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Fig. 1 | Journal of Cardiovascular Magnetic Resonance

Fig. 1

From: 3D whole-heart grey-blood late gadolinium enhancement cardiovascular magnetic resonance imaging

Fig. 1

Framework of the proposed 3D grey-blood phase sensitive inversion recovery (PSIR) late gadolinium enhancement (LGE) sequence. Two interleaved gradient echo (GRE) volumes with two-point Dixon encoding and 3 × undersampled spiral-like variable density Cartesian trajectory (VD-CASPR) are acquired with IR-preparation and no preparation respectively. Image navigators (iNAVs) are acquired prior to the 3D acquisition to correct for translational respiratory motion. The four echoes are motion corrected to end-expiration and reconstructed with iterative-SENSE. A water/fat separation algorithm is then used to obtain water and fat images for each acquired volume. An intermediate PSIR reconstruction between the in-phase echoes of each acquired volume is performed to estimate the signal polarity which is subsequently applied to the inversion recovery (IR)-prepared water volume to generate a water grey-blood PSIR image. The complementary fat-volume is obtained after water/fat separation of the reference volume

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