Thyroid Artery Embolisation (TAE) is a minimally invasive, image-guided procedure used to reduce the size and activity of the thyroid gland.

Through a small catheter inserted via the wrist or groin, the arteries supplying the thyroid are selectively targeted. Tiny particles are delivered to reduce blood flow, leading to gradual shrinkage of the gland or nodules over time.

TAE provides an alternative to surgery or radioactive iodine for selected patients with thyroid disease.

Advantages

• No surgical incision

• No stitches

• Performed under local anaesthaesia  and sedation

• Minimally invasive catheter-based procedure

• Short recovery time

• Suitable for larger or more complex thyroid disease

• Can preserve surrounding structures

TAE can be used in the management of:

• Multinodular goitre (MNG)

• Large benign thyroid nodules

• Graves’ disease

• Patients with compressive symptoms from thyroid enlargement

These conditions may cause:

• Neck swelling

• Pressure or discomfort

• Difficulty swallowing or breathing

• Symptoms related to excess thyroid hormone

Thyroid artery embolization may be appropriate for:

• Patients with symptomatic multinodular goitre(MNG)

• Patients with Graves’ disease where other treatments are unsuitable

• Patients who are not ideal candidates for surgery

• Patients seeking a minimally invasive alternative

Careful clinical and imaging assessment is required to determine suitability.

Careful preparation is essential to ensure the procedure is safe, effective, and appropriate for your individual condition.

Prior to treatment, the following will typically be arranged:

• Detailed clinical assessment of your thyroid condition and symptoms

• Review and optimisation of medications in conjunction with your endocrinologist or treating specialist

• Adjustment or temporary cessation of blood thinners where required

• Introduction of specific medications for the pre- and post-procedure period (for example to manage thyroid hormone levels and inflammation)

• Blood tests, including thyroid function and relevant baseline investigations

• A CT scan of the neck arteries to assess vascular anatomy, plan the procedure, and confirm suitability for embolization

• You will be given instructions regarding fasting prior to the procedure

• Most regular medications can be continued unless specifically advised

• Arrange for hospital admission

You will receive detailed, individualised instructions prior to your procedure to ensure everything is optimised for a safe and effective outcome.

The procedure is performed in an angiography suite under local anaesthesia with sedation.

• A small catheter is inserted via the wrist or groin

• The thyroid arteries are selectively identified

• Embolization particles are delivered in a controlled manner

• Blood flow to the thyroid is reduced

The procedure typically takes 1–2 hours. Most patients go home the same day

• Gradual reduction in thyroid size over weeks to months (up to 50% reduction by 3 months and 80% by 12 months)

• Improvement in compressive symptoms

• Improvement in thyroid hormone control in selected patients

The degree of response varies depending on the underlying condition and gland size.

Thyroid artery embolisation is generally safe when performed by experienced operators. Potential risks include:

• Neck discomfort or swelling after the procedure

• Temporary changes in thyroid hormone levels

• Rarely changes in voice quality

• Rare non-target embolization affecting adjacent structures

These risks are minimised through detailed anatomical knowledge and careful technique.

Thyroid artery embolization is a technically demanding procedure requiring a detailed understanding of thyroid vascular anatomy.

Dr Bryan Barry is pioneering Thyroid Artery Embolization (TAE) in Sydney and has a focused interest in minimally invasive treatments for complex thyroid disease.