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Abstract We aimed to evaluate the accuracy and repeatability of the T 1, T 2*, and proton density (PD) values obtained by quantitative parameter mapping (QPM) using the ISMRM/NIST MRI system phantom and compared them with computer simulations. We compared the relaxation times and PD obtained through QPM with the reference values of the ISMRM/NIST MRI system phantom and conventional methods. Furthermore, we evaluated the presence or absence of influences other than noise in T 1 and T 2* values obtained by QPM by comparing the obtained coefficient of variation (CV) with simulation results. The T 1, T 2*, and PD values by QPM showed a strong correlation with the measured values and the referenced values. The simulated CVs of QPM calculated for each sphere showed similar trends to those of the actual scans.
Hirano et al. (Wed,) studied this question.
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