Fig. 2From: Positive contrast spiral imaging for visualization of commercial nitinol guidewires with reduced heatingImage processing algorithm used to isolate the guidewire signal from the background in the positive contrast image. Thresholding (Steps 1, 2 and 3) and selection of elongated connected structures (Step 4 and 5) are displayed. The device signal is overlaid in green on the anatomical image and displayed to the interventionist for procedural guidanceBack to article page