Abstract #4444

Novel parameters of Ultrafast DCE MRI of the breast using a compressed sensing technique

Maya Honda¹, Masako Kataoka¹, Natsuko Onishi², Shotaro Kanao¹, Hajime Sagawa³, Mami Iima¹, Kanae Kawai Miyake¹, Dominik Nickel⁴, Masakazu Toi⁵, and Kaori Togashi¹

¹Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan, ²Department of Radiology, Memorial Sloan Kettering Cancer Center, New York City, NY, United States, ³Department of Radiology, Kyoto University Hospital, Kyoto, Japan, ⁴Siemens Healthcare GmbH, Erlangen, Germany, ⁵Department of Breast Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan

We evaluated new parameters of breast ultrafast dynamic contrast-enhanced (UF-DCE) MRI using compressed sensing technique: the maximum slope (MS), time to enhancement (TTE) and the time interval between arterial and venous visualization (AVI). MS was higher, and TTE and AVI were shorter in malignant lesions compared to benign lesions, although there were discrepancies among these parameters and BI-RADS based delayed phase patterns. There seemed to be some relevance between these parameters and histopathologic findings.

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