Fig. 4From: Enhanced stent visualization system for percutaneous coronary intervention in patients with chronic kidney disease: effects on contrast media volume and radiation exposureThe ESV system is used to identify vascular calcification. A Identification of calcification to guide predilation under ESV images; (B) The ESV system assists stent positioning with visualization of severe calcification; (C) Angiography without enhanced visualization when calcification is barely distinguishedBack to article page