Reflectance spectrophotometry in the objective assessment of dye laser-treated port-wine stains

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Reflectance spectrophotometry in the objective assessment of dye laser-treated port-wine stains
February 1995
To cite this article: A. TROILIUS, B. LJUNGGREN (1995)
Reflectance spectrophotometry in the objective assessment of dye laser-treated

Abstract
Reflectance spectrophotometry in the objective assessment of dye laser-treated port-wine stains
A. TROILIUS1
1Lund University, Department of Dermatology, University Hospital, S-21401, Malmà Sweden AND B. LJUNGGREN11Lund University, Department of Dermatology, University Hospital, S-21401, Malmà Sweden1Lund University, Department of Dermatology, University Hospital, S-21401, Malmà Sweden

Summary

At present, the treatment of choice for congenital capillary malformations of the port-wine stain type (PWS) is the flashlamp pulsed dye laser. Good results can be obtained in the majority of patients with this technique, but there is a group of poor responders. In the search for predictive tools to determine the therapeutic outcome, we have used a new photoelectric reflectance instrument.

Sixty-six patients with PWS, mainly on the face, were treated with a pulsed dye laser during a 21-month period. Using a hand-held reflectance photometer, erythema indices were obtained for the PWS and normal skin. Based on these indices, a relative blanching effect could be calculated.

The therapeutic result was judged to be excellent in 19, good in 20, fair in 14 and poor in 13 patients. There was a good correlation (r=0?844) between the degree of blanching and the therapeutic result. In the 'excellent' category, an average blanching effect of 47% was present after the first treatment, and this increased to between 75 and 100% after successive treatments. In the 'poor' category, the blanching effect after one treatment averaged 14%, increasing to only 40% after up to six treatments.

It thus seems to be possible to predict the outcome of therapy, which is of considerable help in treatment planning. Reflectance measurements, an objective estimate of blanching, correlate well with the clinical results, and are helpful in monitoring and predicting the therapeutic outcome in dye laser-treated PWS.

This article is cited by:
Henry H. Chan, David S. Y. Wong, W. S. Ho, L. K. Lam, and W. Wei. (2004) The Use of Pulsed Dye Laser for the Prevention and Treatment of Hypertrophic Scars in Chinese Persons. Dermatologic Surgery 30:7, 987̉994
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Chun-Hung Chiu, MPhil, Henry Hin-Lee Chan, FRCP, Wai-Sun Ho, FRCS, Chi-Keung Yeung, MRCP, and J. Stuart Nelson, MD, PhD. (2003) Prospective Study of Pulsed Dye Laser in Conjunction With Cryogen Spray Cooling for Treatment of Port Wine Stains in Chinese Patients. Dermatologic Surgery 29:9, 909̉915
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Simon A Yong-Gee, Habib A Kurwa and Richard J Barlow. (2001) Objective assessment of port-wine stains following treatment with the 585 nm pulsed dye laser. Australasian Journal of Dermatology 42:4, 243̉246
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, C.L.A. Currie and B.E. Monk. (2000) Can the response of port-wine stains to laser treatment be reliably assessed using subjective methods?. British Journal of Dermatology 143:2, 360̉364
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Agneta Troilius, MD, Björn Wrangsjö, MD, and Bo Ljunggren, MD. (2000) Patients with Port-Wine Stains and Their Psychosocial Reactions After Photothermolytic Treatment. Dermatologic Surgery 26:3, 190̉196
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Agneta Troilius. (2000) Treatment of hemangiomas and port-wine stains with emphasis on lasers. Dermatologic Therapy 13:1, 17̉23
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Troilius, WrangsjÖ & Ljunggren. (1998) Potential psychological benefits from early treatment of port-wine stains in children. British Journal of Dermatology 139:1, 59̉65

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