X-ray imaging apparatus
This X-ray imaging apparatus ( 100 ) includes an X-ray irradiation detection unit ( 1 ) including an X-ray tube ( 11 ) and an FPD ( 2 ), a table ( 2 ) on which a subject ( 10 ) is placed, and a control unit ( 3 ) that synthesizes a first X-ray image obtained by sequentially performing X-ray imaging using a contrast medium while moving the table relative to the X-ray irradiation detection unit and a second X-ray image obtained by radiographing, without using the contrast medium, the subject at one position selected based on the first X-ray image.
1. An X-ray imaging apparatus comprising:
an X-ray irradiation detection unit including an X-ray irradiation unit that irradiates a subject with X-rays and an X-ray detection unit that detects the X-rays transmitted through the subject;
a table configured to have the subject placed thereon and move in a table plane; and
a controller that synthesizes a first X-ray image obtained by sequentially performing X-ray imaging according to a first imaging range using a contrast medium while moving the table relative to the X-ray irradiation detection unit in the table plane and a second X-ray image obtained by radiographing, without using the contrast medium, the subject at one position selected based on the first X-ray image, wherein
the X-ray imaging apparatus captures the second X-ray image a minimum number of times according to a second imaging range of the second X-ray image when the second imaging range requires a plurality of times of X-ray imaging,
the second imaging range is a rectangular shape range selected in the first imaging range.
2. The X-ray imaging apparatus according to claim 1 , wherein
the controller performs subtraction processing of the first X-ray image and the second X-ray image to synthesize the images.
3. The X-ray imaging apparatus according to claim 1 , wherein
the first X-ray image is captured in association with a position of the table relative to the X-ray irradiation detection unit, and
the table is moved relative to the X-ray irradiation detection unit to a position where the second X-ray image is captured based on the position of the table relative to the X-ray irradiation detection unit at a time of capturing the first X-ray image.
4. The X-ray imaging apparatus according to claim 3 , wherein
the controller aligns the position of the table relative to the X-ray irradiation detection unit in the first X-ray image to the position of the table relative to the X-ray irradiation detection unit in the second X-ray image when synthesizing the first X-ray image and the second X-ray image.
5. The X-ray imaging apparatus according to claim 1 , wherein
the first X-ray image is acquired based on a plurality of times of the X-ray imaging, and
the controller synthesizes the first X-ray image and the second X-ray image captured at the one position selected based on the first X-ray image acquired by the plurality of times of the X-ray imaging.
6. The X-ray imaging apparatus according to claim 5 , wherein
the controller synthesizes the first X-ray image and the second X-ray image captured at the one position selected regardless of a plurality of positions where the X-ray imaging is performed to acquire the first X-ray image.
7. The X-ray imaging apparatus according to claim 1 , wherein
the first X-ray image is captured while rotating the X-ray irradiation detection unit, and is associated with a position of the table relative to the X-ray irradiation detection unit and a rotational position of the X-ray irradiation detection unit, and
based on the position of the table relative to the X-ray irradiation detection unit and the rotational position of the X-ray irradiation detection unit at a time of capturing the first X-ray image, the table is moved relative to the X-ray irradiation detection unit to a position where the second X-ray image is captured, and the X-ray irradiation detection unit is rotated.
8. The X-ray imaging apparatus according to claim 1 , wherein
the controller superimposes a synthesis image obtained by synthesizing the first X-ray image and the second X-ray image on a fluoroscopic image for treatment to synthesize the synthesis image and the fluoroscopic image.
9. An X-ray imaging method, comprising:
irradiating a subject with X-rays and detecting the X-rays transmitted through the subject via an X-ray detection unit;
placing a subject on a table and moving the table in a table plane; and
synthesizing a first X-ray image obtained by sequentially performing X-ray imaging according to a first imaging range using a contrast medium while moving the table in the table plane and a second X-ray image obtained by radiographing according to a second imaging range, without using the contrast medium, the subject at one position selected based on the first X-ray image, wherein
the first imaging range has a rectangular shape,
an X-ray imaging apparatus, comprising the table, the X-ray irradiation detection unit and a controller, captures the second X-ray image a minimum number of times according to a second imaging range of the second X-ray image when the second imaging range requires a plurality of times of X-ray imaging, and
the second imaging range is a rectangular shape range selected in the first imaging range.
10. The X-ray method according to claim 9 , wherein
the synthesizing step includes subtraction processing of the first X-ray image and the second X-ray image to synthesize the images.
11. The X-ray method according to claim 9 , wherein
the first X-ray image is captured in association with a position of the table relative to the X-ray irradiation detection unit, and
the table is moved relative to the X-ray irradiation detection unit to a position where the second X-ray image is captured based on the position of the table relative to the X-ray irradiation detection unit at a time of capturing the first X-ray image.
12. The X-ray method according to claim 11 , wherein
the synthesizing step includes aligning the position of the table relative to the X-ray irradiation detection unit in the first X-ray image to the position of the table relative to the X-ray irradiation detection unit in the second X-ray image when synthesizing the first X-ray image and the second X-ray image.
13. The X-ray method according to claim 9 , wherein
the first X-ray image is acquired based on a plurality of times of the X-ray imaging, and
the synthesizing step includes synthesizing the first X-ray image and the second X-ray image captured at the one position selected based on the first X-ray image acquired by the plurality of times of the X-ray imaging.
14. The X-ray method according to claim 13 , wherein
the synthesizing step includes synthesizing the first X-ray image and the second X-ray image captured at the one position selected regardless of a plurality of positions where the X-ray imaging is performed to acquire the first X-ray image.
15. The X-ray method according to claim 9 , wherein
the first X-ray image is captured while rotating the X-ray irradiation detection unit, and is associated with a position of the table relative to the X-ray irradiation detection unit and a rotational position of the X-ray irradiation detection unit, and
based on the position of the table relative to the X-ray irradiation detection unit and the rotational position of the X-ray irradiation detection unit at a time of capturing the first X-ray image, the table is moved relative to the X-ray irradiation detection unit to a position where the second X-ray image is captured, and the X-ray irradiation detection unit is rotated.
16. The X-ray method according to claim 9 , wherein
the synthesizing step includes superimposing a synthesis image obtained by synthesizing the first X-ray image and the second X-ray image on a fluoroscopic image for treatment to synthesize the synthesis image and the fluoroscopic image.