Dynamic cooling of tissue for radiation treatment
First Claim
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1. A method for preventing a light flash during radiation treatment of skin having an epidermal tissue region adjacent a dermal tissue region, the method comprising:
- a) applying a cryogenic fluid to the epidermal tissue region;
b) directing a gas flow in a general direction of the epidermal tissue region subsequent to step a) to remove at least a portion of the cryogenic fluid; and
c) irradiating the skin with a radiation beam to treat the dermal tissue region subsequent to removing at least a portion of the cryogenic fluid.
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Abstract
The present invention features various methods and systems for performing radiation treatment of skin in connection with dynamic cooling of tissue, while minimizing or preventing occurrence of light flash during the treatment.
292 Citations
20 Claims
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1. A method for preventing a light flash during radiation treatment of skin having an epidermal tissue region adjacent a dermal tissue region, the method comprising:
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a) applying a cryogenic fluid to the epidermal tissue region;
b) directing a gas flow in a general direction of the epidermal tissue region subsequent to step a) to remove at least a portion of the cryogenic fluid; and
c) irradiating the skin with a radiation beam to treat the dermal tissue region subsequent to removing at least a portion of the cryogenic fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for preventing light flash during radiation treatment of skin having an epidermal tissue region adjacent a dermal tissue region, the method comprising:
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a) applying a first pulse of cryogenic fluid to the epidermal tissue region for a first time period;
b) waiting a predetermined delay period before applying a second pulse of cryogenic liquid to the epidermal tissue region for a second time period, the delay period being sufficient to allow the first pulse of cryogenic fluid to cool the epidermal tissue region to reach a desired temperature; and
c) irradiating the skin to treat the dermal tissue region during or immediately after application of the second pulse of cryogenic liquid. - View Dependent Claims (17, 18, 19, 20)
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Specification