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Abstract #2120

MR Endoscopy vs EUS: A Comparison

Richard Syms 1 , Chris Wadsworth 2 , Ian Young 1 , Marc Rea 2 , and Simon Taylor-Robinson 2

1 EEE Dept., Imperial College London, London, Middlesex, United Kingdom, 2 St Mary's Hospital, Imperial College London, London, Middlesex, United Kingdom

Endoscopic ultrasound (EUS) is a well-established, safe modality for real-time imaging of the duodenum and nearby ductal systems. However, all echo-ranging imaging suffers from artifacts, the most significant being reverberation between impedance discontinuities. As a result, concentric artifacts dominate the near field. These artifacts cannot be suppressed without eliminating the fundamental contrast mechanism, unless a nonlinear contrast agent is used. As a result, EUS images are hard to interpret, and repeated scans are required. Although slower, internal MRI may therefore offer advantages. The aim of this paper is to compare the performance of a new MR-imaging duodenoscope with EUS.

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