1. A magnetic resonance system, comprising: a thermal source configured to one of heat a region of interest or cool the region of interest relative to a baseline temperature; a magnetic resonance scanner configured to generate thermographic data from the region of interest; a diagnostic database configured to store at least one preselected temperature change curve characteristic; one or more processors configured to: receive the thermographic data from the magnetic resonance scanner and construct a thermal change curve for each voxel of the region of interest during a period of time when the temperature of the region of interest is returning toward the baseline temperature; and compares characteristics of the constructed temperature change curve with the at least one stored temperature change curve characteristic to identify thermally abnormal voxels; a display device configured to display at least one reconstructed image with the thermally abnormal voxels identified.