Figure 4
Images of a guidewire in a phantom comparing spin echo, positive contrast and bSSFP contrast. a) Spin echo image, b) dephased positive contrast image and c) refocused bSSFP image of a nitinol guidewire in a CuSO4 phantom. A red dot indicating the guidewire tip location determined from the spin echo image is superimposed on all images. The acrylic posts supporting the guidewire in place are also visible (a, c).