Universal radiographic room

• US 5,572,567 A
• Filed: 12/08/1994
• Issued: 11/05/1996
• Est. Priority Date: 12/08/1994
• Status: Expired due to Fees

• Current Assignee: Hologic Incorporated
• Original Assignee: Continental X-Ray Corp. (Thermo Fisher Scientific Incorporated)
• Inventors: Khutoryansky, Oscar, Rosevear, Thomas, Simak, Thomas, Bleser, Dennis, Kojro, Allan
• Primary Examiner(s): Porta, David P.
• Application Number:
  US08/351,617
• Time in Patent Office: 698 Days
• Field of Search: 378/196, 378/197, 378/193, 378/195, 378/198, 378/204, 378/208, 378/209, 378/167, 378/174, 378/177, 378/181
• US Class Current: 378/197
• CPC Class Codes: A61B 6/4283 characterised by a detector unit being housed in a cassette
• CPC Class Codes: A61B 6/4464 the source unit or the detector unit being mounted to ceiling
• CPC Class Codes: A61B 6/467 characterised by special input means
• CPC Class Codes: A61B 6/547 involving tracking of position of the device or parts of the device
• CPC Class Codes: A61B 6/548 Remote control of the apparatus or devices
• CPC Class Codes: A61B 6/588 Setting distance between source unit and detector unit
• CPC Class Codes: H05G 1/30 Controlling

Abstract

A universal radiographic apparatus that allows an operator to select between conventional radiographic mode and linear tomographic mode. In conventional radiographic mode of operation, several automatic modes are provided. An x-ray tube mounted to a tube crane positioned above an elevating table can be accurately controlled in longitudinal and vertical movement, as well as in x-ray tube angulation. In linear tomographic mode, a table bucky is moved laterally in opposition to movement of the tube crane, with angulation keeping the tube aimed at the bucky. In conventional radiographic mode, the system supports an auto bucky mode, where the table bucky automatically tracks tubecrane motion, or an auto table mode, where the tube crane tracks table vertical motion to maintain a fixed SID. In an auto wall mode, the tube crane tracks vertical movement of an associated wall bucky.

Claims

1. Radiographic apparatus operable in conventional radiographic mode or linear tomographic mode at operator discretion comprising:

x-ray tube means for controllably emitting x-rays;

support means for supporting the x-ray tube means and for enabling longitudinal and vertical motion of the x-ray tube means;

x-ray tube angulation means for varying the angle of incidence of the emitted x-rays;

examining table means for supporting a patient undergoing diagnostic radiography;

table bucky means for supporting radiographic media, said table bucky means including longitudinal drive means for moving the table bucky means in a longitudinal direction;

wall bucky means for vertically supporting radiographic media; and

controller means for receiving and implementing an instruction to operate the radiographic apparatus in conventional radiographic mode or linear tomographic mode, said controller means simultaneously controlling longitudinal motion, angulation of the x-ray tube means, and motion of the table bucky means when said linear tomographic mode is selected,

wherein the controller means includes a multi-axis motor controller means for controlling vertical motion of the x-ray tube means, means for sensing vertical position of the wall bucky means and coordinating motion of the x-ray tube means in response thereto and a table elevation controller means for controlling vertical motion of the examining table means in coordination with motion of the x-ray tube means.

2. The radiographic apparatus of claim 1, wherein the x-ray tube means comprises an x-ray tube.

3. The radiographic apparatus of claim 1, wherein the support means comprises a tubecrane.

4. The radiographic apparatus of claim 1, wherein the support means comprises a tubestand.

5. The radiographic apparatus of claim 1, wherein the support means includes position sensor means for sensing longitudinal position of the x-ray tube means.

6. The radiographic apparatus of claim 1, wherein the x-ray tube angulation means includes stepping motor means for changing angular position of the x-ray tube means and angular position sensor means for sensing angular position.

7. The radiographic apparatus of claim 1, wherein the examining table means is an elevating examining table.

8. The radiographic apparatus of claim 1 further including longitudinal drive means comprising stepping motor means for controllably positioning the table bucky means in a longitudinal direction.

9. The radiographic apparatus of claim 8 further including longitudinal position sensor means for sensing longitudinal position of the table bucky means.

10. The radiographic apparatus of claim 1, wherein the wall bucky means further includes vertical position sensor means for sensing vertical position of the wall bucky means.

11. The radiographic apparatus of claim 1, wherein said support means also enables lateral motion of the x-ray tube means and further comprises position sensor means for sensing lateral position.

12. Radiographic apparatus operable in conventional radiographic mode or linear tomographic mode at operator discretion comprising:

x-ray tube means for controllably emitting x-rays;

support means for supporting the x-ray tube means and for enabling longitudinal and vertical motion of the x-ray tube means;

x-ray tube angulation means for varying angle of incidence of the emitted x-rays;

examining table means for supporting a patient undergoing diagnostic radiography;

table bucky means for supporting radiographic media, said table bucky means including longitudinal drive means for moving the table bucky means in a longitudinal direction along the examining table;

controller means for receiving and implementing an instruction to prepare the radiographic apparatus for conventional radiographic mode or linear tomographic mode, said controller means responsive to said instruction to adjust the longitudinal position and angulation of the x-ray tube means, and the position of the table bucky means, as appropriate for said mode.

