Single-breath-hold thin-slice gadoxetic acid-enhanced hepatobiliary MR imaging using a newly developed three-dimensional fast spoiled gradient-echo sequence

Hori, Masatoshi; Kim, Tonsok; Onishi, Hiromitsu; Takei, Naoyuki; Wakayama, Teruhiko; Sakane, Makoto; Dia, Aliou Amadou; Tsuboyama, Takahiro; Nakamoto, Atsushi; Tatsumi, Mitsuaki; Tomiyama, Noriyuki

doi:10.1016/j.mri.2015.11.014

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…Meanwhile, Turbo-LAVA is a modified LAVA sequence based on 3D SPGR sequence that can reduce acquisition time through the following factors: 2D parallel imaging method by auto-calibrating reconstruction for Cartesian sampling, denser data sampling performed around the center of the k-space, and the optimization of magnetic field gradient pulse. [10][11][12] Another strategy for transient respiratory motion artifact is multiple arterial phase acquisition. It could provide at least one image set with reduced or no artifact.…”

Section: Introductionmentioning

confidence: 99%

Transient Respiratory-motion Artifact and Scan Timing during the Arterial Phase of Gadoxetate Disodium-enhanced MR Imaging: The Benefit of Shortened Acquisition and Multiple Arterial Phase Acquisition

et al. 2021

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To investigate whether shortened acquisition or multiple arterial phase acquisition improves image quality of the arterial phase compared with conventional protocol.Methods: This retrospective study was approved by the relevant Institutional Review Board. A total of 615 consecutive patients who underwent gadoxetate disodium-enhanced MRI including one of the following three sequences in three different periods were included: (i) conventional liver acquisition with volume acceleration (LAVA) (between October 2014 and January 2015, n = 149), (ii) Turbo-LAVA (between March and August 2016, n = 216), and (iii) differential sub-sampling with Cartesian ordering (DISCO) (between January and September 2015, n = 250). We monitored the respiratory bellows waveform during breath holding for each patient and recorded breath-hold fidelity of the patients. Two radiologists independently evaluated the degree of respiratory artifact and scan timing on the arterial phase and compared them between the three protocols (i.e., conventional LAVA, Turbo-LAVA, and DISCO), with conventional LAVA as control. Results:The ratio of patients with breath-hold failure was not significantly different among the three protocols (P = 0.6340 and 0.1085). Respiratory artifact was significantly lower in DISCO than in conventional LAVA (P = 0.0424), while there was no significant difference between Turbo-LAVA and conventional LAVA (P = 0.2593). The ratio of adequate scan timing and diagnosable image defined as no or mild artifact and adequate scan timing were higher in DISCO than in conventional LAVA (P = 0.0025 and 0.0019), while there was no significant difference between Turbo-LAVA and conventional LAVA (P = 0.0780 and 0.0657). Conclusion:Compared with conventional protocol, multiple arterial phase acquisition (DISCO) obtained a higher number of diagnosable images by reducing respiratory motion artifact and optimizing the scan timing of arterial phase.

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Section: Introductionmentioning

confidence: 99%

Transient Respiratory-motion Artifact and Scan Timing during the Arterial Phase of Gadoxetate Disodium-enhanced MR Imaging: The Benefit of Shortened Acquisition and Multiple Arterial Phase Acquisition

et al. 2021

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Impact of adaptive image receive coil technology for liver MR imaging at 3.0 Tesla: Intraindividual comparison with use of conventional coil

Fukui

Onishi

Nakamoto

et al. 2022

European Journal of Radiology

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Evaluation of Image Quality in Three-dimensional Fat-suppressed T<sub>1</sub>-weighted Images with Fast Acquisition Mode for Upper Abdomen

Saito

Tanaka²,

Tarewaki³

et al. 2016

Nippon Hoshasen Gijutsu Gakkai Zasshi

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SummaryWe compared the uniformity of fat-suppression and image quality using three-dimensional fat-suppressed T1-weighted gradient-echo sequences that are liver acquisition with volume acceleration (LAVA) and Turbo-LAVA at 3.0T-MRI. The subjects were seven patients with liver disease (mean age, 66.7±8.2 years). The axial slices of two LAVA sequences were used for the comparison of the uniformity of fat-suppression and image quality at a regionof-interest (ROI) of the liver dome, the porta, and the renal hilum. To yield a quantitative measurement of the uniformity of fat suppression, the percentage standard deviation (%SD) was calculated by comparing two sequences. For image signal to noise ratio (SNR), the contrast between the liver and fat (Cliver-fat), and the liver and muscle (Cliver-muscle), the other ROIs were placed in the superficial fat, liver, spleen, pancreas, and muscle. The%SD in Turbo-LAVA (28.1±16.8%) was lower than that in LAVA (41.5±13.4% ). While, the Cliver-fat in the Turbo-LAVA (0.72±0.06) was significantly higher than that in LAVA (0.59±0.07). Turbo-LAVA sequence offers superior and more homogenous fat-suppression in comparison to LAVA sequence.

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Single-breath-hold thin-slice gadoxetic acid-enhanced hepatobiliary MR imaging using a newly developed three-dimensional fast spoiled gradient-echo sequence

Cited by 3 publications

References 17 publications

Transient Respiratory-motion Artifact and Scan Timing during the Arterial Phase of Gadoxetate Disodium-enhanced MR Imaging: The Benefit of Shortened Acquisition and Multiple Arterial Phase Acquisition

Transient Respiratory-motion Artifact and Scan Timing during the Arterial Phase of Gadoxetate Disodium-enhanced MR Imaging: The Benefit of Shortened Acquisition and Multiple Arterial Phase Acquisition

Impact of adaptive image receive coil technology for liver MR imaging at 3.0 Tesla: Intraindividual comparison with use of conventional coil

Evaluation of Image Quality in Three-dimensional Fat-suppressed T<sub>1</sub>-weighted Images with Fast Acquisition Mode for Upper Abdomen

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