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Abstract #0243

Single-shot Diffusion-weighted Spiral Imaging in the Brain on a Clinical Scanner

Peter Börnert1,2, Holger Eggers1, Kay Nehrke1, Peter Koken1, Jan Groen3, Suthambhara Nagaraj3, Johan van den Brink3, and Silke Hey3

1Tomographic Imaging Systems, Philips Research, Hamburg, Germany, 2Radiology, LUMC, Leiden, Netherlands, 3MRI, Philips Healthcare, Best, Netherlands

Single-shot diffusion-weighted imaging is predominantly performed with echo planar imaging today. Spiral imaging allows shorter echo times and thus promises higher signal-to-noise ratio, but is sensitive to various system imperfections. While previous work resorted to using a field camera for this reason, this work demonstrates the feasibility of single-shot diffusion-weighted spiral imaging in the brain on a clinical scanner without extra hardware for field monitoring. Good image quality was generally achieved in volunteers for different diffusion gradient directions up to high b-values using the demand trajectory for gridding, parallel imaging for acceleration, and static main field inhomogeneity mapping for deblurring.

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