Simultaneous multi-slice T1 mapping using MOLLI with blipped CAIPIRINHA bSSFP

Zakarya Bentatou (1, 2, 3) , Thomas Troalen (2) , Monique Bernard (1) , Maxime Guye (1, 3) , Lauriane Pini (1, 3) , Axel Bartoli (4) , Alexis Jacquier (1, 4) , Stanislas Rapacchi (1, 3) , Frank Kober (1)

1 CRMBM - Centre de résonance magnétique biologique et médicale
2 Siemens Healthcare [France]
3 CEMEREM - Centre d'Exploration Métabolique par Résonance Magnétique [Hôpital de la Timone - APHM]
4 Département de Radiologie [Hôpital de la Timone - APHM]

This study evaluates the possibility for replacing conventional 3slices,3breath-holds MOLLI cardiac T1 mapping with singlebreath-hold 3 simultaneous multi-slice (SMS3) T1 mapping using blipped-CAIPIRINHASMS-bSSFP MOLLI sequence. As a major drawback, SMS-bSSFP presents unique artefacts arising from side-lobe slice excitations that are explained by imperfect RF modulation and bSSFP low flip angle enhancement. Amplitude-only RF modulation (AM) is proposed to reduce these artefacts in SMS-MOLLIcompared to conventional Wong multi-band RF modulation (WM).

Mots clés: Wong modulation; Blipped-CAIPIRINHA bSSFP; CAIPIRINHA; T1 mapping; Simultaneous multi-slice; MOLLI; Amplitude-only modulation

Domaines: Imagerie médicale

Zakarya Bentatou, Thomas Troalen, Monique Bernard, Maxime Guye, Lauriane Pini, et al.. Simultaneous multi-slice T1 mapping using MOLLI with blipped CAIPIRINHA bSSFP. Magnetic Resonance Imaging, 2020, ⟨10.1016/j.mri.2020.03.006⟩. ⟨hal-02547998⟩