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Abstract #2949

3D Multi-shot Steady-State Free Precession EPI: a Feasibility Study for Bright Fluid Cartilage Imaging

Wei Liu1, Jin Jin2, Guido Buonincontri1, Marcel Dominik Nickel1, Simon Balzer1, and Labeeb Kozhikkavil1
1Siemens Healthineers AG, Erlangen, Germany, 2Siemens Healthineers Pty Ltd, Brisbane, Australia

Synopsis

Keywords: Cartilage, Cartilage, Pulse Sequence Design

Motivation: High-contrast imaging of articular cartilage with synovial fluid visibility is crucial for accurate joint assessment. Conventional SSFP sequences are inefficient and have limited flip angle flexibility in high-field MRI, motivating the exploration of alternative imaging sequences.

Goal(s): This study aims to evaluate the feasibility of 3D multi-shot EPI-SSFP sequences for achieving high-contrast, efficient cartilage imaging compared to conventional DESS sequence.

Approach: A modified 3D multi-shot EPI sequence with FISP and TrueFISP adaptations was implemented and tested on a healthy volunteer.

Results: EPI-FISP and EPI-TrueFISP demonstrated comparable or better fluid-cartilage contrast than DESS, while EPI-TrueFISP exhibited banding artifacts at 3T.

Impact: The proposed EPI-SSFP sequences offer improved efficiency and high-contrast imaging for cartilage assessment, potentially enhancing clinical assessment of joint effusions with reduced scan time and flexibility in imaging parameters.

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Keywords