Figure 4
From: Interventional cardiovascular magnetic resonance: still tantalizing
A comparison of passive (A) and active (B) catheter visualization techniques during rtMRI stent angioplasty in a porcine model of aortic coarctation. Panel A uses a passive PTFE-coated 0.035" nitinol guidewire, while panel B uses a loopless active 0.030" guidewire. The platinum-iridium (Cheatham-Platinum, Numed, Inc) stent is crimped on a dilute gadolinium-filled balloon (white arrows). The devices are more conspicuous and the procedures more straightforward using the active guidewire technique [51].