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KMID : 0357220110230040053
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Journal of Korean Society Physical Therapy
2011 Volume.23 No. 4 p.53 ~ p.58
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The Effect of Pulsed Ultrasound on Skin Inflammatory Reaction Induced by Ultraviolet Irradiation
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Lee Jeong-Woo
Park Soo-Ji
Yoon Se-Won
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Abstract
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Purpose: This study aims to examine the effects of pulsed ultrasound on skin inflammatory reaction induced by ultraviolet irradiation.
Methods: Twenty subjects were selected for this study. Inflammatory reaction was induced by ultraviolet irradiation in two areas of the lumbar region of the subjects. Pulsed ultrasound (3 MHz) was applied to one of the two areas of inflammatory reaction at a pulse ratio of 1:4, intensity of , once a day for 5 min, and pulsed ultrasound was not applied to the other area. Wound color (chromatic red), luminance (gray) and wound contraction (area) were measured using digital imaging processing method.
Results: There was a significant difference in wound color (chromatic red) in the interaction between time and area. There was a significant difference in luminance in the interaction between time and area. There was a significant difference in wound contraction between the two areas.
Conclusion: These results indicate that pulsed ultrasound increased the wound contraction rate and reduced the inflammatory reaction activity such as erythema induced by ultraviolet irradiation.
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KEYWORD
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Pulsed ultrasound, Ultraviolet, Digital image analysis
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