Abstract #3950

SNR analysis and sequence parameter optimization for T1 and T2 mapping using an ellipse fitting approach of phase cycled bSSFP data

Yulia Shcherbakova¹, Cornelis A.T. van den Berg², Chrit T.W. Moonen¹, and Lambertus W. Bartels³

¹Center for Imaging Sciences/Imaging Division, University Medical Center Utrecht, Utrecht, Netherlands, ²Dept. of Radiotherapy/Imaging Division, University Medical Center Utrecht, Utrecht, Netherlands, ³Image Sciences Institute/dept. of Radiology, University Medical Center Utrecht, Utrecht, Netherlands

An ellipse fitting approach has been recently proposed for simultaneous estimation of the relaxation times T₁ and T₂ from phase-cycled balanced steady-state free precession (PC-bSSFP). In this work we present an analysis of the SNR sensitivity of the proposed method and optimization of the sequence parameter settings. We demonstrate, that it is feasible to perform an accurate and precise T₁ and T₂ mapping while using an optimal FA and TR combination for realistic SNRs.

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