Radiation computed tomography apparatus

• US 5,848,126 A
• Filed: 08/26/1996
• Issued: 12/08/1998
• Est. Priority Date: 11/26/1993
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Suzuki, Makoto, Tsuyuki, Masaharu, Fujita, Hidehiro, Fujimoto, Hideki, Komori, Tomoyasu, Hiraoka, Manabu, Maruyama, Yasuo, Hori, Hiroshi, Tomura, Masatoshi, Tachizaki, Hisashi, Hasegawa, Naoko
• Primary Examiner(s): WONG, DON KITSUN
• Application Number:
  US08/703,057
• Time in Patent Office: 834 Days
• Field of Search: 378/4, 378/94, 378/145, 378/146, 378/147, 378/151, 378/208, 378/209, 378/177, 378/178, 378/195, 378/193
• US Class Current: 378/195
• CPC Class Codes: A61B 6/032 Transmission computed tomography [CT]
• CPC Class Codes: A61B 6/035 Mechanical aspects of CT
• CPC Class Codes: A61B 6/12 Arrangements for detecting or locating foreign bodies
• CPC Class Codes: A61B 6/464 involving a plurality of displays
• CPC Class Codes: A61B 6/467 characterised by special input means
• CPC Class Codes: A61B 6/469 for selecting a region of interest [ROI]
• CPC Class Codes: A61B 6/548 Remote control of the apparatus or devices

Abstract

A radiation computed tomography apparatus of this invention includes a couch, a top board which carries the patient and is slidably arranged on the couch, a gantry which has an opening and acquires projection data of a patient by guiding the patient carried on the top board into the opening, reconstruction section for reconstructing the tomographic image of the patient by reconstructing the projection data acquired by the gantry, and adjusting section, arranged on or near the gantry, for adjusting the photographing condition of the patient for obtaining a predetermined tomographic image of the patient.

Claims

1. A radiation computed tomography apparatus for obtaining a tomographic image of a patient, comprising:

a couch which is movable in a predetermined direction;

a top board which carries the patient and is slidably arranged on said couch;

a gantry which has an opening and acquires projection data of the patient by guiding the patient carried on said top board into the opening;

reconstruction means for reconstructing the tomographic image of the patient by reconstructing the projection data acquired by said gantry in real-time;

display means for displaying the tomographic image of the patient reconstructed by said reconstruction means in real-time;

detecting means for detecting at least a direction of an external force applied to one of said top board and said gantry; and

means for driving the one of said top board and said gantry, to which the external force is applied, in the direction of the external force on the basis of a detection value of said detecting means.

2. An apparatus according to claim 1, further comprising:

scan means for scanning the patient while changing a slice width and a slice position upon acquisition of the projection data.

3. An apparatus according to claim 2, further comprising adjusting means, arranged on or near said gantry, for adjusting a photographing condition of the patient for obtaining a predetermined tomographic image of the patient.

4. An apparatus according to claim 3, wherein said couch is arranged on a first side surface side of the opening, and said adjusting means is arranged on or near said gantry on a second side surface side opposite to the first side surface.

5. An apparatus according to claim 3, wherein said gantry and said adjusting means respectively include transmission/reception means and transmit/receive data using said transmission/reception means by one of wireless and wired methods.

6. An apparatus according to claim 2, wherein said display means is arranged at least on or near said gantry.

7. An apparatus according to claim 6, wherein said display means is arranged on said gantry.

8. An apparatus according to claim 6, further comprising an arm having one end attached to said gantry, and wherein said display means is attached to the other end of said arm.

9. An apparatus according to claim 6, further comprising goggles which can be fixed to a head of an operator, and wherein said display means is arranged in said goggles.

10. An apparatus according to claim 1, wherein said gantry has a radiation path at a position separated from said couch with respect to a center of said gantry.

11. An apparatus according to claim 1, further comprising gantry rotation means for rotating said gantry about a vertical axis.

12. An apparatus according to claim 1, wherein said gantry has a radiation path movable along an axis of the opening, further comprising gantry rotation means for rotating said gantry about a vertical axis.

13. A radiation computed tomography apparatus for obtaining a tomographic image of a patient, comprising:

a top board which carries the patient;

a gantry which has an opening and radiation path arranged in the opening, and acquires projection data of the patient by guiding the patient carried on said top board into the opening, wherein the radiation path is arranged near an opposite side of said gantry opposite to the side to which the patient is guided;

detecting means for detecting at least a direction of an external force applied to one of said top board and said gantry; and

means for driving one of said top board and said gantry, to which the external force is applied, in the direction of the external force on the basis of a detection value of said detecting means.

14. An apparatus according to claim 13, wherein said gantry is inclined for an axis perpendicular to a moving direction of the top board.

15. An apparatus according to claim 13, wherein the radiation path moves along an axis parallel to a moving direction of the top board.

16. An apparatus according to claim 13, wherein said couch is arranged on a first side surface side of the opening, and comprising adjusting means for adjusting a photographing condition of the patient for obtaining a predetermined tomographic image of the patient, arranged on or near said gantry on a second side surface side opposite to the first side surface.

17. An apparatus according to claim 13, comprising adjusting means for adjusting a photographing condition of the patient for obtaining a predetermined tomographic image of the patient, wherein said gantry and said adjusting means respectively include transmission/reception means and transmit/receive data using said transmission/reception means by one of wireless and wired methods.