The work presented in this session includes papers on PDT dosimetry in both interstitial and superficial applications. In addition to light-based dosimetry, other approaches in monitoring PDT delivery are considered. Applications in interstitial PDT will be discussed

Antimicrobial PDT is attracting great interest for its potential to respond to the emerging threat of antibiotic resistance. The selected talks provide an excellent representation of the current advances in several areas key for the success of this collective endeavour: novel light sources and light-delivery protocols, novel natural and synthetic photodynamic agents, anti-biofim strategies, and new mechanistic insights.

PDT is widely used in dermatology. In this session, we present the clinical application of PDT in some refractory diseases, including precancerous skin lesions and HPV associated diseases and cancer. There are also studies on the mechanism of PDT activating immune response in treatment of these diseases. We also discuss the adverse reaction of PDT for skin diseases and explore the application of a novel photosensitizer.