This chapter discusses the ultrasound diagnosis of carotid artery diseases and complications of femoral access during percutaneous interventions. Anterior circulation, aortic arch, atherosclerosis, branches of aortic arch, cause of cardiovascular morbidity, cerebrovascular anatomy, collateral pathways, femoral access complications, left side vessels, peripheral vascular disease, treatment of ischemic heart disease are types of aortic arch described in details. 32 comprehensive and self-explanatory images are included in this chapter. And 92 references are given at the end of the chapter to facilitate further reading.