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Proceedings Paper

Laser Doppler line scanner for monitoring skin perfusion changes of port wine stains during vascular-targeted photodynamic therapy
Author(s): Defu Chen; Jie Ren; Ying Wang; Ying Gu
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Paper Abstract

Vascular-targeted photodynamic therapy (V-PDT) is known to be an effective therapeutic modality for the treatment of port wine stains (PWS). Monitoring the PWS microvascular response to the V-PDT is crucial for improving the effectiveness of PWS treatment. The objective of this study was to use laser Doppler technique to directly assess the skin perfusion in PWS before and during V-PDT. In this study, 30 patients with PWS were treated with V-PDT. A commercially laser Doppler line scanner (LDLS) was used to record the skin perfusion of PWS immediately before; and at 1, 3, 5, 7, 10, 15 and 20 minutes during V-PDT treatment. Our results showed that there was substantial inter- and intra-patient perfusion heterogeneity in PWS lesion. Before V-PDT, the comparison of skin perfusion in PWS and contralateral healthy control normal skin indicated that PWS skin perfusion could be larger than, or occasionally equivalent to, that of control normal skin. During V-PDT, the skin perfusion in PWS significantly increased after the initiation of V-PDT treatment, then reached a peak within 10 minutes, followed by a slowly decrease to a relatively lower level. Furthermore, the time for reaching peak and the subsequent magnitude of decrease in skin perfusion varied with different patients, as well as different PWS lesion locations. In conclusion, the LDLS system is capable of assessing skin perfusion changes in PWS during V-PDT, and has potential for elucidating the mechanisms of PWS microvascular response to V-PDT.

Paper Details

Date Published: 20 November 2014
PDF: 6 pages
Proc. SPIE 9268, Optics in Health Care and Biomedical Optics VI, 92681Y (20 November 2014); doi: 10.1117/12.2071487
Show Author Affiliations
Defu Chen, Beijing Institute of Technology (China)
Jie Ren, Chinese PLA General Hospital (China)
Ying Wang, Chinese PLA General Hospital (China)
Ying Gu, Chinese PLA General Hospital (China)

Published in SPIE Proceedings Vol. 9268:
Optics in Health Care and Biomedical Optics VI
Qingming Luo; Xingde Li; Ying Gu; Yuguo Tang, Editor(s)

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