Cryoablation is a minimally invasive treatment option for malignancies in which cell death is induced by freezing tissue with a cryoprobe. However, the extent of the frozen region must be monitored to avoid unnecessary damage to surrounding healthy tissue and to ensure encapsulation of the tumor. One commonly used monitoring method, attenuation-based computed tomography (CT), allows visualization of the ice ball using its hypoattenuating properties compared to unfrozen tissue. However, the contrast between frozen and unfrozen tissue remains low. We show that using a Talbot-Lau interferometer, this contrast can be greatly enhanced by acquiring dark-field images that capture the increasing small-angle scattering caused by the ice crystals formed during the procedure. Our results show that, compared to attenuation, the frozen region is detected significantly better in dark-field radiographs and CT scans of a porcine phantom mimicking breast tissue. This suggests a potential improvement in the accuracy of cryoablation therapy through the use of dark-field imaging, potentially leading to better patient outcomes.