Fig. 1

Angiography and denervation of the left renal artery. a Three-dimensional reconstruction of computed tomography angiography showing the highly tortuous left renal artery. b Angiography of the left renal artery. c Attempted ablation using an Iberis ablation catheter with a regular guiding catheter alone. d Insertion of a guide extension catheter. e Denervation of the upper branch of the left renal artery using a guide extension catheter. f Denervation of the lower branch of the left renal artery using a guide extension catheter