Abstract #3610

Motion robust and high resolution DWI utilizing the combination of Multi-shot Reduced FOV imaging with motion-compensated diffusion gradients

Zhigang Wu¹, Yajing Zhang², Guillaume Gilbert³, Wengu Su⁴, Yan Zhao⁵, and Jiazheng Wang⁶

¹Philips Healthcare, Shenzhen, Ltd., Shenzhen, China, ²Philips Health Technology, Suzhou, China, ³MR Clinical Science, Philips Healthcare, Mississauga, ON, Canada, ⁴BU MR Application, Philips Health Technology, Suzhou, China, ⁵BU MR R&D, Philips Health Technology, Suzhou, China, ⁶Philips Healthcare, Beijing, China

Synopsis

Keywords: Pulse Sequence Design, Diffusion/other diffusion imaging techniques, Diffusion, Motion compensated diffusion gradients, Reduced FOV imaging, Multi-shot DWIReduced FOV imaging (rFOV) and multi-shot DWI both are very useful techniques to improve spatial resolution for detection of pancreatic lesion. However, respiratory and cardiovascular motion will introduce severe artifacts and ADC bias. Motion compensated diffusion gradients (MOCO) could be used to improve the image quality. In this study, a new sequence named MOCO-rFOV IRIS was developed, which combines the advantages of rFOV, MOCO and image reconstruction using image-space sampling function based multi-shot DWI (IRIS). Results from in vivo data demonstrated that the proposed method could be used to realize motion robust and high resolution DWI for pancreas

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