Figure 1From: Two channel passive visualization of a nitinol guidewire with iron markersPhantom images of the nitinol guidewire with three iron-oxide markers (one large, two small) demonstrating reconstruction at -200Hz off-resonance (a), on-resonance (b) and +200Hz off-resonance (c). Image subtraction (d) creates a characteristic dark-bright-dark pattern from the iron markers.Back to article page