Fluoroscopy machine with head mounted display

• US 6,608,884 B1
• Filed: 07/19/2000
• Issued: 08/19/2003
• Est. Priority Date: 07/20/1999
• Status: Expired due to Fees

• Current Assignee: Lunar Corporation
• Original Assignee: Lunar Corporation
• Inventors: Ergun, David L., Mazess, Richard B.
• Primary Examiner(s): Dunn, Drew A.
• Assistant Examiner(s): Barber, Therese
• Application Number:
  US09/619,382
• Time in Patent Office: 1,126 Days
• Field of Search: 378/41, 378/42, 378/98.2, 378/98.8, 378/190, 378/98, 378/110, 378/114, 600/425, 600/439, 345/786, 257/51
• US Class Current: 378/98
• CPC Class Codes: A61B 6/4225 using image intensifiers
• CPC Class Codes: A61B 6/462 characterised by constructional features of the display
• CPC Class Codes: A61B 6/547 involving tracking of position of the device or parts of the device
• CPC Class Codes: G02B 27/017 Head mounted

Abstract

A fluoroscopy machine includes an x-ray source and detector mounted in spaced relation to a support arm, an image processor and a display device. The display device includes image optics attached to a head mount wearable by a person, such as a physician or technician. The image displayed by the image optics can be processed by the image processor to present an orientationally accurate image corresponding to the head mount wearer'"'"'s field of view. For example, the image can be processed to correct for angle of rotation, translation and/or perspective distortion.

Claims

1. A fluoroscopy machine comprising:

an x-ray source producing a beam of x-rays along an axis;

a support arm having a first end attached to the x-ray source and having a second end opposite the x-ray source along the axis so as to provide a space along the axis between the first and second ends sufficient to accommodate a human patient;

an x-ray detector attached to the second end of the arm and positioned to receive the x-rays along the axis and provide image electronic signals;

a tracking device providing object location and orientation signals an image processor receiving and processing the image electronic signals and the object location and orientation signals to provide adjusted image signals; and

a display device including;

(i) image optics producing an image from the adjusted image signals;

(ii) a head mount for attaching the image optics to a person'"'"'s head to move therewith and so that the image is displayed to a person wherein the display device is within the person'"'"'s field of view;

wherein the image is adjusted for at least one of rotation, translation and perspective distortion with respect to the display device.

2. The fluoroscopy machine of claim 1 wherein the image optics are opaque blocking the receipt of light by the person from the person'"'"'s field of view in the area of the image.

3. The fluoroscopy machine of claim 2 wherein the image optics and head mount displace the image to the edge of the person'"'"'s field of view.

4. The fluoroscopy machine of claim 1 wherein the image optics are transparent so as to permit the passage of light from the person'"'"'s field of view through the area of the image.

5. The fluoroscopy machine of claim 1 wherein the object location and orientation signals represent an angle of rotation input processed by the image processor so that the image is rotated to the angle of rotation.

6. The fluoroscopy machine of claim 5 wherein the input is the relative angular displacement between the person'"'"'s field of view and a reference fixed with respect to the x-ray detector.

7. The fluoroscopy machine of claim 5 wherein the input is the relative angular displacement between the patient and a reference fixed with respect to an imaged patient.

8. The fluoroscopy machine of claim 1 wherein the object location and orientation signals represent a translation input processed by the image processor so that the image is translated within the field of view of the person.

9. The fluoroscopy machine of claim 8 wherein the input is the relative displacement between the person'"'"'s field of view and a reference fixed with respect to the x-ray detector.

10. The fluoroscopy machine of claim 8 wherein the input is the relative displacement between the patient and a reference fixed with respect to an imaged patient.

11. The fluoroscopy machine of claim 1 wherein the object location and orientation signals represent an image skewing input.

12. The fluoroscopy machine of claim 11 wherein the input is the a relative displacement and orientation between the person'"'"'s field of view and an image plane fixed with respect to the x-ray detector.

13. The fluoroscopy machine of claim 12 wherein the image plane is intersected by the axis.

14. The fluoroscopy machine of claim 11 wherein the input is the relative displacement and orientation between the person'"'"'s field of view and an image plane fixed with respect to the patient.

15. The fluoroscopy machine of claim 14 wherein the image plane is intersected by the axis.