Treatment balloon with beam position detector

Patent metadata

Field	Value
Publication number	US-9345908-B2
Application number	US-201213978109-A
Country	US
Kind code	B2
Filing date	Sep 27, 2012
Priority date	Sep 27, 2012
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

Techniques are generally described for a treatment balloon, and methods and systems effective to detect a position of a beam. The system may include a treatment balloon effective to receive the beam. The treatment balloon may include a shaft and a balloon portion with an open end in communication with the shaft. The balloon portion may be effective to be at least partially filled with a fluid. The treatment balloon may be effective to generate a light wave when the treatment beam is incident on the treatment balloon. A waveguide in the treatment balloon may be effective to receive the light wave. A light detector in optical communication with the waveguide may be effective to detect the light wave. A processor in communication with the light detector may be effective to detect the position of the beam.

First claim

What is claimed is:

1. A method for detecting a position of a proton or x-ray beam, the method comprising:
receiving the proton or x-ray beam by a treatment balloon, where the treatment balloon includes a shaft and a balloon portion with an open end in communication with the shaft, the balloon portion effective to be at least partially filled with a fluid inside of the balloon portion, the treatment balloon including a Cernekov detector effective to generate a light wave in response to detecting charged particles moving faster than the speed of light in the fluid inside of the balloon portion, wherein the charged particles are generated when the proton or x-ray beam is incident upon an outside of the treatment balloon, and the light wave is generated by the Cernekov detector inside the balloon portion;
receiving the light wave by a waveguide in the treatment balloon;
detecting the light wave by a light detector in optical communication with the waveguide; and
detecting the position of the proton or x-ray beam by a processor in communication with the light detector.

2. The method of claim 1 , wherein:
the waveguide is inside the balloon portion; and
the light wave is generated in the fluid.

3. The method of claim 1 , wherein
the waveguide is in the shaft; and
the light wave is generated in the waveguide when the proton or x-ray beam is incident on the waveguide.

4. The method of claim 1 , wherein:
the waveguide is a first waveguide;
the proton or x-ray beam is incident on the balloon portion;
the first waveguide is in the balloon portion;
a first light wave is generated in the fluid;
a second waveguide is in the shaft and in optical communication with the light detector;
a second light wave is generated in the second waveguide when the proton or x-ray beam is incident on the second waveguide; and
the method further comprises detecting the position of the proton or x-ray beam based on light detected from the first waveguide and the second waveguide.

5. The method of claim 4 , wherein the second waveguide includes two or more waveguides with different thicknesses.

6. The method of claim 4 , wherein the first waveguide includes a third waveguide and a fourth waveguide at different positions in the balloon portion; and
detecting the position of the proton or x-ray beam includes detecting an intensity of the light in the third waveguide and detecting an intensity of the light in the fourth waveguide.

7. The method of claim 4 , wherein the second waveguide is insertable into and removable from the shaft.

8. The method of claim 1 , wherein the balloon portion and the shaft are opaque.

9. The method of claim 1 , wherein:
the waveguide is a first waveguide;
the proton or x-ray beam is incident on the balloon portion;
the first waveguide is in the balloon portion;
a first light wave is generated in the fluid;
a second waveguide is on a top and inside of the balloon portion, the second waveguide is in the shaft and in optical communication with the light detector;
a second light wave is generated in the second waveguide when the proton or x-ray beam is incident on the second waveguide; and
the method further comprises detecting the position of the proton or x-ray beam based on light detected from the first waveguide and the second waveguide.

10. The method of claim 9 , wherein the second waveguide includes two or more waveguides with different thicknesses.

11. The method of claim 1 , wherein the light detector is one of a photodiode, a photomultiplier tube, or a charged coupled diode.

12. The method of claim 1 , further comprising partially filling the balloon portion with water and partially filling the balloon portion with air.

13. The method of claim 1 , further comprising moving a position of the proton or x-ray beam in response to detecting the position of the beam.

14. The method of claim 1 , further comprising stopping the proton or x-ray beam in response to detecting the position of the proton or x-ray beam.

15. A treatment balloon comprising:
an opaque shaft;
an opaque balloon portion with an opening in communication with the shaft, the balloon portion effective to be at least partially filled with a fluid;
at least one Cernekov detector effective to generate a light wave in response to the detection of charged particles moving faster than the speed of light in the fluid inside of the balloon portion, wherein the charged particles are generated when a proton or x-ray beam is incident upon an outside of the treatment balloon;
at least one waveguide in the treatment balloon, the waveguide effective to receive the light wave generated by the Cernekov detector inside the balloon portion; and
a light detector in optical communication with the waveguide, the light detector effective to receive and detect light from the waveguide.

16. The treatment balloon of claim 15 , wherein:
the waveguide is a first waveguide in the balloon portion; and
a second waveguide is in the shaft and in optical communication with the light detector.

17. The treatment balloon of claim 16 , wherein the second waveguide includes two or more waveguides with different thicknesses.

18. The treatment balloon of claim 16 , wherein the first waveguide includes a third waveguide and a fourth waveguide at different positions in the balloon portion.

19. The treatment balloon of claim 16 , wherein the second waveguide is insertable into and removable from the shaft.

20. The treatment balloon of claim 15 , wherein:
the waveguide is a first waveguide and is in the balloon portion; and
a second waveguide is on a top and inside of the balloon portion, the second waveguide is in the shaft and in optical communication with the light detector.

21. A system effective to detect a position of a proton or x-ray beam, the system comprising:
a treatment balloon effective to receive the proton or x-ray beam, where the treatment balloon includes a shaft and a balloon portion with an open end in communication with the shaft, the balloon portion effective to be at least partially filled with a fluid inside of the balloon portion, the treatment balloon including a Cernekov detector effective to generate a light wave in response to detecting charged particles moving faster than the speed of light in the fluid inside of the balloon portion, wherein the charged particles are generated when the proton or x-ray beam is incident upon an outside of the treatment balloon, and the light wave is generated by the Cernekov detector inside the balloon portion;
a waveguide in the treatment balloon, the waveguide effective to receive the light wave;
a light detector in optical communication with the waveguide, the light detector effective to detect the light wave; and
a processor in communication with the light detector, the processor effective to detect the position of the proton or x-ray beam.

22. The system of claim 21 , wherein the waveguide is inside the balloon portion.

23. The system of claim 21 , wherein the waveguide is in the shaft.

24. The system of claim 21 , wherein:
the waveguide is a first waveguide and is inside the balloon portion;
a second waveguide is in the shaft and in optical communication with the light detector; and
the processor is effective to detect the position of the proton or x-ray beam based on light detected from the first waveguide and the second waveguide.

25. The system of claim 24 , wherein the s

Assignees

• Empire Technology Dev Llc

Inventors

• Cooke Cameron

Classifications

• G01T1/203

  the detector being made of plastics · CPC title

• A61N5/1067 Primary

  in real time, i.e. during treatment · CPC title

• G01T3/06

  with scintillation detectors · CPC title

• A61N5/1002

  Intraluminal radiation therapy · CPC title

• G01T1/22

  with Cerenkov detectors · CPC title