**Author details**

Lekha Madhavan Nair, Rejnish Ravikumar, Malu Rafi, Mullangath Prakasan Aparna, Zuzaki Sharafuddin, John Mohan Mathew and Kainickal Cessal Thommachan\* Department of Radiation Oncology, Regional Cancer Centre, Thiruvananthapuram, Kerala, India

\*Address all correspondence to: drcessalthomas@gmail.com

© 2022 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

*External Beam Radiotherapy in Differentiated Thyroid Cancer DOI: http://dx.doi.org/10.5772/intechopen.108466*
