Mami Iima1,2, Aika Okazawa3, Ryosuke Okumura3, Sachiko Takahara4, Tomotaka Noda3, Taro Nishi3, Yuji Nakamoto1, and Masako Kataoka1
1Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan, 2Clinical Innovative Medicine, Institute for Advancement of Clinical and Translational Science, Kyoto University Hospital, Kyoto, Japan, 3Radiology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Osaka, Japan, 4Breast Surgery, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Osaka, Japan
1Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan, 2Clinical Innovative Medicine, Institute for Advancement of Clinical and Translational Science, Kyoto University Hospital, Kyoto, Japan, 3Radiology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Osaka, Japan, 4Breast Surgery, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Osaka, Japan
Our
proposed DWI reading method based on BI-RADS lexicons from multiple b-value
images had comparable specificity and NPV to standard BI-RADS. DWI reading
method might increase diagnostic confidence in differentiating malignancy from benignity.
Figure 2:
the representative case of the typical malignant tumor (left). The tumor shows moderate signal intensity at low b-value, an increased signal at high b-value, and decreased ADC, suggesting malignancy. Invasive ductal carcinoma.
the representative case of the typical benign tumor (right). The tumor shows marked signal intensity at low b-value, decreased signal at high b-value, and slightly low ADC, suggesting a benign breast tumor. Fibroadenoma.
Table 2: Diagnostic performance for DWI and DCE-MRI