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Erschienen in: European Radiology 6/2019

19.11.2018 | Magnetic Resonance

Risk assessment of copper-containing contraceptives: the impact for women with implanted intrauterine devices during clinical MRI and CT examinations

verfasst von: Wiebke Neumann, Tanja Uhrig, Matthias Malzacher, Verena Kossmann, Lothar R. Schad, Frank G. Zoellner

Erschienen in: European Radiology | Ausgabe 6/2019

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Abstract

Objectives

To assess the risks for implant users with copper-containing intrauterine devices (IUDs) during MR and CT examinations.

Methods

A tissue-mimicking phantom suitable for all experiments within this study was developed. Seven different types of copper IUDs were evaluated. Heating and dislocation of each IUD were investigated at two clinically relevant positions in 1.5 T and 3 T MR scanners. Artifacts in the field of view caused by each tested IUD were determined for clinical MR and CT imaging.

Results

No significant heating of any tested IUD was detected during MR measurements. The temperature increase was less than 0.6 K for all IUDs. Neither angular deflection nor translation of any IUD was detected. Artifacts in MR images were limited to the very vicinity of the IUDs except for one IUD containing a steel-visualizing element. Streaking artifacts in CT were severe (up to 75.5%) in the slices including the IUD.

Conclusion

No significant risk possibly harming the patient was determined during this phantom study, deeming MR examinations safe for women with an implanted copper IUD. Image quality was more impaired for CT than for MR imaging and needs careful consideration during diagnosis.

Key Points

• Risk assessment of copper-containing IUDs with regard to heating, dislocation, and artifacts during MR and CT imaging.
• Neither significant heating nor dislocation was determined in MR; image quality was more impaired for CT than for MR imaging and needs careful consideration during diagnosis.
• The tested IUDs pose no additional risks for implant users during MR and CT examinations.
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Metadaten
Titel
Risk assessment of copper-containing contraceptives: the impact for women with implanted intrauterine devices during clinical MRI and CT examinations
verfasst von
Wiebke Neumann
Tanja Uhrig
Matthias Malzacher
Verena Kossmann
Lothar R. Schad
Frank G. Zoellner
Publikationsdatum
19.11.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
European Radiology / Ausgabe 6/2019
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-018-5864-6

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