Live view camera for radiation therapy

Patent metadata

Field	Value
Publication number	US-11590366-B2
Application number	US-202117336037-A
Country	US
Kind code	B2
Filing date	Jun 1, 2021
Priority date	Jun 9, 2020
Publication date	Feb 28, 2023
Grant date	Feb 28, 2023

Abstract

An apparatus for use with a medical system, the medical system comprising a medical device configured to treat and/or image a patient, includes: a camera configured to capture an image of a first mirror, wherein the image of the first mirror contains an image of at least a part of the patient and/or an image of at least a part of the medical system; wherein the camera comprises electronics that are not radiation-hard.

First claim

What is claimed:

1. An apparatus for use with a medical system, the medical system comprising a medical device configured to at least one of treat a patient or image the patient, the apparatus comprising:
a camera configured to capture an image of a first mirror; and
a processor configured to receive an image frame comprising the image of the first mirror from the camera and remove a part of the image frame that does not contain the image of the first mirror,
wherein the image of the first mirror contains at least one of an image of at least a part of the patient or an image of at least a part of the medical system.

2. The apparatus of claim 1 , wherein the camera comprises electronics that are not radiation-hard or that are partially radiation-hard.

3. The apparatus of claim 1 , further comprising a shielding covering a part of the camera, wherein the shielding is configured to block at least some radiation resulted from an operation of the medical device.

4. The apparatus of claim 3 , wherein the first mirror is removably coupled to the camera such that a relative orientation between the first mirror and the camera is selectively adjustable.

5. The apparatus of claim 3 , wherein the shielding comprises an opening aligned with a viewing path of the camera, wherein the opening is configured to allow the camera to view the first mirror.

6. The apparatus of claim 1 , wherein the processor is also configured to split the image of the first mirror into sub-images.

7. The apparatus of claim 1 , wherein the processor is configured to process the image frame from the camera to monitor a position of the patient, to monitor a physiological state of the patient, to monitor a position of a component of the medical system, to prevent a collision between the medical device and the patient, to prevent a collision between the medical device and a patient support, or any combination of the foregoing.

8. The apparatus of claim 1 , wherein the first mirror comprises an asymmetric mirror.

9. The apparatus of claim 1 , wherein the camera is also configured to capture an image of a second mirror.

10. The apparatus of claim 9 , wherein the first mirror and the second mirror have different respective curvatures.

11. The apparatus of claim 9 , wherein the first mirror has a planar configuration that is rectilinear or curvilinear, and the second mirror has a partial spherical shape, a partial aspherical shape, a partial or a complete symmetrical cone shape, or a partial or a complete asymmetrical cone shape.

12. The apparatus of claim 9 , wherein the image frame comprises the image of the first mirror and the image of the second mirror.

13. The apparatus of claim 12 , wherein:
the image of the first mirror contains a first scenery image reflected off from the first mirror;
the image of the second mirror contains a second scenery image reflected off from the second mirror; and
the processor is configured to process the first scenery image and the second scenery image using different respective processing algorithms.

14. The apparatus of claim 1 , wherein the medical device is a treatment machine or an imaging machine, and wherein the camera is configured to be mounted to a patient support in the medical system, to the treatment machine, or to the imaging machine.

15. The apparatus of claim 1 , wherein the camera is configured to be mounted directly or indirectly to a wall, a ceiling, a beam, or a column.

16. An apparatus for use with a medical system, the medical system comprising a medical device configured to at least one of treat a patient or image the patient, the apparatus comprising:
a camera configured to capture an image of a first mirror, wherein the image of the first mirror contains at least one of an image of at least a part of the patient or an image of at least a part of the medical system; and
a processor configured to receive an image frame from the camera, the image frame comprising the image of the first mirror,
wherein the processor is also configured to remove a part of the image frame that does not contain the image of the first mirror, extract the image of the first mirror from the image frame, and process the image of the first mirror to monitor a position of the patient, to monitor a physiological state of the patient, to monitor a position of a component of the medical system, to prevent a collision between the medical device and the patient, to prevent a collision between the medical device and a patient support, or any combination of the foregoing.

17. A method performed by an apparatus that is configured for use with a medical system, the medical system comprising a medical device configured to at least one of treat a patient or image the patient, the method comprising:
capturing an image of a first mirror, wherein the image of the first mirror contains at least one of an image of at least a part of the patient or an image of at least a part of the medical system;
receiving an image frame comprising the image of the first mirror;
removing a part of the image frame that does not contain the image of the first mirror; and
processing the image of the first mirror to monitor a position of the patient, to monitor a physiological state of the patient, to monitor a position of a component of the medical system, to prevent a collision between the medical device and the patient, to prevent a collision between the medical device and a patient support, or any combination of the foregoing.

Assignees

• Varian Med Sys Inc

Inventors

• Thieme-Marti Stefan J
• Lehmann Mathias

Classifications

• A61N2005/1059

  using cameras imaging the patient · CPC title

• A61N2005/1094

  Shielding, protecting against radiation · CPC title

• A61N5/1049 Primary

  for verifying the position of the patient with respect to the radiation beam · CPC title