1. Figure 11a. Takayasu arteritis in a 23-year-old woman with light-headedness, arm claudication, and shortness of breath. (a) Right and left ABIankle-brachial indexs are markedly elevated, at 2.04 and 2.11, respectively. (b) Maximum intensity projection candy-cane view of the aorta shows irregularity of the right brachiocephalic artery (RBC), occlusion of the left common carotid artery (LCC), and irregularity and occlusion of the left subclavian artery (LS) (arrowheads). The image was acquired with the blood-pool agent gadofosveset and rendered with 3Dthree-dimensional software.