Figure 1From: Photodynamic therapy in the therapy for recurrent/persistent nasopharyngeal cancerA: Nasopharynx applicator, B: schematic view of positioning and illumination. 1. Cylindrical diffuser in shielding tube. 2. Target area. 3. Soft palate is shielded. Figure 1 have beenused previously by Nyst et al, 2007 [26]Back to article page