Objective To observe the effect and the safety of narrow-band ultraviolet B(NB-UVB) in the treatment of psoriasis vulgaris.

目的观察窄谱中波紫外线（NB-UVB）治疗寻常型银屑病的疗效及安全性。

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Narrow-band ultraviolet B (UVB) has better overall repigmentation rates and safety profile than either topical or oral psoralens and ultraviolet A (PUVA).

比起局部用补骨脂素或口服后再照UVA，窄谱紫外线有较好的恢复色素的效果和安全性。

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The estimated ultraviolet radiation attenuation coefficient and DOC concentration all existed markedly positive relationship; but UV-B wave band was higher than UV-A wave band.

估算得到的紫外辐射衰减系数与DOC浓度均存在显著性正相关，但UV - B波段要高于UV - A波段。

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