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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