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Abstract #0369

Zoomed Diffusion-Weighted Echo-Planar Imaging for the Evaluation of Periampullary Carcinomas

Jingjing Liu1, Jingliang Cheng1, and Jinxia Zhu2
1Department of MR Imaging, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China, 2MR Collaboration, Siemens Healthcare Ltd, Beijing, China

We evaluated the efficacy of a zoomed diffusion-weighted echo-planar imaging (z-EPI) sequence to diagnose periampullary carcinoma compared with a conventional single-shot EPI (c-EPI) sequence. Better delineation of lesion conspicuities and margins were observed, as well as enhanced diagnostic confidence with z-EPI. The diagnostic accuracy increased by combining magnetic resonance cholangiopancreatography (MRCP) and z-EPI together. These findings showed remarkable image quality improvements for periampullary carcinomas using z-EPI. The ability to detect and delineate lesions using z-EPI was superior to that of c-EPI. Diagnostic accuracy was also attained, especially for small lesions.

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