Fig. 3.
Representative cropped coronal images during an in vivo canine prostate cryoablation experiment (a) Reference magnitude image before freezing. The locations of the cryoprobes are labeled. (b) Magnitude image during freezing. The temperature reading of a sensor place ~8 mm from cryoprobe 2 was −21.6°C. The frozen tissue has lower signal intensity (arrow). (c) The R2* map corresponds to image (b). (d) Phase image corresponds to (a). (e) Phase image corresponds to (b). (f) Phase shift image obtained by subtracting (d) from (e) highlights the phase variation in the frozen tissue.