Skin patch dosimeter

• US 9,833,637 B2
• Filed: 09/10/2015
• Issued: 12/05/2017
• Est. Priority Date: 05/02/2011
• Status: Active Grant

• Current Assignee: AngioDynamics, Inc.
• Original Assignee: Radiadyne LLC (AngioDynamics, Inc.)
• Inventors: Isham, John
• Primary Examiner(s): Green, Yara B
• Application Number:
  US14/849,790
• Publication Number:
  US 20160001094A1
• Time in Patent Office: 817 Days
• CPC Class Codes: A61N 2005/1051 using an active marker markers in general A61B90/39
• CPC Class Codes: A61N 2005/1089 Electrons
• CPC Class Codes: A61N 2005/1096 Elements inserted into the radiation path placed on the patient, e.g. bags, bolus, compensators
• CPC Class Codes: A61N 5/1049 for verifying the position of the patient with respect to the radiation beam
• CPC Class Codes: A61N 5/1064 for adjusting radiation treatment in response to monitoring
• CPC Class Codes: A61N 5/1071 for verifying the dose delivered by the treatment plan
• CPC Class Codes: G01T 1/02 Dosimeters G01T1/15 takes precedence

Abstract

A skin patch sensor having a groove therein to receive a sensor without leaving any air pockets is described. The skin patch sensor also has a water or tissue equivalent material and/or, in some embodiments, a moldable water equivalent material.

Claims

1. A skin sensor patch, said skin sensor patch comprising:

a) a flexible base;

b) a sensor having a proximal sensor tip and a distal adaptor for connecting to a separate reader;

c) said base having a bottom surface having a groove, said proximal sensor tip intimately fitted into said groove without air pockets;

d) said base also having an adhesive layer over said bottom surface and said proximal sensor tip;

e) a protective peelable layer over said adhesive layer; and

,

f) wherein said skin sensor patch is tissue equivalent.

2. The sensor skin patch of claim 1, further comprising a marker for alignment of said skin sensor patch to a target treatment area.

3. The sensor skin patch of claim 2, wherein said sensor is a radiation sensor comprising a plastic scintillating fiber tip directly abutted to an optical fiber without adhesive therebetween, and wherein said sensor is covered by a light opaque jacket.

4. The sensor skin patch of claim 3, wherein said base comprises a material that can be shaped.

5. The sensor skin patch of claim 3, wherein said base comprises a thermoplastic material that can be heated and shaped.

6. The sensor skin patch of claim 1, wherein said sensor is a radiation sensor comprising a plastic scintillating fiber tip optically coupled to an optical fiber, and wherein said sensor is covered by a light opaque jacket.

7. The sensor skin patch of claim 1, further comprising a fiducial marker for alignment of said skin sensor patch to a target treatment area.

8. The sensor skin patch of claim 1, further comprising a visual marker for alignment of said skin sensor patch to a target treatment area.

9. The sensor skin patch of claim 1, further comprising a bottom layer between said bottom surface of said base and said adhesive layer, said bottom layer sealing said proximal sensor tip into said groove.

10. The sensor skin patch of claim 1, wherein said sensor is a radiation sensor.

11. A method of treating a tumor, comprising:

a) attaching the skin patch sensor of claim 6 to the skin of a patient with a tumor;

b) aligning said marker such that said skin patch sensor is reproducibly placed over said tumor;

c) treating said tumor with a radiation dose;

d) measuring a received dosage of radiation with said radiation sensor; and

,

e) adjusting said radiation dose according to said measured received dosage.

12. The sensor skin patch of claim 1, further comprising a second groove and a second sensor intimately fitted into said second groove without air pockets.

13. The sensor skin patch of claim 1, wherein said base is cup-shaped for receiving a bolus, an edge of said cup comprising one or more visual markers or fiducial markers or both.

14. The sensor skin patch of claim 1, wherein said base comprises a moldable material that can be shaped.

15. The sensor skin patch of claim 1, wherein said base comprises a thermoplastic material that can be heated and shaped.

16. The sensor skin patch of claim 1, wherein said base has an upper layer, which is a shaped tissue equivalent material.

17. The sensor skin patch of claim 1, wherein said base has an upper layer, which is a tissue equivalent thermoplastic material that can be heated and shaped.

18. The sensor skin patch of claim 1, wherein said base has an upper capsule attached thereto, said capsule being a flexible material and being filled with a tissue equivalent moldable material that can be shaped.

19. A skin patch dosimeter, said skin sensor patch comprising:

a) a base comprising a flexible shapeable conformal bolus material;

b) a radiation dosimeter comprising a plastic scintillator directly abutting (without adhesive therebetween) a fiber optic cable having a distal adaptor for connecting to a separate dosimeter reader, said plastic scintillator and fiber optic cable inside a light opaque jacket;

c) said base having a bottom surface having a groove, said proximal sensor tip intimately fitted into said groove without air pockets; and

,

d) wherein said skin patch dosimeter is tissue equivalent.

20. The skin patch dosimeter of claim 19, said base also having an adhesive layer over said bottom surface and said proximal sensor tip and a protective peelable layer over said adhesive.

21. The skin patch dosimeter of claim 19, further comprising a marker for alignment of said skin sensor dosimeter to a target treatment area.

22. The skin patch dosimeter of claim 20, further comprising a bottom layer between said bottom surface of said base and said adhesive layer, said bottom layer sealing said proximal sensor tip into said groove.

23. The skin patch dosimeter of claim 19, further comprising a second groove and a second sensor intimately fitted into said second groove without air pockets.

24. The skin patch dosimeter of claim 19, further comprising a second sensor intimately fitted into said groove alongside said first sensor.

25. The skin patch dosimeter of claim 19, wherein said base is cup shaped for receiving said bolus material, an edge of said cup comprising one or more visual markers or fiducial markers or both.

26. The skin patch dosimeter of claim 19, wherein said base has an upper capsule attached thereto, said capsule being a flexible material and being filled with said bolus material.

27. The skin patch dosimeter of claim 19, said moldable bolus material attached to said base via adhesive.

28. A method of treating a tumor, comprising:

a) attaching the skin patch sensor of claim 19 to the skin of a patient with a tumor;

b) shaping said bolus material to control treatment depth before or after step a);

c) aligning said marker such that said skin patch sensor is reproducibly placed over said tumor;

d) treating said tumor with a radiation dose;

e) measuring a received dosage of radiation with said radiation sensor; and

,

f) adjusting said radiation dose according to said measured received dosage to achieve a predetermined target dosage.