Japanese Journal of Radiology

, Volume 36, Issue 5, pp 331–339 | Cite as

Comparison of detectability of breast cancer by abbreviated breast MRI based on diffusion-weighted images and postcontrast MRI

  • Takayuki Yamada
  • Yoshihide Kanemaki
  • Satoko Okamoto
  • Yasuo Nakajima
Original Article



To compare the detectability of unenhanced abbreviated magnetic resonance imaging (MRI) based on diffusion-weighted imaging (DWI) and abbreviated postcontrast MRI for breast cancer.


The study population consisted of 87 patients undergoing breast MRI between December 2016 and March 2017 in a clinical setting. All breast MRIs were performed using a 1.5-T MRI scanner with a 16-channel breast radiofrequency coil. The abbreviated protocols based on DWI (AP1) and postcontrast MRI (AP2) were assessed independently by two radiologists. Sensitivity and specificity were calculated. Receiver operating characteristic analysis was performed and the areas under the curves (AUCs) were compared between AP1 and AP2.


The study included 87 patients with 89 breast cancer lesions ≤ 2 cm in diameter. The sensitivity/specificity for AP1 and AP2 for reader 1 was 89.9/97.6% and 95.5/90.6%, respectively, and those for reader 2 was 95.5/94.1% and 98.9/94.1%, respectively. The AUCs for AP1 and AP2 for reader 1 were 0.9629 and 0.9640 (p = 0.95), respectively, and those for reader 2 were 0.9755 and 0.9843 (p = 0.46), respectively.


The detectability of the unenhanced abbreviated protocol based on DWI would be comparable to that of abbreviated postcontrast MRI for breast cancer.


Breast neoplasms Magnetic resonance imaging Diffusion-weighted image Protocol Detection 



We would like to thank Mr. Seiji Umano, the radiology technician who assisted with preparation of the image sets in the picture archiving and communication system server.

Compliance with ethical standards

Conflict of interest

Takayuki Yamada: There is no conflict of interest to disclose with respect to the study. Yoshihide Kanemaki: There is no conflict of interest to disclose with respect to the study. Satoko Okamoto: There is no conflict of interest to disclose with respect to the study. Yasuo Nakajima: There is no conflict of interest to disclose with respect to the study.

IRB statement

This study was approved by our institutional review board.


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Copyright information

© Japan Radiological Society 2018

Authors and Affiliations

  • Takayuki Yamada
    • 1
  • Yoshihide Kanemaki
    • 2
  • Satoko Okamoto
    • 2
  • Yasuo Nakajima
    • 3
  1. 1.Department of RadiologySt. Marianna University School of Medicine, Yokohama City Seibu HospitalYokohamaJapan
  2. 2.Department of Radiology, Breast and Imaging CenterSt. Marianna University School of MedicineKawasakiJapan
  3. 3.Department of RadiologySt. Marianna University School of MedicineKawasakiJapan

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