Imaging modalities used for evaluation of thyroid and parathyroid: Ultrasound Radionuclide studies CT scan CT guided) Functional disorders: Hyperthyroidism Hypothyroidism Hashimoto thyroiditis Inflammations: Thyroid Eye Disease Nodular disorders: Simple goiter Multinodular goiter Thyroid Tumors: Thyroid Adenoma Thyroid Carcinoma Parathyroid Parathyroid Tumours Hyperparathyroidism