title: [Derma spectrometer measurement for port wine stain].
abstract: OBJECTIVE
  Twenty cases of PWS were measured by means of Derma Spectrometer with the goal of estimating PWS condition.
  
  
  METHODS
  Twenty patients of PWS were chosen randomly in this study. Derma Spectrometer was used to detect lesion and control sides pre- and post- laser treatment.
  
  
  RESULTS
  The mean normal skin's M-Index was (36.18+/-6.45)%, E-Index was (1.39+/-4.85)%. Lesion's M-Index and E-Index were (44.85+/- 6.61)%, (13.05+/-6.30)%. Lesion's M-Index and E-Index after one treatment were (41.00+/-5.30)% and (9.04+/-4.98)%. Significant difference existed between normal and lesion's M-Index. Also there were difference among normal skin, lesion and lesion treated.
  
  
  CONCLUSIONS
  There is difference between normal and lesion M-Index. But none for lesion and lesion treated. Different E-Index were among normal skin, lesion and treated lesion. The E-Index was decreased at treated lesion. It suggested blanch of PWS after laser treatment. Derma spectrometer has the role of evaluation of PWS.
authors.affiliation: Department of Oral Maxillofacial Surgery, Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China.
authors.forename: G Y
authors.initials: GY
authors.lastname: Zhou
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Zhang