Thyroid ultrasound is a diagnostic procedure that uses high-frequency sound waves to produce images of the thyroid gland. This examination allows the doctor to see the structure of the thyroid gland precisely, as well as to detect possible changes such as nodules, cysts or other irregularities that may indicate thyroid disease. Ultrasound is non-invasive, painless and safe, which makes it a very useful tool in diagnosing thyroid problems.
A thyroid ultrasound examination is performed with the patient lying on their back, and the doctor places a gel on their neck to allow better transmission of sound waves. Then, the doctor uses a probe that emits ultrasound waves and receives the returned waves to obtain an image of the thyroid gland. During the examination, the patient should be relaxed and not move.
A thyroid ultrasound is recommended in cases where there is suspicion of thyroid disease, such as hypothyroidism, hyperthyroidism or autoimmune diseases. Finally, ultrasound is a useful diagnostic method in cases where there is a family history of thyroid disease.
A thyroid ultrasound usually takes 10 to 15 minutes, depending on the complexity of the examination and how detailed all the structures of the gland need to be examined.