Abstract
Objective
The objective of our study was to evaluate the clinical application of bilateral high spatial and temporal resolution dynamic contrast-enhanced magnetic resonance imaging (HR DCE-MRI) of the breast at 7 T.
Methods
Following institutional review board approval 23 patients with a breast lesion (BIRADS 0, 4–5) were included in our prospective study. All patients underwent bilateral HR DCE-MRI of the breast at 7 T (spatial resolution of 0.7 mm3 voxel size, temporal resolution of 14 s). Two experienced readers (r1, r2) and one less experienced reader (r3) independently assessed lesions according to BI-RADS®. Image quality, lesion conspicuity and artefacts were graded from 1 to 5. Sensitivity, specificity and diagnostic accuracy were assessed using histopathology as the standard of reference.
Results
HR DCE-MRI at 7 T revealed 29 lesions in 23 patients (sensitivity 100 % (19/19); specificity of 90 % (9/10)) resulting in a diagnostic accuracy of 96.6 % (28/29) with an AUC of 0.95. Overall image quality was excellent in the majority of cases (27/29) and examinations were not hampered by artefacts. There was excellent inter-reader agreement for diagnosis and image quality parameters (κ = 0.89–1).
Conclusion
Bilateral HR DCE-MRI of the breast at 7 T is feasible with excellent image quality in clinical practice and allows accurate breast cancer diagnosis.
Key points
• Dynamic contrast-enhanced 7-T MRI is being developed in several centres.
• Bilateral high resolution DCE-MRI of the breast at 7 T is clinically applicable.
• 7-T HR DCE-MRI of the breast provides excellent image quality.
• 7-T HR DCE-MRI should detect breast cancer with high diagnostic accuracy.
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Funding was provided by the Austrian Nationalbank ‘Jubiläumsfond’ Project 5082.
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Pinker, K., Bogner, W., Baltzer, P. et al. Clinical application of bilateral high temporal and spatial resolution dynamic contrast-enhanced magnetic resonance imaging of the breast at 7 T. Eur Radiol 24, 913–920 (2014). https://doi.org/10.1007/s00330-013-3075-8
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DOI: https://doi.org/10.1007/s00330-013-3075-8