Surface markers for guiding cylindrical diffuser fiber insertion in interstitial photodynamic therapy of head and neck cancer

Image‐based treatment planning can be used to compute the delivered light dose during interstitial photodynamic therapy (I‐PDT) of locally advanced head and neck squamous cell carcinoma (LA‐HNSCC). The objectives of this work were to evaluate the use of surface fiducial markers and flexible adhesive grids in guiding interstitial placement of laser fibers, and to quantify the impact of discrepancies in fiber location on the expected light dose volume histograms (DVHs).

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