Is mask-based stereotactic head-and-neck fixation as precise as stereotactic head fixation for precision radiotherapy?

Conclusion: Thermoplastic mask-based stereotactic head-and-neck fixation allows accurate and reproducible fixation of patients. For intensity-modulated radiation therapy in the upper head-and-neck region, the application of reduced margins around 2-3 mm, which has an implication on organ sparing, is enabled by such an immobilization device.