The normal endocrine function is primarily for the quality of life of people, irrespective of age, sex, and race. Detrimental thyroid function leads to multiple disorders, including cardiovascular, renal, neurologic, foetal development, and sexual drive. Moreover, if left untreated may aggravate the formation of thyroid nodules and subsequently to cancer. Therefore, periodic assessment of thyroid glandfunction may eliminate these complications and improve the patients' quality of life. In this review, we have discussed the different thyroid disorders, their complications, radiological techniques, and invasive procedures for assessing the thyroid gland.