Fig. 1

a A microcatheter, Excelsior SL-10, was navigated to parent vessels for delivering the Neuroform Atlas stent to cover the wide-neck of the aneurysm. b The Neuroform Atlas stent was being deployed. c The microcatheter was placed just proximal to the Neuroform Atlas deployed. d When the microwire could not be advanced through the stent or was stuck by the struts, a 0.014-in. microwire using its tip flexed into a loop (microwire looping technique) provided easy navigation through the stent, and (e) placed just distal to the aneurysm neck. f Make the tip of the microwire point to the aneurysm neck by using torque and pull the microwire back slowly. Then the tip can be caught by the cell of the stent and inserted into the aneurysm sac. g Following the microwire, the microcatheter was advanced to the neck of the aneurysm. h When the microcatheter could be advanced through the stent or was stuck in the struts, the microcatheter could overcome the thin-flexible struts and be advanced into the aneurysm by pushing the microcatheter very gently against the strut while torqueing and withdrawing the microwire simultaneously