MRI leverages multiple modes of contrast to characterize stroke. Acute phase stroke detection has focused on multiparametric MRI contrasts such as T2-weighting (T2w), apparent diffusion coefficient (ADC), and sodium level. Evaluation of these contrasts with theranostic cell tracking during the subacute recovery phase at ultrahigh field has not been investigated to a similar extent. Here multiparametric MRI evaluation of ADC, 23Na, and MPIO stem cell tracking in a rodent MCAO model at 21.1T was used to determine parametric correlations and receiver operator performance. Differential parametric time-dependence and sensitivities are observed that inform future high-and low field studies of stroke recovery.