Abstract #0555
Multi-Center Optimization of Breast DWI: Comparative Analysis of Fat Suppression Methods (STIR vs. SPAIR) and B-values (800 vs.1500 s/mm2)
Erika Inoue1, Mami Iima2,3, Yukiko Tokuda4, Masako Kataoka3, Ken Yamaguchi5, Akane Ohashi6,7, Takashi Ueguchi8, Hiroko Satake9, Kazushige Ichikawa10, Yutaka Kato10, Yoshihiro Koyama11, Yuto Kumano11, Sachiko Yamada11, Reika Sawaya11, Maya Honda12, Kazunori Kubota13, Kazunori Ohashi13, Tomoyuki Fujioka14, Takayoshi Ishimori1, Shinji Naganawa9, and Yuji Nakamoto3
1Department of Diagnostic Radiology, Medical Research Institute Kitano Hospital, Osaka, Japan, 2Department of Fundamental Development for Advanced Low Invasive Diagnostic Imaging, Nagoya University Graduate School of Medicine, Nagoya, Japan, 3Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan, 4Department of Radiology, Osaka University Graduate School of Medicine, Osaka, Japan, 5Department of Radiology, Saga University, Saga, Japan, 6Department of Radiology, Medical Research Institute Kitano Hospital, Osaka, Japan, 7Lund University, Lund, Sweden, 8Center for Information and Neural Networks, Advanced ICT Research Institute, National Institute of Information and Communications Technology, Osaka, Japan, 9Department of Radiology, Nagoya University Hospital, Nagoya, Japan, 10Department of Radiological Technology, Nagoya University Hospital, Nagoya, Japan, 11Department of Medical Technology, The University of Osaka Hospital, Osaka, Japan, 12Department of Radiology, Kansai Electric Power Hospital, Osaka, Japan, 13Dokkyo Medical University Saitama Medical Center, Saitama, Japan, 14Department of Artificial Intelligence Radiology, Institute of Science Tokyo, Tokyo, Japan
Synopsis
Keywords: Breast, Breast, diffusion
Motivation: As DWI is being incorporated into BI-RADS, it will become more necessary to examine the impact of DWI conditions on imaging and diagnosis.
Goal(s): To evaluate the effects of fat suppression techniques (STIR vs. SPAIR) and choice of b-values (800 and 1500s/mm²) on breast DWI.
Approach:
At four institutions, DW images with the two different fat suppression methods (STIR, SPAIR) were acquired at b-values of 800 and 1500s/mm2 from 291 women suspected of breast lesions and evaluated by six evaluators.
Results: Analysis of the four imaging combinations (SPAIR/STIR × b=800/1500s/mm²) showed no statistically significant differences, but SPAIR may better visualize small lesions.
Impact: STIR and SPAIR show comparable performance in breast DWI, but SPAIR may better visualize small lesions.
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