Abstract #5057

2D acquisition mode for T1 and T2 estimation using an ellipse-fitting approach on phase cycled bSSFP data

Yulia Shcherbakova¹, Cornelis A.T. van den Berg², Pim T.S. Borman¹, 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

The ellipse fitting approach for simultaneous estimation of the relaxation times T₁ and T₂ from phase-cycled balanced steady-state free precession (PC-bSSFP) has been so far limited to the 3D acquisition mode due to sensitivity to slice profile imperfections. In this work we present the results of a 2D approach which is based on a RF excitation pulse optimization. This minimally affects the ellipse fitting leading to minimal corruption of T₁ and T₂ quantification from 2D PC-bSSFP data.

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