X-ray diagnostic apparatus

1. An X-ray diagnostic apparatus, comprising:

a generating unit configured to generate a diagram illustrating angle information of an arm of the X-ray diagnostic apparatus;

a display controller configured to perform display control to visualize, together with the diagram generated by the generating unit, at least one of information showing the status of the arm when the arm is at an angle illustrated in the diagram and information showing the status of a subject to be imaged when the arm is at the angle illustrated in the diagram; and

a calculating unit configured to calculate an interference area between the arm and a subject or a couch as information showing the status of the arm based on the current position information of the arm, wherein

the generating unit generates a graph as information showing the angle information, and

the display controller allows, together with the graph, at least any one of the motion area of the arm, an area beyond the motion limit of the arm, and the interference area to be displayed as information showing the status of the arm.

2. The X-ray diagnostic apparatus according to claim 1 , wherein

the generating unit generates a graph as information showing the angle information, and

the display controller allows, together with the graph, an outside view illustrating the position relation between the arm and a subject or a couch to be displayed as information showing the status of the arm.

3. The X-ray diagnostic apparatus according to claim 2 , wherein the display controller allows a position relation with at least one of peripheral equipment and an operator to be further displayed on the outside view as information showing the status of the arm.

4. The X-ray diagnostic apparatus according to claim 1 , wherein

the generating unit generates a graph as information showing the angle information, and

the display controller allows, together with the graph, information showing the angle of the subject to be imaged when the arm is at an angle illustrated in the graph to be displayed as information showing the status of the subject to be imaged.

5. The X-ray diagnostic apparatus according to claim 4 , wherein the display controller allows a three-dimensional image of a main artery with an angle at which a vertical cross section of an aortic valve is nearly perpendicular or horizontal to the display plane of an X-ray image to be displayed as information showing the angle of the subject to be imaged.

6. The X-ray diagnostic apparatus according to claim 4 , wherein the display controller allows a three-dimensional image of a main artery rotated by an angle at which a vertical cross section of an aortic valve is nearly perpendicular or horizontal to the display plane of an X-ray image to be displayed as information showing the angle of the subject to be imaged.

7. The X-ray diagnostic apparatus according to claim 4 , wherein

based on two X-ray images captured in two directions and a three-dimensional medical image, the generating unit generates respective diagrams illustrating the angle information of the arm with which a vertical cross section of an aortic valve is displayed with an angle nearly perpendicular or horizontal to the display plane of an X-ray image, and

when there is any difference between the angle information of the arm based on the two X-ray images and the angle information of the arm based on the three-dimensional medical image, the display controller allows three-dimensional images of a main artery corresponding to both pieces of angle information to be displayed.

8. The X-ray diagnostic apparatus according to claim 1 , wherein the generating unit generates a graph illustrating the angle information of the arm at which a vertical cross section of an aortic valve is nearly perpendicular or horizontal to the display plane of an X-ray image.

9. The X-ray diagnostic apparatus according to claim 8 , wherein the vertical cross section is a plane that is nearly perpendicular to the aortic valve when the aortic valve is closed.

10. The X-ray diagnostic apparatus according to claim 1 , wherein the display controller allows the current position of the arm and a position whose distance from the current position of the arm is shortest out of the angles of the arm at which an aortic valve is displayed with a predetermined angle with respect to the display plane of an X-ray image to be further displayed on the diagram.

11. The X-ray diagnostic apparatus according to claim 1 , further comprising:

an input unit configured to receive an input operation onto a diagram displayed by a predetermined display unit, and

an arm controller configured to move the arm in accordance with the input operation received by the input unit.