Quantitative mapping of T2, T1ρ, adiabatic T1ρ, and adiabatic T2ρ relaxation times may be useful to assess ischemic injury to the femoral head. In this work, we investigated whether these relaxation times are sensitive in detecting compositional changes to the primary spongiosa (the region of the metaphysis adjacent to the growth plate) following ischemic injury to the femoral head in a piglet model. We found that T1ρ and adiabatic T2ρ decreased in the primary spongiosa following ischemic injury to the femoral epiphysis, which suggests these methods may be useful to assess femoral head growth disturbances following ischemic injury.
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