Frequently Asked Questions

Get answers to common questions about Thyroid Ultrasound.

A Thyroid Ultrasound is noninvasive. You lie on your back while a sonographer applies gel and glides a handheld transducer over the neck. The scan usually takes fifteen to thirty minutes; images are reviewed by a radiologist and sent to your provider for discussion.

Most people need no special preparation before a Thyroid Ultrasound. Avoid necklaces and wear loose collars. Bring prior thyroid imaging or lab results if available. Inform us if you are pregnant. Continue medications unless your provider instructs otherwise.

A Thyroid Ultrasound detects nodules, cysts, enlargement, and solid masses. It can show suspicious features like irregular borders or increased blood flow and signs of chronic inflammation associated with Hashimoto's. Functional disorders require blood tests, but ultrasound clarifies structural causes.

Ultrasound evaluates structure, not hormone production, so it cannot directly determine underactive (hypothyroid) function. It can identify structural causes like atrophy or autoimmune changes suggesting Hashimoto's. Your clinician will order TSH and free T4 tests to confirm thyroid function.

Images are acquired during the visit, but a radiologist interprets them. Routine reports are typically available within one to three days; urgent findings are communicated sooner. Your provider will review results and recommend follow-up imaging, labs, or biopsy if needed.

Yes — Thyroid Ultrasound is very safe. It uses high-frequency sound waves, not ionizing radiation, and is noninvasive with minimal discomfort. There are virtually no risks; rare issues include minor skin irritation from gel. It is safe during pregnancy and for repeated monitoring.