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Abstract #1866

Morphology of Breast lesions on Ultrafast Dynamic Contrast Enhanced MRI using Compressed Sensing Reconstruction

MASAKO KATAOKA1, Maya Honda2, Natsuko Onishi2, Mami Iima2, Akane Ohashi2, Ayami Ohno Kishimoto2, Rie Ota2, Marcel Dominik Nickel 3, Masakazu Toi4, and Kaori Togashi5

1Diagnostic Imaging and Nuclear Medicine, Kyoto University, Kyoto, Japan, 2Kyoto University Graduate School of Medicine, Kyoto, Japan, 3MR Application Predevelopment, Siemens Healthcare GmbH, Erlangen, Germany, 4Breast Surgery, Kyoto University, Kyoto, Japan, 5Diagnosti c Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, Kyoto, Japan

Using ultrafast DCE (UF-DCE) MRI with compressed sensing reconstruction, size and morphology of breast lesions on very early phase images within 1 minutes post contrast injection were compared to those on conventional DCE (C-DCE) MRI. The size of the lesions was slightly smaller on UF-DCE but within-2mm difference in approximately 80 % of the lesions. Morphological evaluations were the same in approximately 80% of the lesions yet irregular margin and clustered ring on C-DCE MRI may not be reflected to the appearance on UF-DCE, which should be noted in interpreting lesions using UF-DCE.

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