Self-gated tissue phase mapping using golden angle radial sparse SENSE

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
Jan PaulVolker Rasche

Abstract

To investigate the combination of Golden Angle Radial Sparse SENSE reconstruction with image-based self-gating (SG) for deriving high-quality TPM data from radial golden angle (GA) k-space data. In 10 healthy volunteers, a self-gated radial GA TPM sequence (TPMSG ) was compared with a prospectively triggered radial TPM acquisition with conventional respiratory (RNAV) compensation (TPMref ). Image quality and velocities were compared for different regularization strengths λ in the CS reconstruction. Acquisitions and retrospective self-gating was successful in all cases. Contrast in TPMSG was superior to TPMref , because the blood saturation bands could be applied with full thickness without interference with the RNAV. Velocities from both acquisitions visually showed the same motion patterns and were quantitatively highly similar (correlation 0.81-0.97 and RMSE 0.08-0.21 cm/s). Strong temporal regularization ( λ∈0.3,0.4) led to reduced velocity peaks in TPMSG . For λ=0.2, image sharpness as well as velocity peaks of TPMSG were comparable to TPMRef . The combination of Golden Angle Radial Sparse SENSE with image-based self-gating allows measurement of velocities of the myocardium with superior black-blood contrast and full covera...Continue Reading

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Citations

Apr 19, 2016·Journal of Magnetic Resonance Imaging : JMRI·Jan PaulVolker Rasche
Jul 21, 2015·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Marta TibilettiVolker Rasche
Sep 1, 2016·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Francisco ContijochWalter R T Witschey
Oct 22, 2019·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Alexander FyrdahlAndreas Sigfridsson
Dec 20, 2019·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·Jeong Hee YoonJeong Min Lee

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