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Abstract #3935

Improved visualization of optic nerve DWI using IRIS: comparison with conventional methods

Yutaka Hamatani1, Kayoko Abe2, Masami Yoneyama3, Jaladhar Neelavalli4, Yasuhiro Goto1, Isao Shiina1, Kazuo Kodaira1, Takumi Ogawa1, Mamoru Takeyama1, Isao Tanaka1, and Shuji Sakai2
1Department of Radioligical Services, Tokyo Women's Medical University Hospital, Tokyo, Japan, 2Department of Diagnostic imaging & Nuclear Medicine, Tokyo Women's Medical University Hospital, Tokyo, Japan, 3Philips Japan, Tokyo, Japan, 4Philips Healthcare, Bangalore, India

IRIS (Image Reconstruction using Image-space Sampling Function) is a DWI sequence for Multi shot (Mhs) echo planar imaging (EPI) with phase correction. The purpose of this study is to investigate the usefulness of IRIS for optic nerve, in which SSh EPI-DWI tends to show poor image quality due to magnetic susceptibility artifacts. As a result of comparing image quality among Single shot (SSh) EPI-DWI, SSh turbo spin echo (TSE)-DWI, MSh TSE-DWI, and IRIS, IRIS was the best sequence to visualize the optic nerve. IRIS suppressed magnetic susceptibility artifacts most clearly, and can provide excellent contrast with high robustness.

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