Abstract #2263

Improved 2D navigated multishot DTI of the optic nerve with triggered eye fixation.

Saikat Sengupta^1,2, Alex Smith^2,3, Samantha By^2,3, Ha-Kyu Jeong⁴, and Seth Smith^1,2

¹Department of Radiology, Vanderbilt University Medical Center, Nashville, TN, United States, ²Vanderbilt University Institute of Imaging Science, ³Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, United States, ⁴Philips Electronics, Korea, Republic of

Optic Nerve DTI is of high interest in pathologies of the anterior visual pathway but high quality high-resolution diffusion MRI in the optic nerve is challenging because of involuntary eye motion. Vulnerability to motion induced phase errors is increased when multishot EPI (mshEPI) is used for achieving high imaging resolutions. In this abstract we present a triggered diffusion MRI approach with eye fixation that can significantly improve quality of optic nerve DTI, especially with mshEPI.

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