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01-08-2016 | Magnetic Resonance

Reduction in respiratory motion artefacts on gadoxetate-enhanced MRI after training technicians to apply a simple and more patient-adapted breathing command

Authors: Andreas Gutzeit, Simon Matoori, Johannes M. Froehlich, Constantin von Weymarn, Carolin Reischauer, Orpheus Kolokythas, Matthias Goyen, Klaus Hergan, Matthias Meissnitzer, Rosemarie Forstner, Jan D. Soyka, Aleksis Doert, Dow-Mu Koh

Published in: European Radiology | Issue 8/2016

Abstract

Objective

To investigate whether a trained group of technicians using a modified breathing command during gadoxetate-enhanced liver MRI reduces respiratory motion artefacts compared to non-trained technicians using a traditional breathing command.

Materials and methods

The gadoxetate-enhanced liver MR images of 30 patients acquired using the traditional breathing command and the subsequent 30 patients after training the technicians to use a modified breathing command were analyzed. A subgroup of patients (n = 8) underwent scans both by trained and untrained technicians. Images obtained using the traditional and modified breathing command were compared for the presence of breathing artefacts [respiratory artefact-based image quality scores from 1 (best) to 5 (non-diagnostic)].

Results

There was a highly significant improvement in the arterial phase image quality scores in patients using the modified breathing command compared to the traditional one (P < 0.001). The percentage of patients with severe and extensive breathing artefacts in the arterial phase decreased from 33.3 % to 6.7 % after introducing the modified breathing command (P = 0.021). In the subgroup that underwent MRI using both breathing commands, arterial phase image quality improved significantly (P = 0.008) using the modified breathing command.

Conclusion

Training technicians to use a modified breathing command significantly improved arterial phase image quality of gadoxetate-enhanced liver MRI.

Key Points

• A modified breathing command reduced respiratory artefacts on arterial-phase gadoxetate-enhanced MRI (P < 0.001).

• The modified command decreased severe and extensive arterial-phase breathing artefacts (P = 0.021).

• Training technicians to use a modified breathing command improved arterial-phase images.

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Title: Reduction in respiratory motion artefacts on gadoxetate-enhanced MRI after training technicians to apply a simple and more patient-adapted breathing command
Authors: Andreas Gutzeit
Simon Matoori
Johannes M. Froehlich
Constantin von Weymarn
Carolin Reischauer
Orpheus Kolokythas
Matthias Goyen
Klaus Hergan
Matthias Meissnitzer
Rosemarie Forstner
Jan D. Soyka
Aleksis Doert
Dow-Mu Koh
Publication date: 01-08-2016
Publisher: Springer Berlin Heidelberg
Published in: European Radiology / Issue 8/2016
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-015-4086-4

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Reduction in respiratory motion artefacts on gadoxetate-enhanced MRI after training technicians to apply a simple and more patient-adapted breathing command

Abstract

Objective

Materials and methods

Results

Conclusion

Key Points

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Objective

Materials and methods

Results

Conclusion

Key Points

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