A quantitative evaluation of pigmented skin lesions using the L*a*b* color coordinates
Yonsei Medical Journal
;
: 333-339, 2000.
Artigo
em Inglês
| WPRIM
| ID: wpr-99746
ABSTRACT
The evaluation of pigmentary skin lesions by clinical doctors has been based on subjective and qualitative judgements. Observations have mostly relied on visual inspection, making the effects of treatment difficult to evaluate with any precision. For this reason there is a real need for an objective method to evaluate prognosis after treatment. Recent scientific measurements such as reflectance spectrophotometry and reflectance colorimetry have provided accurate quantitative color information about skin lesions, but these techniques are costly and difficult to apply in the clinical field. The purpose of this study was to develop a simple and cost-effective way of evaluating treatment results. We have developed a software program using the L*a*b* color coordinate system to quantify the effect of treatment and have successfully demonstrated its clinical usefulness. Our method compares the relative color difference between normal skin and skin lesions before and after treatment, instead of measuring the absolute color of skin lesions. The accuracy of our quantitative color analysis was confirmed by the simulated images of hemangioma and ota nevus. Clinical efficacy was also confirmed through a blind test involving 3 clinicians who were asked to grade the treatment effects of 13 cases of hemangioma and 7 cases of ota nevus. These subjective clinical grades correlated well with the treatment results obtained using the proposed color analysis system (Correlation coefficient = 0.84).
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Transtornos da Pigmentação
/
Neoplasias Cutâneas
/
Software
/
Pigmentação da Pele
/
Nevo de Ota
/
Avaliação de Resultados em Cuidados de Saúde
/
Cor
/
Hemangioma
Tipo de estudo:
Ensaio Clínico Controlado
/
Pesquisa qualitativa
Limite:
Feminino
/
Humanos
Idioma:
Inglês
Revista:
Yonsei Medical Journal
Ano de publicação:
2000
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS