Department of Radiography/Radiotherapy Faculty of Allied Health Sciences University of Peradeniya Peradeniya 20400 Sri Lanka;
Department of Radiography/Radiotherapy Faculty of Allied Health Sciences University of Peradeniya Peradeniya 20400 Sri Lanka;
Department of Radiography/Radiotherapy Faculty of Allied Health Sciences University of Peradeniya Peradeniya 20400 Sri Lanka;
Orthopantomography; cone beam computed tomography; thyroid gland region.;