X-ray diagnostic apparatus

1. An X-ray diagnostic apparatus, comprising:

a first photographic system having a first X-ray tube and a first X-ray detector;

a second photographic system having a second X-ray tube and a second X-ray detector;

a first supporting mechanism supporting said first photographic system;

a second supporting mechanism supporting said second photographic system movably in a direction to come in close proximity to/move away from said first photographic system; and

a control circuit controlling a movement of said second photographic system,

wherein,

when a first operator instruction is inputted, said control circuit automatically moves said second photographic system to a photography position where said first photographic system and a photography center axis cross,

when a second operator instruction is inputted, said control circuit automatically moves said second photographic system to a predetermined evacuation position distant from said photography position, and

when a third operator instruction is inputted, said control circuit automatically moves said second photographic system to a predetermined temporary evacuation position closer to said photography position, than said predetermined evacuation position, and

wherein when said second photographic system is moved to said predetermined temporary evacuation position, said second photographic system is maintained at said predetermined temporary evacuation position until said control circuit receives a subsequent operator instruction.

2. The X-ray diagnostic apparatus according to claim 1 , wherein said predetermined temporary evacuation position is located between said photographing position and said predetermined evacuation position.

3. The X-ray diagnostic apparatus according to claim 1 , wherein said photographing position is located between said predetermined evacuation position and said predetermined temporary evacuation position.

4. The X-ray diagnostic apparatus according to claim 1 , further comprising an operation portion having a button corresponding to a movement of said second photographic system to said photographing position, a button corresponding to a movement of said second photographic system to said predetermined evacuation position, and a button corresponding to a movement of said second photographic system to said predetermined temporary evacuation position.

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

said first supporting mechanism has a floor-standing stand and a C-arm;

said second supporting mechanism has a ceiling traveling rail, a strut suspended from said ceiling traveling rail, and an Ω-arm attached to a lower end of said strut; and

said predetermined temporary evacuation position is a position at which said Ω-arm comes over above said floor-standing stand.

6. The X-ray diagnostic apparatus according to claim 1 , further comprising a diagnostic table on which a subject is laid, wherein:

said first supporting mechanism has a floor-standing stand and a C-arm;

said second supporting mechanism has a ceiling traveling rail, a strut suspended from said ceiling traveling rail, and an Ω-arm attached to a lower end of said strut; and

said predetermined temporary evacuation position is a position at which said Ω-arm comes over above a center or nearly the center of said diagnostic table.

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

said first supporting mechanism has a floor-standing stand and a C-arm supported by said stand in such a manner that swiveling, axial rotation, and slidable rotation are allowed;

said second supporting mechanism has a ceiling traveling rail, a strut suspended from said ceiling traveling rail, and an Ω-arm attached to a lower end of said strut; and

said second photographic system, located at said predetermined temporary evacuation position, together with said (Ω-arm does not interfere with movements including the axial rotation and the slidable rotation but excluding the swiveling.

8. The X-ray diagnostic apparatus according to claim 7 , wherein, while said second photographic system is located at said predetermined evacuation position, said control circuit allows the swiveling, the axial rotation, and the slidable rotation, and while said second photographic system is located at one of said photographing position and said predetermined temporary evacuation position, said control circuit inhibits the swiveling but allows the axial rotation and the slidable rotation.

9. The X-ray diagnostic apparatus according to claim 1 , wherein when said second photographic system is being moved to said predetermined evacuation position, said control circuit places said first photographic system in a disable state, and when said second photographic system reaches said predetermined temporary evacuation position, said control circuit cancels the disable state of said first photographic system.

