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Abstract #3615

Clinical validation of a dedicated motion correction algorithm for cardiac MOLLI series using a quantitative metric

Gaspar Delso1, Laura Farre2, Daniel Lorenzatti3, Santi Sotes3, Adelina Doltra3, Susanna Prat3, Rosario J Perea3, Teresa M Caralt3, José T Ortiz3, and Marta Sitges3
1GE Healthcare, Barcelona, Spain, 2Universitat de Barcelona, Barcelona, Spain, 3Hospital Clínic de Barcelona, Barcelona, Spain

Cardiac T1-mapping methods often require motion correction. The contrast changes intrinsic to the inversion recovery series often used for this purpose can occasionally cause registration errors, resulting in inaccurate T1 values. It has been shown, using a large database of clinical cases, that accounting for those contrast changes markedly increases the robustness of the correction. A new metric of cardiac anatomy alignment had to be defined, in order to automate the quantitative analysis of the database. This metric was shown to correlate with the visual scoring of misalignment in MOLLI series.

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