13. A universal radiographic device comprising:

a vertically movable tubecrane including a vertical tubecrane position sensor;

x-ray tube means supported by the tubecrane;

a vertically movable examining table positioned beneath the tubecrane, the examining table including a table bucky;

control means for exercising control over vertical motion of the tubecrane; and

means for sensing vertical position of the examining table and coordinating movement of the x-ray tube means in response thereto to maintain a pre-determined vertical source-image distance.

14. The universal radiographic room of claim 13 in which the pre-determined vertical source-image distance is 40 inches.

15. A universal radiographic room comprising:

a longitudinally and vertically movable tubecrane including longitudinal and vertical tubecrane position sensors;

an x-ray tube supported by the tubecrane, and associated therewith a mechanism for varying angular position of the x-ray tube, and an angular position sensor;

an examining table positioned beneath the tubecrane, the examining table including a table bucky with a longitudinal drive mechanism and a longitudinal table bucky position sensor;

a wall bucky including a vertical wall-bucky position sensor;

generator control means for exercising control over longitudinal and vertical motions of the tube crane, angular motion and activation of the x-ray tube, and longitudinal motion of the table bucky;

a control panel coupled to the generator control means, the control panel including;

selection means for selecting independent motion of the tubecrane, x-ray tube, and table bucky;

selection means for selecting automatic linear tomographic sweep;

selection means for selecting first automatic radiographic mode wherein the table bucky automatically follows movement of the tubecrane;

selection means for selecting second automatic radiographic mode wherein the tubecrane automatically follows movement of the wall bucky;

selection means for selecting third automatic radiographic mode, wherein the tubecrane automatically follows movement of the elevating table to maintain 40 inches vertical SID; and

display means for displaying mode of operation and tubecrane position information.

16. The universal radiographic room of claim 15, further including a remote control means coupled to the generator control means for selecting modes of operation and displaying information to an operator.

17. The universal radiographic room of claim 16, wherein the remote control is hardwired to the generator control means.

18. The universal radiographic room of claim 16, wherein the remote control is coupled to the generator control means via an infrared communication path.

19. The universal radiographic room of claim 15, wherein the examining table positioned beneath the tube crane is an elevating examining table.

20. The universal radiographic room of claim 15, wherein the generator control means allows an operator manually to position the tubecrane, x-ray generator, and table bucky.

21. Radiographic apparatus comprising:

x-ray tube means for controllably emitting x-rays;

support means for supporting the x-ray tube means and for enabling longitudinal and vertical motion of the x-ray tube means;

x-ray tube angulation means for varying the angle of incidence of the emitted x-rays;

examining table means for supporting a patient undergoing diagnostic radiography;

table bucky means for supporting radiographic media, said table bucky means including longitudinal drive means for moving the table bucky means in a longitudinal direction;

wall bucky means for vertically supporting radiographic media; and

controller means for choosing conventional radiographic mode or linear tomographic mode at operator discretion, said controller means simultaneously controlling longitudinal motion and angulation of the x-ray tube means, said controller means being responsive to selection of said linear tomographic mode to further control motion of the table bucky means while said x-ray tube means emits x-rays,

wherein the controller means includes a multi-axis motor controller means for controlling longitudinal and angulation motion of the x-ray tube means, means for controlling vertical motion of the x-ray tube means, means for sensing vertical position of the wall bucky means and coordinating motion of the x-ray tube means in response thereto, and a table elevation controller means for controlling vertical motion of the examining table means in coordination with motion of the x-ray tube means, and

the radiographic apparatus further includes a table bucky controller means for controlling longitudinal motion of the table bucky means in coordination with motion of the x-ray tube means.

22. The radiographic apparatus of claim 21, wherein the x-ray tube means comprises an x-ray tube.

23. The radiographic apparatus of claim 21, wherein the support means comprises a tubecrane.

24. The radiographic apparatus of claim 21, wherein the support means comprises a tubestand.

25. The radiographic apparatus of claim 21, wherein the support means includes position sensor means for sensing longitudinal position of the x-ray tube means.

26. The radiographic apparatus of claim 21, wherein the x-ray tube angulation means includes stepping motor means for changing angular position of the x-ray tube means and angular position sensor means for sensing angular position.

27. The radiographic apparatus of claim 21, wherein the examining table means is an elevating examining table.

28. The radiographic apparatus of claim 21, wherein the table bucky means further includes longitudinal drive means comprising stepping motor means for controllably positioning the table bucky means in a longitudinal direction.

29. The radiographic apparatus of claim 28, further including longitudinal position sensor means for sensing longitudinal position of the table bucky means.

30. The radiographic apparatus of claim 28, further including vertical position sensor means for sensing vertical position of the wall bucky means.

31. The radiographic apparatus of claim 21, wherein the controller means further includes means for sensing vertical position of the examining table means and coordinating motion of the x-ray tube means in response thereto.

