Figure 1: Hepatic artery angiography via transauricular arterial access. (a) Puncture of auricular artery. Guidewire inserted into auricular artery. (b) Vascular sheath advanced into auricular artery. Microcatheter inserted into central auricular artery. (c) Roadmap image of auricular and common carotid artery. (d) Selective catheterization and angiography of hepatic artery