10. An X-ray diagnostic apparatus, comprising:

a first photographic system having a first X-ray tube and a first X-ray detector;

a second photographic system having a second X-ray tube and a second X-ray detector;

a first supporting mechanism supporting said first photographic system;

a second supporting mechanism supporting said second photographic system movably in a direction to come in close proximity to/move away from said first photographic system; and

a control circuit controlling a movement of said second photographic system,

wherein,

when a first operator instruction is inputted, said control circuit automatically moves said second photographic system to a photography position where said first photographic system and a photography center axis cross,

when a second operator instruction is inputted, said control circuit automatically moves said second photographic system to a predetermined evacuation position distant from said photography position,

when a third operator instruction is inputted, said control circuit automatically moves said second photographic system to a first predetermined temporary evacuation position closer to said photography position than said predetermined evacuation position, and

when a fourth operator instruction is inputted, said control circuit automatically moves said second photographic system to a second predetermined temporary evacuation position, and

wherein when said second photographic system is moved to said first predetermined temporary evacuation position, said second photographic system is maintained at said predetermined temporary evacuation position until said control circuit receives a subsequent operator instruction.

11. The X-ray diagnostic apparatus according to claim 10 , wherein:

said first supporting mechanism has a floor-standing stand and a C-arm;

said second supporting mechanism has a ceiling traveling rail, a strut suspended from said ceiling traveling rail, and an Ω-arm attached to a lower end of said strut; and

said first predetermined temporary evacuation position is a position at which said Ω-arm comes over above said floor-standing stand.

12. The X-ray diagnostic apparatus according to claim 10 , further comprising a diagnostic table on which a subject is laid, wherein:

said first supporting mechanism has a floor-standing stand and a C-arm;

said second supporting mechanism has a ceiling traveling rail, a strut suspended from said ceiling traveling rail, and an Ω-arm attached to a lower end of said strut; and

said second predetermined temporary evacuation position is a position at which said Ω-arm comes over above a center or nearly the center of said diagnostic table.

13. The X-ray diagnostic apparatus according to claim 10 , further comprising an operation portion having a button corresponding to a movement of said second photographic system to said photographing position, a button corresponding to a movement of said second photographic system to said predetermined evacuation position, a button corresponding to a movement of said second photographic system to said first predetermined temporary evacuation position, and a button corresponding to a movement of said second photographic system to said second predetermined temporary evacuation position.

14. The X-ray diagnostic apparatus according to claim 10 , wherein when said second photographic system is being moved to said first predetermined temporary evacuation position or said second predetermined temporary evacuation position, said control circuit places said first photographic system in a disable state, and when said second photographic system reaches said first predetermined temporary evacuation position or said second predetermined temporary evacuation position, said control circuit cancels a disable state of said first photographic system.

15. An X-ray diagnostic apparatus, comprising:

a first photographic system having a first X-ray tube and a first X-ray detector;

a second photographic system having a second X-ray tube and a second X-ray detector;

a first supporting mechanism supporting said first photographic system; and

a second supporting mechanism supporting said second photographic system movably; and

a control circuit configured to move said second photographic system,

wherein,

when a first operator instruction is inputted, said control circuit automatically moves said second photographic system to a photography position where said first photographic system and a photography center axis cross,

when a second operator instruction is inputted, said control circuit automatically moves said second photographic system to a predetermined evacuation position distant from said photography position, and

when a third operator instruction is inputted, said control circuit automatically moves said second photographic system to a predetermined temporary evacuation position closer to said photography position than said predetermined evacuation position, according to a corresponding operator instruction; and

wherein when said second photographic system is moved to said predetermined temporary evacuation position, said second photographic system is maintained at said predetermined temporary evacuation position until said control circuit receives a subsequent operator instruction.

16. The X-ray diagnostic apparatus according to claim 15 , wherein said predetermined temporary evacuation position is located between said photographing position and said predetermined evacuation position.

17. The X-ray diagnostic apparatus according to claim 15 , wherein said photographing position is located between said predetermined evacuation position and said predetermined temporary evacuation position.

18. The X-ray diagnostic apparatus according to claim 15 , further comprising an operation portion having a button corresponding to a movement of said second photographic system to said photographing position, a button corresponding to a movement of said second photographic system to said predetermined evacuation position, and a button corresponding to a movement of said second photographic system to said predetermined temporary evacuation position.

19. The X-ray diagnostic apparatus according to claim 15 , wherein when said second photographic system is being moved to said predetermined evacuation position, said control circuit places said first photographic system in a disable state, and when said second photographic system reaches said predetermined temporary evacuation position, said control circuit cancels a disable state of said first photographic system.