X-ray moving image radiographing apparatus
AssigneeCanon Kabushiki Kaisha
InventorsHiroyuki Urushiya, Osamu Tsujii
Life of this patent
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Abstract
An X-ray moving image radiographing apparatus includes an X-ray detector configured to detect an X-ray transmitting through a subject to acquire a subject image, an image processing unit configured to process an X-ray radiographic image output from the X-ray detector, and a control unit configured to capture a mask image by selectively scanning X-ray focal positions of an X-ray source which has a plurality of X-ray focal points so that an X-ray incident angle varies with respect to a target point of the subject, and to capture a moving image after a predetermined work is performed on the subject by selectively scanning X-ray focal positions of the X-ray source similar to the scanning operation used to capture the mask image.
Claims8
An X-ray moving image radiographing apparatus comprising:
- an X-ray detector configured to detect an X-ray transmitting through a subject to acquire a subject image;
- an image processing unit configured to process an X-ray radiographic image output from the X-ray detector;
- and
- a control unit configured to capture a mask image by selectively scanning X-ray focal positions of an X-ray source which has a plurality of X-ray focal points so that an X-ray incident angle varies with respect to a target point of the subject, and to capture a moving image after a predetermined work is performed on the subject by selectively scanning X-ray focal positions of the X-ray source similar to the scanning operation used to capture the mask image.
An X-ray moving image radiographing apparatus comprising:
- an X-ray source which has a plurality of X-ray focal points;
- an X-ray detector configured to detect an X-ray transmitting through a subject to acquire a subject image;
- an image processing unit configured to process an X-ray radiographic image output from the X-ray detector;
- and
- a control unit configured to capture a mask image by selectively scanning X-ray focal positions of the X-ray source so that an X-ray incident angle varies with respect to a target point of the subject, and to capture a moving image after injecting a contrast medium into the subject by selectively scanning X-ray focal positions of the X-ray source similar to the scanning operation used to capture the mask image;
- wherein the image processing unit subtracts the mask image which is captured at the same focal position as that of the moving image from the corresponding moving image and outputs a resulting image.
A computer-readable medium storing a computer program of instructions which cause the computer to perform a method comprising:
- detecting an X-ray transmitting through a subject to acquire a subject image;
- processing the detected X-ray radiographic image;
- and
- capturing a mask image by selectively scanning X-ray focal positions of an X-ray source which has a plurality of X-ray focal points so that an X-ray incident angle varies with respect to a target point of the subject, and capturing a moving image after a predetermined work is performed on the subject by selectively scanning X-ray focal positions of the X-ray source similar to the scanning operation used to capture the mask image .
Dependencies are inferred from the claim text.