Typical picture of a Takayasu's arteritis with massive thickening of the intima, which seems echo-rich, homogennous and very irregular, here very strikingly visible at the right carotid bifurcation, power doppler mode.
The suspected diagnosis of Takayasu's arteritis stems from the typical symptom constellation, where some important clinical hints are the total loss of pulses of the extremities ("pulseless disease"). The diagnosis is strengthened by technical examinations of the vessels (doppler sonography, color doppler, is the best method), direct examination of the vessels via angiography and modern imaging techniques like DSA ("digital substraction angiography"), MRT or CT.
Sometimes other methods, like scintigraphy are used, for example ventilation-perfusion-scintigraphy of the lung to assess the lung vessels or thallium-scintigraphy or coronary angiography ("heart-catheter") to assess heart perfusion.
Source: Ultraschall im Netz (ultrasound on the net)