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Contrast-enhanced free-breathing 3D T1-weighted gradient-echo sequence for hepatobiliary MRI in patients with breath-holding difficulties

  • Magnetic Resonance
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Abstract

Objective

Evaluate the image quality and diagnostic performance of a free-breathing 3D-gradient-echo sequence with radial acquisition (rGRE) compared with a Cartesian breath-hold 3D-GRE (cGRE) sequence on hepatobiliary phase MRI in patients with breath-holding difficulties.

Methods

Twenty-eight consecutive patients (15 males; mean age 61 ± 11.9 years) were analysed in this retrospective IRB-approved study. Breath-holding difficulties during gadoxetate-disodium-enhanced liver MRI manifested as breathing artefacts during dynamic-phase imaging. MRI included axial and coronal cGRE and a radially sampled rGRE sequence during the hepatobiliary phase. Two radiologists independently evaluated cGRE and rGRE images for image quality, liver lesion detection and conspicuity, and bile duct conspicuity on a four-point scale.

Results

Liver edge sharpness was significantly higher on rGRE images (P < 0.001). Overall image quality was slightly but significantly higher for rGRE than for cGRE (P < 0.001 and P = 0.039). Bile duct conspicuity scores of rGRE and cGRE were not significantly different. Sensitivity for detection of the 26 liver lesions was similar for rGRE and cGRE (81-77 % and 73-77 %, P = 0.5 and 1.0). Lesion conspicuity scores were significantly higher for rGRE for one reader (P = 0.012).

Conclusion

In patients with breath-holding difficulties, overall image quality and liver lesion conspicuity on hepatobiliary phase MRI can be improved using the rGRE sequence.

Key Points

Patients with diminished breath-holding capacities present a major challenge in abdominal MRI.

A free-breathing sequence for hepatobiliary-phase MRI can improve image quality.

Further advances are needed to reduce acquisition time of the free-breathing gradient-echo sequence.

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Acknowledgements

B.M.D. is an employee of Siemens Healthcare.

E.M.M. receives research support from Siemens Healthcare and is a member of the speaker’s bureau and a consultant for Bayer AG and consultant for Repligen. No conflicts of interest relevant to this work are reported.

M.R.B. receives research support from Siemens Healthcare and Bracco Diagnostics.

Conflicts of interest

No conflicts of interest relevant to this work are reported.

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Correspondence to M. R. Bashir.

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Reiner, C.S., Neville, A.M., Nazeer, H.K. et al. Contrast-enhanced free-breathing 3D T1-weighted gradient-echo sequence for hepatobiliary MRI in patients with breath-holding difficulties. Eur Radiol 23, 3087–3093 (2013). https://doi.org/10.1007/s00330-013-2910-2

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  • DOI: https://doi.org/10.1007/s00330-013-2910-2

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