32. Radiographic apparatus operable in conventional radiographic mode or linear tomographic mode at operator discretion comprising:

x-ray tube means for controllably emitting x-rays;

support means for supporting the x-ray tube means and for enabling longitudinal and vertical motion of the x-ray tube means;

x-ray tube angulation means for varying angle of incidence of the emitted x-rays;

examining table means for supporting a patient undergoing diagnostic radiography;

table bucky means for supporting radiographic media, said table bucky means including longitudinal drive means for moving the table bucky means in a longitudinal direction;

wall bucky means for vertically supporting radiographic media; and

controller means for receiving and implementing an instruction to operate the radiographic apparatus in conventional radiographic mode or linear tomographic mode, said controller means simultaneously controlling longitudinal motion, angulation of the x-ray tube means, and motion of the table bucky means, when said linear tomographic mode is selected,

wherein the controller means includes a multi-axis motor controller means for controlling longitudinal and angulation motion of the x-ray tube means, and means for sensing vertical position of the examining table means and coordinating motion of the x-ray tube means in response thereto, and the radiographic apparatus further includes a table bucky controller means for controlling longitudinal motion of the table bucky means in coordination with motion of the x-ray tube means.

33. The radiographic apparatus of claim 32, wherein the x-ray tube means comprises an x-ray tube.

34. The radiographic apparatus of claim 32, wherein the support means comprises a tubecrane.

35. The radiographic apparatus of claim 32, wherein the support means comprises a tubestand.

36. The radiographic apparatus of claim 32, wherein the support means includes position sensor means for sensing longitudinal and vertical position.

37. The radiographic apparatus of claim 32, wherein the x-ray tube angulation means includes stepping motor means for changing angular position of the x-ray tube means and angular position sensor means for sensing angular position.

38. The radiographic apparatus of claim 32, wherein the examining table means is an elevating examining table.

39. The radiographic apparatus of claim 32, wherein the table bucky means includes longitudinal drive means comprising stepping motor means for controllably positioning the table bucky means in a longitudinal direction.

40. The radiographic apparatus of claim 39, wherein the table bucky means further includes longitudinal position sensor means for sensing longitudinal position of the table bucky means.

41. The radiographic apparatus of claim 32, including wall bucky means.

42. The radiographic apparatus of claim 41, wherein the controller means further includes means for sensing vertical position of the wall bucky means and coordinating motion of the x-ray tube means in response thereto.

43. The radiographic apparatus of claim 42, wherein the controller means further includes a table elevation controller means for controlling vertical motion of the examining table means in coordination with motion of the x-ray tube means.

44. Radiographic apparatus comprising:

x-ray tube means for controllably emitting x-rays;

support means for supporting the x-ray tube means and for enabling longitudinal and vertical motion of the x-ray tube means;

x-ray tube angulation means for varying the angle of incidence of the emitted x-rays;

examining table means for supporting a patient undergoing diagnostic radiography;

table bucky means for supporting radiographic media, said table bucky means including longitudinal drive means for moving the table bucky means in a longitudinal direction; and

controller means for choosing conventional radiographic mode or linear tomographic mode at operator discretion, said controller means simultaneously controlling longitudinal motion and angulation of the x-ray tube means, said controller means being responsive to selection of said linear tomographic mode to further control motion of the table bucky means while said x-ray tube means emits x-rays,

wherein the controller means includes a multi-axis motor controller means for controlling longitudinal and angulation motion of the x-ray tube means, and means for sensing vertical position of the examining table means and coordinating motion of the x-ray tube in response thereto.

45. The radiographic apparatus of claim 44, wherein the x-ray tube means comprises an x-ray tube.

46. The radiographic apparatus of claim 44, wherein the support means comprises a tubecrane.

47. The radiographic apparatus of claim 44, wherein the support means comprises a tubestand.

48. The radiographic apparatus of claim 44, wherein the support means includes position sensor means for sensing longitudinal position of the x-ray tube means.

49. The radiographic apparatus of claim 44, wherein the x-ray tube angulation means includes stepping motor means for changing angular position of the x-ray tube means and angular position sensor means for sensing angular position.

50. The radiographic apparatus of claim 44, wherein the examining table means is an elevating examining table.

51. The radiographic apparatus of claim 44, including wall bucky means for vertically supporting radiographic media.

52. The radiographic apparatus of claim 51, wherein the table bucky means further includes longitudinal drive means comprising stepping motor means for controllably positioning the table bucky means in a longitudinal direction.

53. The radiographic apparatus of claim 52, further including longitudinal position sensor means for sensing longitudinal position of the table bucky means.

54. The radiographic apparatus of claim 52, further including vertical position sensor means for sensing vertical position of the wall bucky means.

55. The radiographic apparatus of claim 51, wherein the controller means a multi-axis motor controller means for controlling vertical motion of the x-ray tube means, and further includes means for sensing vertical position of the wall bucky means and coordinating motion of the x-ray tube means in response thereto.

56. The radiographic apparatus of claim 55, wherein the controller means further includes a table elevation controller means for controlling vertical motion of the examining able means in coordination with motion of the x-ray tube means.