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Earlier and better high-resolution single breast imaging during bilateral breast dynamic scans at 3-T MRI: comparison with post dynamic high-resolution imaging

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Abstract

Background

Breast MRI protocols have been improved by using a combination of dynamic scans for bilateral breasts and high-resolution imaging for a single breast which can be obtained during dynamic scans by recent technological advances. The purpose of this study was to compare high-resolution imaging during dynamic scans (HR-intra) with high-resolution imaging obtained post dynamic scans (HR-post).

Methods

Fifty-five women with pathologically proven breast cancer who underwent breast dynamic scans at 3-T MRI from February to September 2009 were enrolled in this study. Tumoral contrasts to the background breast tissue were compared by three radiologists independently in a blinded fashion. Results of visual assessment were categorized into three groups as follows: HR-intra being better (IB), equal (E), and HR-post being better (PB). The contrast to noise ratio (CNR) of the tumor and the signal to noise ratio of the normal breast gland (SNR) were compared between HR-intra and HR-post.

Results

Two patients were excluded because of poor MR imaging quality. Three radiologists separately categorized 64.2, 79.2, and 77.4 % of lesions as IB. The CNR of the tumor of HR-intra (mean ± SD = 6.9 ± 4.0) was significantly higher than that of HR-post (6.0 ± 3.7, p < 0.0001). The SNR of the normal breast gland of HR-intra (9.5 ± 1.7) was significantly lower than that of HR-post (10.0 ± 1.9, p < 0.0001).

Conclusion

HR-intra during dynamic MRI provided earlier and better tumor to normal breast gland contrast than HR-post.

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Conflict of interest

All authors have no conflict of interest to disclose.

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Authors and Affiliations

  1. Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, N14, W5, Kita-ku, Sapporo, 060-8648, Japan

    Fumi Kato, Noriko Oyama-Manabe, Yusuke Sakuhara & Satoshi Terae

  2. Department of Radiology, Hokkaido University Hospital, N14, W5, Kita-ku, Sapporo, 060-8648, Japan

    Suzuko Mito

  3. First Department of Surgery, Hokkaido University Hospital, N14, W5, Kita-ku, Sapporo, 060-8648, Japan

    Masato Takahashi & Mitsuchika Hosoda

  4. Philips Electronics Japan, Ltd., 13-37 Kohnan 2, Minato-ku, Tokyo, 108-8507, Japan

    Tetsuro Sakamoto

  5. Department of Radiation Oncology, Hokkaido University Hospital, N14, W5, Kita-ku, Sapporo, 060-8648, Japan

    Hiroki Shirato

Authors
  1. Fumi Kato
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  2. Noriko Oyama-Manabe
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  3. Yusuke Sakuhara
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  4. Suzuko Mito
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  5. Masato Takahashi
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  6. Tetsuro Sakamoto
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  7. Mitsuchika Hosoda
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  8. Satoshi Terae
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  9. Hiroki Shirato
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Corresponding author

Correspondence to Noriko Oyama-Manabe.

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Kato, F., Oyama-Manabe, N., Sakuhara, Y. et al. Earlier and better high-resolution single breast imaging during bilateral breast dynamic scans at 3-T MRI: comparison with post dynamic high-resolution imaging. Breast Cancer 22, 475–479 (2015). https://doi.org/10.1007/s12282-013-0505-z

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  • DOI: https://doi.org/10.1007/s12282-013-0505-z

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