Non-contrast-enhanced pulmonary vein MRI with a spatially selective slab inversion preparation sequence.

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
Peng HuReza Nezafat

Abstract

We propose a non-contrast-enhanced, three-dimensional, free-breathing, electrocardiogram-gated, gradient recalled echo sequence with a slab-selective inversion for pulmonary vein (PV) MRI. A sagittal inversion slab was applied prior to data acquisition to suppress structures adjacent to the left atrium (LA) and PVs, thereby improving the conspicuity of the PV and LA. Compared with other MR angiography methods using an inversion pulse, the proposed method does not require signal subtraction and the inversion slab is not parallel to the imaging slab. The feasibility of the proposed method was demonstrated in healthy subjects. The inversion slab thickness and inversion time were optimized to be 60 mm and 500 ms, respectively. Compared to conventional gradient recalled echo imaging without inversion, the proposed technique significantly increased the contrast-to-noise ratios between the LA and the right atrium by 20-fold (P < 0.01), increased the contrast-to-noise ratios between the PVs and right atrium by 10-fold (P < 0.03), and increased the contrast-to-noise ratios between the PVs, LA and pulmonary artery by 4-fold (P < 0.01 for both). The signal-to-noise ratios of the PVs and the LA were similar with and without the inversion s...Continue Reading

References

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Citations

Jun 8, 2014·Radiological Physics and Technology·Tomoyuki OkuakiMarc Van Cauteren
Nov 25, 2014·Journal of Cardiovascular Magnetic Resonance : Official Journal of the Society for Cardiovascular Magnetic Resonance·Sébastien RoujolReza Nezafat
Oct 30, 2010·Journal of Magnetic Resonance Imaging : JMRI·Peng HuReza Nezafat
Apr 22, 2011·Journal of Magnetic Resonance Imaging : JMRI·Mehmet AkçakayaReza Nezafat
Sep 20, 2018·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Giulia GinamiClaudia Prieto
Oct 13, 2019·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Jaime S RobbDana C Peters

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