X-ray fluoroscopic apparatus
AssigneeShimadzu Corporation
InventorsShinichiro Mori, Wataru Takahashi
Life of this patent
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Abstract
An X-ray fluoroscopic apparatus is capable of irradiating exactly a therapeutic beam considering a specific-regional area, and in addition is able to perform an easy confirmation of the specific region even when the specific region is difficult to visually recognize by a user. A control element 30 has a DRR image generation element 31, an X-ray fluoroscopic radiograph generation element 32, a template area selection element 33, a template generation element 34, a position detection element 35, a radiation area projection element 36, a specific region projection element 37, a superimposition element 38, an image display element 39, a gating element 40 and a memory storing element 41 that stores a variety of data including image data.
Claims12
An X-ray fluoroscopic apparatus, that collects an X-ray fluoroscopic radiograph including a specific region of a subject and detects a position of the specific region, and sends a therapeutic beam irradiation signal to a radiation irradiation device while tracking a movement of said specific region, said X-ray fluoroscopic apparatus, further comprising:
- an X-ray tube;
- an X-ray detector that detects an X-ray that is irradiated from said X-ray tube and transmits through said subject;
- an irradiation area projection element that generates a projection area denoting a therapeutic beam irradiation area by performing a virtual fluoroscopic projection simulating a geometric fluoroscopic condition between said X-ray tube and said X-ray detector relative to an initial set of CT image data based on said therapeutic beam irradiation area registered in said CT image data of said subject generated when an initial therapy planning is created;
- a specific region projection element that generates a specific projection area denoting a specific regional area by performing a virtual fluoroscopic projection simulating a geometric fluoroscopic condition between said X-ray tube and said X-ray detector relative to said initial set of CT image data based on the specific region registered on said CT image data of said subject generated when said therapy planning is created;
- a superimposition element that both superimposes the projection area denoting said therapeutic beam irradiation area onto said X-ray fluoroscopic radiograph, and superimposes the specific projection area denoting said specific-regional area to said X-ray fluoroscopic radiograph at said specific-regional position detected based on said X-ray fluoroscopic radiograph;
- and
- a gating element that sends the therapeutic beam irradiation signal to the radiation irradiation apparatus when the projection area denoting the specific-regional area superimposed onto the X-ray fluoroscopic radiograph by said superimposition element are placed in the projection area denoting the therapeutic beam irradiation area superimposed to the X-ray fluoroscopic radiograph by the superimposition element.
An x-ray fluoroscopic apparatus, comprising:
- an X-ray tube;
- an X-ray detector that detects an X-ray that is irradiated from said X-ray tube and transmits through a subject;
- wherein:
- said X-ray fluoroscopic apparatus collects an X-ray fluoroscopic radiograph including a specific region of said subject and detects a position of the specific region, and sends a therapeutic beam irradiation signal to a radiation irradiation device while tracking a movement of said specific region;
- a specific region projection element that generates a projection area denoting said specific-regional area by performing a virtual fluoroscopic projection simulating a geometric fluoroscopic condition between said X-ray tube and said X-ray detector relative to an initial set of CT image data of said subject based on said specific region registered on said CT image data of said subject generated when an initial therapy planning is created;
- a DRR image generation element that generates a DRR image including said specific region by performing a virtual fluoroscopic projection simulating a geometric fluoroscopic condition between said X-ray tube and said X-ray detector relative to CT image data of said subject generated when said initial therapy planning is created;
- a template area selection element that selects an area including said specific region from said X-ray fluoroscopic radiograph;
- an image display element that displays an image of an area including said specific region in said X-ray fluoroscopic radiograph selected by said template area selection element, and an image obtained by superimposing a projection area denoting said specific region generated by said specific region projection element to a DRR image generated by said DRR image generation element;
- a template generation element that generates a template indicating said specific region from an area including said specific region selected by said template area selection element;
- and
- a position detection element that detects a position of said specific region relative to said fluoroscopic radiograph by performing template matching by using said X-ray fluoroscopic radiograph and a template generated by said template generation element.
Dependencies are inferred from the claim text.