ヤマキ　タカシ   Yamaki Takashi   八巻　隆    所属   医学部 医学科（附属足立医療センター）    職種   教授
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Evaluation of fluence and pulse-duration on purpuric threshold using an extended pulse pulsed-dye laser in the treatment of port wine stains.
掲載誌名	正式名：The Journal of dermatology 略　 称：J Dermatol ISSNコード：0385-2407(Print)0385-2407(Linking)
巻・号・頁	33(7),pp.473-6
著者・共著者	Kono Taro, Groff William Frederick, Sakurai Hiroyuki, Takeuchi Masaki, Yamaki Takashi, Soejima Kazutaka, Nozaki Motohiro
担当区分	責任著者
発行年月	2006/07
概要	Laser therapy of port-wine stains (PWS) using the extended pulse pulsed-dye laser (EPPDL) is accepted as the optimal approach because the thermal relaxation time for the vessels in PWS is actually 1-10 msec. The purpose of this study is to elucidate the purpuric threshold using the EPPDL for treatment of PWS. One hundred and seventy-seven Japanese patients with PWS were recruited for this study. All the patients were dark-skinned with skin phototype III (n = 103) and IV (n = 74). PWS were treated with the EPPDL with a pulse duration ranging 1.5-10 msec, fluence ranging 9-15 J/cm(2), and a spot size of 7 mm. Cryogen spray cooling (CSC) was fixed to 30 msec of delay and 30 msec of spray duration. Patients returned to our clinic within 1 week after their initial laser therapy and the treatment sites were examined for the evidence of purpura formation. Of the 177 patients, 108 developed purpura. The lowest fluences that caused purpura and were seen in more than 50% of patients were 10 J/cm(2) with a pulse duration of 1.5 msec, 12 J/cm(2) with a pulse duration of 3 msec, 13 J/cm(2) with a pulse duration of 6 msec, and 13 J/cm(2) with a pulse duration of 10 msec. The fluence and pulse duration thresholds were 12.5 J/cm(2) and 1.65 msec, respectively. Because purpura is one of the treatment endpoints when using a pulsed-dye laser for PWS, higher fluences are necessary when using a long pulse duration.
DOI	10.1111/j.1346-8138.2006.00111.x
文献番号	16848819