X-ray computed tomography apparatus

• US 5,703,921 A
• Filed: 05/29/1996
• Issued: 12/30/1997
• Est. Priority Date: 05/30/1995
• Status: Expired due to Term

• Current Assignee: Toshiba Medical Systems Corporation (Canon Inc.)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Fujita, Hidehiro, Tachizaki, Hisashi
• Primary Examiner(s): Porta, David P.
• Application Number:
  US08/654,675
• Time in Patent Office: 580 Days
• Field of Search: 378/4, 378/15, 378/19, 378/193, 378/195, 378/196, 378/197
• US Class Current: 378/4
• CPC Class Codes: A61B 6/035 Mechanical aspects of CT
• CPC Class Codes: A61B 6/4488 Means for cooling A61B6/045 takes precedence

Abstract

In an X-ray computed tomography apparatus for producing a sectional image of an object, an X-ray computed tomography gantry comprises an X-ray tube unit, an X-ray tube cooling unit, an X-ray detection unit, a signal amplifier unit, a mechanical control unit, and a power source unit. These units are fixed on the rotating base. These units are integrally fixed at portions thereof opposite to portions thereof fixed on the rotating base by a band.

Claims

1. An X-ray computed tomography apparatus comprising:

an X-ray computed tomography gantry for irradiating X-ray to an object to be inspected and for producing a sectional image signal relating to said object, said X-ray computed tomography gantry comprising a rotating base having a shape of disc, a plurality of units fixed on one side of said rotating base for processing X-ray, and fixing means for integrally fixing said plurality of units at portions thereof apart from portions thereof fixed on said rotating base;

control means for controlling movements of said X-ray computed tomography gantry and for image processing said sectional image signal to display the image; and

a couch for carrying said object thereon.

2. An X-ray computed tomography apparatus as claimed in claim 1, wherein said fixing means comprises a cloth band for tying around said plurality of units, said cloth band having unchangeable shape.

3. An X-ray computed tomography apparatus as claimed in claim 1, wherein said fixing means comprises a rigid fixing member for fixing said units adjacent to each other.

4. An X-ray computed tomography apparatus as claimed in claim 3, wherein said fixing means secures said adjacent units at outer periphery thereof.

5. An X-ray computed tomography apparatus as claimed in claim 3, wherein said fixing means secures said adjacent units on surfaces thereof opposite to surfaces thereof fixed on said rotating base.

6. An X-ray computed tomography apparatus as claimed in claim 3, wherein each unit is fixed diametrically opposite to the other units, respectively.

7. An X-ray computed tomography apparatus as claimed in claim 1, wherein said fixing means comprises an annular fixing member disposed on surfaces of said plurality of units opposite to surfaces thereof fixed on said rotating base.

8. An X-ray computed tomography apparatus as claimed in claim 1, wherein said apparatus has a scanning cycle of less than one second per a cycle of one scan.

9. An X-ray computed tomography apparatus comprising:

an X-ray computed tomography gantry for irradiating X-ray to an object to be inspected for producing a sectional image signal relating to said object, said X-ray computed tomography gantry having a plurality of units and a rotating base for fixing said plurality of units thereto, said rotating base having a disc member and a cylindrical member for covering an outer periphery of said disc member, and said plurality of units being fixed into holes formed on said disc member near the outer periphery thereof;

controlling means for controlling movements of said X-ray computed tomography gantry and for image processing said sectional image signal to display the image; and

a couch for carrying said object thereon.

10. An X-ray computed tomography apparatus as claimed in claim 9, wherein said X-ray computed tomography gantry further comprises a fixing gantry and a bearing, which is fixed on said fixing gantry, for rotatably supporting said rotating member on an inner diameter portion thereof.

11. An X-ray computed tomography apparatus as claimed in claim 9, wherein said cylindrical member comprises a hole for lightening and radiating heat.

12. An X-ray computed tomography apparatus as claimed in claim 10, wherein said cylindrical member comprises a hole for lightening and radiating heat.

13. An X-ray computed tomography apparatus comprising:

an X-ray computed tomography gantry for irradiating X-ray to an object to be inspected for producing a sectional image signal relating to said object, said X-ray computed tomography gantry having a plurality of units and a rotating base for fixing said plurality of units thereto, said rotating base having a disc member and a plurality of fixing members formed integrally with said disc member for fixing said plurality of units;

controlling means for controlling movements of said X-ray computed tomography gantry and for image processing said sectional image signal to display the image; and

a couch for carrying said object thereon.

14. An X-ray computed tomography apparatus comprising:

an X-ray computed tomography gantry for irradiating X-ray to an object to be inspected and for producing a sectional image signal relating to said object, said X-ray computed tomography gantry having a rotating base comprising a disc member and a cylindrical member for covering the outer periphery of said disc member, and having a plurality of units being fixed on one side of said disc member and/or on an inner surface of said cylindrical member;

controlling means for controlling movements of said X-ray computed tomography gantry and for processing said sectional image signal to display an image; and

a couch for carrying said object thereon.

15. An X-ray computed tomography apparatus as claimed in claim 14, wherein a stand is provided at a position of cylindrical member to which said unit is fixed, in such manner that a surface of said stand fixed on the inner surface of said cylindrical member is in close contact with the inner surface.