American Society for Laser Medicine and Surgery Twenty-Eighth Annual Conference Kissimmee, Florida April 2-April 6, 2008 Abstracts
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 1009 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0196-8092
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✦ Synopsis
Background and Objective: In a modern world where beauty and youth are desired quickly and cheaply, the Intense Pulsed Light (IPL) source is a popular alternative to non-ablative laser treatment. There are many IPL devices on the market each one claiming their particular source is the most effective with least risk of adverse events. We independently studied numerous IPL devices from different manufacturers to assess how their driving mechanics affect spectral output. Materials and Methods: A calibrated array spectrometer was used to perform time resolved spectral measurements and obtain the ''in contact'' spectral fluence, traceable to national standards. Fast measurement enabled us to view changes in the spectral shape of an IPL both during a pulse and a pulse train. The difference in output at 600 nm compared to 900 nm is indicative of a change in the spectral shape. Results: There were changes in the spectral shape of some IPLs measured in our study. Within an IPL, larger spectral changes were seen at higher fluences, shorter total pulse durations and limited wavelength ranges. An IPL with 2 pulses, 18 ms total pulse duration, limited spectral range and 50 Jcm À2 fluence showed a drop in output between the beginning and end of the pulse train of 61% at 600 nm but only 49% at 900 nm. Accurate calibration meant we were able to measure the fluence for two IPL sources, both of which gave results that were approximately one quarter of the machine stated fluence. Conclusions: The results of this research show that IPL spectral emission varies between devices and can also vary within a device.