Angiography is commonly used in the diagnosis of Takayasu arteritis,[10] especially in the advanced stages of the disease, when arterial stenosis, occlusion, and aneurysms may be observed.[10] However, angiography is a relatively invasive investigation, exposing patients to large doses of radiation,[10] so is not recommended for routine, long-term monitoring of disease progression in patients with Takayasu arteritis.[10]