Breast MRI at 7 Tesla with a bilateral coil and T1-weighted acquisition with robust fat suppression: Image evaluation and comparison with 3 Tesla

Ryan Brown, Pippa Storey, Christian Geppert, Kellyanne McGorty, Ana Paula Klautau Leite, James Babb, Daniel K. Sodickson, Graham C. Wiggins, Linda Moy

    Research output: Contribution to journalArticle

    Abstract

    Objectives: To evaluate the image quality of T1-weighted fat-suppressed breast MRI at 7 T and to compare 7-T and 3-T images. Methods: Seventeen subjects were imaged using a 7-T bilateral transmit-receive coil and 3D gradient echo sequence with adiabatic inversion-based fat suppression (FS). Images were graded on a five-point scale and quantitatively assessed through signal-to-noise ratio (SNR), fibroglandular/fat contrast and signal uniformity measurements. Results: Image scores at 7 and 3 T were similar on standard-resolution images (1.1 × 1.1 × 1.1-1.6 mm3), indicating that high-quality breast imaging with clinical parameters can be performed at 7 T. The 7-T SNR advantage was underscored on 0.6-mm isotropic images, where image quality was significantly greater than at 3 T (4.2 versus 3.1, P ≤ 0.0001). Fibroglandular/fat contrast was more than two times higher at 7 T than at 3 T, owing to effective adiabatic inversion-based FS and the inherent 7-T signal advantage. Signal uniformity was comparable at 7 and 3 T (P < 0.05). Similar 7-T image quality was observed in all subjects, indicating robustness against anatomical variation. Conclusion: The 7-T bilateral transmit-receive coil and adiabatic inversion-based FS technique produce image quality that is as good as or better than at 3 T.

    Original languageEnglish (US)
    Pages (from-to)2969-2978
    Number of pages10
    JournalEuropean Radiology
    Volume23
    Issue number11
    DOIs
    StatePublished - Nov 1 2013

    Keywords

    • Bilateral breast imaging
    • Breast cancer
    • Fat suppression
    • High-field MRI
    • RF coil array

    ASJC Scopus subject areas

    • Radiology Nuclear Medicine and imaging

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    Brown, R., Storey, P., Geppert, C., McGorty, K., Leite, A. P. K., Babb, J., Sodickson, D. K., Wiggins, G. C., & Moy, L. (2013). Breast MRI at 7 Tesla with a bilateral coil and T1-weighted acquisition with robust fat suppression: Image evaluation and comparison with 3 Tesla. European Radiology, 23(11), 2969-2978. https://doi.org/10.1007/s00330-013-2972-1