing the relative position of the table by using the drive device based on the third position and the fourth position, in the first treatment operation; collecting a reference imager image, which includes the transmitted imager image taken by the imager at a previous treatment operation; imaging a transmitted imager image of the subject by the imager, in a second treatment operation and thereafter; judging whether or not the relative position of the table with respect to the therapeutic radiation irradiation device is appropriate based on a first position at which the characteristic point of the subject is displayed in the transmitted imager image and a second position at which the characteristic point is displayed in the reference imager image, in the second treatment operation and thereafter; and changing the relative position of the table by using the drive device based on the first position and the second position, in the second treatment operation and thereafter. 41. The computer-readable storage medium according to claim 40, wherein the reference imager image is taken by the imager when a part of the subject is arranged to be irradiated with the therapeutic radiation, and wherein said changing, in the second treatment operation and thereafter, comprises changing the relative position of the table by using the drive device when a first relative position coincide with a second relative position such that the first position coincides with the second position, the first relative position is a relative position of the imager with respect to the therapeutic radiation irradiation device when the transmitted imager image is taken, and the second relative position is a relative position of the imager with respect to the therapeutic radiation irradiation device when the reference imager image is taken. 42. The computer-readable storage medium according to claim 40, wherein said changing, in the second treatment operation and thereafter, comprises changing the relative position of the table by using the drive device based on a relation between the second position and a part position of a part of the subject such that the part position calculated by using the first position is irradiated with the therapeutic radiation. 43. The computer-readable storage medium according to claim 42, wherein the drive device includes: a table drive device which moves the table, and an irradiation drive device which moves the therapeutic radiation irradiation device, wherein the irradiation drive device is used when the relative position of the table is changed. 44. The computer-readable storage medium according to claim 43, wherein the imager includes: a first imager, and a second imager, wherein the reference imager image includes: a first reference imager image which is taken by the first imager, and a second reference imager image which is taken by the second imager, wherein the transmitted imager image includes: a first transmitted imager image which is taken by the first imager, and a second transmitted imager image which is taken by the second imager, and wherein said changing comprises changing the relative position of the table by using the drive device based on a seventh position at which the characteristic point of the subject is displayed in the first transmitted imager image, an eighth position at which the characteristic point is displayed in the first reference imager image, a fifth position at which the characteristic point of the subject is displayed in the second transmitted imager image, and a sixth position at which the characteristic point is displayed in the second reference imager image. 45. The computer-readable storage medium according to claim 43, wherein the imager includes: a radiation imager which generates at least one of the transmitted imager image and the reference imager image by using the therapeutic radiation. 46. The computer-readable storage medium according to claim 43, wherein said obtaining includes: creating the three-dimensional data of the subject based on a transmitted image taken by the imager. 47. The computer-readable storage medium according to claim 43, wherein said obtaining includes: collecting the three-dimensional data of the subject, the three-dimensional data being created by a three-dimensional imaging device provided in addition to the radiotherapy device. 48. The computer-readable storage medium according to claim 42, wherein the imager includes: a first imager, and a second imager, wherein the reference imager image includes: a first reference imager image which is taken by the first imager, and a second reference imager image which is taken by the second imager, wherein the transmitted imager image includes: a first transmitted imager image which is taken by the first imager, and a second transmitted imager image which is taken by the second imager, and wherein said changing comprises changing the relative position of the table by using the drive device based on a seventh position at which the characteristic point of the subject is displayed in the first transmitted imager image, an eighth position at which the characteristic point is displayed in the first reference imager image, a fifth position at which the characteristic point of the subject is displayed in the second transmitted imager image, and a sixth position at which the characteristic point is displayed in the second reference imager image. 49. The computer-readable storage medium according to claim 42, wherein the imager includes: a radiation imager which generates at least one of the transmitted imager image and the reference imager image by using the therapeutic radiation. 50. The computer-readable storage medium according to claim 42, wherein said obtaining includes: creating the three-dimensional data of the subject based on a transmitted image taken by the imager. 51. The computer-readable storage medium according to claim 42, wherein said obtaining includes: collecting the three-dimensional data of the subject, the three-dimensional data being created by a three-dimensional imaging device provided in addition to the radiotherapy device. 52. The computer-readable storage medium according to claim 40, wherein the imager is rotatable around a pan axis parallel to a main direction of the table, and around a tilt axis perpendicular to the pan axis.