Thyroid/neck Ultrasound Scan

What the Scan Is and Why It Matters

• Real-time imaging: Sound waves bounce off tissues to build live pictures on a screen.
• No radiation: Safe for babies, pregnant women, and the elderly.
• Early detection: Spots nodules as small as 2 mm—years before they can be felt.

How It Compares to Other Imaging Options

Definition and Technology Used

High-frequency sound waves (3–15 MHz) are sent into the neck by a handheld probe. Echoes return and are translated into a real-time image on the monitor.

Difference Between Thyroid and Full Neck Ultrasound

• Thyroid-focused: Examines only the thyroid gland (both lobes & isthmus).
• Full neck ultrasound: Includes salivary glands, lymph nodes, carotid arteries, and soft tissues.

• Thyroid size & volume – >18 ml in women or >25 ml in men may signal goitre.
• Nodule characteristics – size, shape (round vs taller-than-wide), margins, calcifications.
• Cervical lymph nodes – size, cortex thickness, loss of fatty hilum.
• Vascularity patterns – peripheral vs central blood flow.

• Investigate palpable neck lumps felt by you or your doctor.
• Monitor known nodules every 6–12 months for growth.
• Guide fine-needle aspiration (FNA) biopsy with real-time needle tracking.
• Evaluate underlying causes of hyperthyroidism or hypothyroidism.

Symptoms That Trigger Referral

• Palpable lumps or swelling
• Persistent hoarseness or trouble swallowing
• Visible neck asymmetry when looking in the mirror

High-Risk Groups

• Family history of thyroid cancer
• Abnormal TSH, T3, T4 on blood tests
• History of thyroiditis or goitre

Routine Screening Scenarios

• Annual follow-up for known nodules
• Pre-surgery mapping or post-surgery monitoring

• Quick: 15–20 minutes door-to-door.
• Painless: Only gentle pressure from the probe.
• Cost-effective: Up to 50 % cheaper than CT/MRI.
• Zero downtime: Resume work or drive immediately.

• Thyroid nodules – distinguish benign colloid nodules from suspicious solid lesions.
• Goitre – diffuse or multinodular enlargement.
• Thyroiditis – Hashimoto’s shows heterogeneous “pseudonodular” pattern.
• Neck cysts or abscesses – anechoic (black) fluid-filled structures.
• Enlarged lymph nodes – reactive vs malignant signs.

• Clothing: Wear a loose collar or V-neck; avoid turtlenecks.
• Jewellery: Remove necklaces and scarves before entering the scan room.
• Fasting: Not required—eat and drink normally.

• Valid doctor referral or prescription.
• Previous thyroid reports (blood tests, prior scans) if available.
• Patient ID and updated contact details for digital report delivery.

• Any time of day – the thyroid does not fluctuate with meals or hormones.
• Preferably before invasive tests like FNA or surgery to plan next steps.

• All ages: Newborns with congenital hypothyroidism to elderly with multinodular goitre.
• Pregnancy & breastfeeding: 100 % safe—no radiation or contrast needed.

1. Check-in & consent at Cadabams Diagnostics reception.
2. Positioning: Lie on your back with a small pillow under your shoulders to extend the neck.
3. Gel application: Warm, water-based gel ensures smooth probe contact.
4. Scanning: The sonographer moves the transducer across your neck for 10–15 minutes.
5. Wipe-off & report: Gel is removed; preliminary findings handed to you instantly.

• Inform staff if you had recent neck surgery or biopsy—scar tissue may need special views.
• Report any contrast allergies if a contrast-enhanced study is planned (rarely required).

• No radiation exposure – safe for all ages and stages of pregnancy.
• Operator-dependency – image quality hinges on the sonographer’s skill; at Cadabams Diagnostics, every scan is done by certified specialists.
• Limitations – may miss microscopic lesions <2 mm or deep-seated parathyroid glands.