The purpose of this calculator is to estimate T1rho precision and optimal TSL sampling schedules for quantitative T1rho mapping. The following mono-exponential decay signal model is assumed: S = S0 * exp(-TSL/T1rho). T1rho and TSL can be optionally substituted for other parameters (e.g., T2 and TE). Calculator details are described in the following work (please cite):

Johnson CP, Thedens DR, Magnotta VA. Precision-guided sampling schedules for efficient  T1rho mapping. J Magn Reson Imaging (epub).