@article {BAEK579, author = {SEUNGHYEOP BAEK and SOHYUN AHN and EUNBIN JU and NURI HYUN JUNG}, title = {Customized 3D Bolus Applied to the Oral Cavity and Supraclavicular Area for Head and Neck Cancer}, volume = {35}, number = {1}, pages = {579--584}, year = {2021}, doi = {10.21873/invivo.12294}, publisher = {International Institute of Anticancer Research}, abstract = {Background/Aim: In this study, a new method to create a customized three-dimensional (3D) bolus by accurately considering the anatomy of an individual patient is demonstrated. Patients and Methods: A 3D bolus structure was created from an extended planning target volume (PTV) to reduce an inevitable skin reaction. In addition, during computed tomography simulation in patients with oral cavity cancers, a balloon was inserted into the mouth of a patient to secure space, and then the area surrounding the balloon was designed into a 3D bolus structure. Results: For patients with head and neck cancers, a customized 3D bolus can reduce the unnecessary skin dose by 14.4\% compared to a commercial bolus. For patients with oral cavity cancer, the PTV and tongue doses were 93.8\% and 8\% of the prescribed dose, respectively. Conclusion: The customized 3D bolus enables effective skin sparing and full coverage of the target area.}, issn = {0258-851X}, URL = {https://iv.iiarjournals.org/content/35/1/579}, eprint = {https://iv.iiarjournals.org/content/35/1/579.full.pdf}, journal = {In Vivo} }