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Abstract #2265

Improved Fat Suppression in 3-D Double-Echo Steady-State Sequence with Water Excitation using an Adapted Dixon Technique

Yan Wen1, Maggie Fung1, Ek Tsoon Tan2, Gracyn Campbell2, Kang Wang1, and Darryl B. Sneag2
1GE HealthCare, Waukesha, WI, United States, 2Department of Radiology and Imaging, Hospital for Special Surgery, New York, NY, United States

Synopsis

Keywords: Neurography, MSK

Motivation: In 3-D double-echo steady-state sequence with water excitation, fat suppression may be incomplete due to system imperfections, such as B0 and B1 inhomogeneity.

Goal(s): This study describes implementing an adapted Dixon reconstruction to further suppress residual fat signal.

Approach: The images between default and proposed reconstructions were compared in 16 patients undergoing routine upper extremity MR neurography.

Results: The preliminary results demonstrated the feasibility of using the proposed reconstruction to remove residual fat signals incompletely suppressed by the water excitation.

Impact: A benefit of the further suppressed fat provided by the proposed reconstruction was the improved depiction of small, yet clinically important peripheral nerves (particularly subcutaneous sensory branches surrounded by fat).

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Keywords