Abstract Purpose To reduce radiation doses to the tongue. a patient-specific semi-customized tongue displacement device (SCTDD) was developed using a 3D printer (3DP) for head and neck (H&N) radiation therapy (RT). Dosimetric characteristics of the SCTDD were compared with those of a standard mouthpiece (SMP). Materials and methods The SCTDD consists of three parts: a mouthpiece. https://oidwnfm8puvv.aioblogs.com/87843272/the-effect-of-cognitive-task-gait-speed-and-age-on-cognitive-motor-interference-during-walking