GHOST reference template Caliber137 (UNITY phantom)

Reference template data for the CaliberMRI Model 137 Mini Hybrid phantom (acquired at 3T) for use with the ghost python framework. This data is downloaded from the <code>ghost</code> toolbox as part of the setup process.<b>Note about quantitative values</b>The phantom specs in the .json file (concentrations, T1, T2, ADC values, and LC thermometer transition levels) are batch specific and might not apply to your phantom. This is primarily intended for the UNITY project. For quantitative analysis of the phantom, please obtain reference data specific to your phantom and modify the .json file as necessary.