Abstract
Photodynamic therapy (PDT) is an established modality for cancer treatment and reactive oxygen species explicit dosimetry (ROSED), based on direct measurements of in-vivo light fluence (rate), in-vivo photofrin concentration, and tissue oxygenation concentration, has been proved to be an effective dosimetric quantity which can be used to predict PDT outcome. In this study, ROSED was performed for photofrin-mediated PDT for mice bearing radiation-induced fibrosacorma (RIF) tumor. PDT treatments were performed using single or fractionated illumination to a same total fluence of 135 Jcm-2. The effects of light fractionation on the total reacted [ROS]rx and treatment outcomes were evaluated.
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