Shimadzu Corporation

Keiichi Goto

Wataru Takahashi

Michel Dargis

Koki Yoshida

Takanori Yoshida

Shinya Hirasawa

Takihito Sakai

Daisuke Notohara

Dai Hirose

Shota Sato

Kazuhiro Mori

Shingo Baba

Koichi Shibata

Sebastien Matte

Yukio Mishina

A radiography apparatus sequentially determines, on the basis of the positions of markers as time-sequential feature points (of a plurality of frames), positions at which the markers in the frames are displayed. This makes it possible to display a moving object while the position, direction and size thereof are properly set. Another advantage is that when a plurality of markers are extracted, information relating to the direction and size of the object is retained and the proximal and distal directions of the object and the length of a device (e.g., stent) can be intuitively determined from an image. Since positioning is performed using the plurality of positions of markers and the plurality of display positions, the position and direction of a corrected image to be finally displayed can also be set properly.

Radiography apparatus

An X-ray imaging apparatus includes an X-ray tube (), an FPD (), a holding unit () that holds the X-ray tube and the FPD, which face each other, a table () on which a subject is placed, and a control unit () that controls the movement of the holding unit so as to control an X-ray irradiation direction of the X-ray tube and an X-ray detection direction of the FPD in an interlocking response with a relative position of the table to the X-ray tube and the FPD or based on an operation during X-ray imaging, when the X-ray imaging apparatus performs the X-ray imaging while relatively moving the table with respect to the X-ray tube and the FPD.

X-ray imaging apparatus

[Purpose] To provide a radiographic imaging apparatus capable of quickly acquiring three-dimensional image data of a target-of-interest when performing an operative procedure such as interventional treatment [Solving Means] A region-of-interest extraction unitextracts a predetermined region as a region-of-interest from each of a series of two-dimensional images. The reconstruction unitreconstructs a three-dimensional image of a region including a stent based on each of the images of the portion corresponding to the region-of-interest. That is, since the reconstruction unitreconstructs each of a series of two-dimensional images P using an image of the region-of-interest corresponding to a part of the whole, the time required to reconstruct the three-dimensional image of the region including the stent can be shortened. As a result, since three-dimensional image data can be quickly obtained for the region requiring the reconstruction, the time required for diagnosis can be greatly shortened, which can reduce the burden on a surgeon and a subject.

Radiographic imaging apparatus

This X-ray imaging apparatus () includes an X-ray irradiation detection unit () including an X-ray tube () and an FPD (), a table () on which a subject () is placed, and a control unit () 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.

An X-ray tube and a flat panel X-ray detector (FPD) are constructed movable parallel to each other in the same direction along a body axis which is a longitudinal direction of a patient. The X-ray tube intermittently emits radiation and the FPD detects radiation transmitted through the patient irradiated intermittently whenever the X-ray tube and FPD move every pitch. X-ray images O, O, . . . , O, . . . , and Oare decomposed for every pitch noted above. The decomposed images are composed for each projection angle to obtain projection images P, Pand so on. Therefore, a sectional image with a long field of view in the longitudinal direction can be obtained by carrying out a reconstruction process based on the composed projection images.

Radiographic apparatus

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Kyoto, Japan

Keiichi Goto