Purpose: To determine the stiffness of large arteries in patients with Takayasu's arteritis (TA).
Materials And Methods: A noninvasive ultrasonic method was used to measure Peterson's elastic modulus (Ep), Young's elastic modulus (YM). and the stiffness constant beta of the common carotid arteries in 13 and of the common femoral arteries in 16 patients with TA and in healthy control subjects.