Non-contrast Diffusion-weighted MRI for Detection of Synovitis using DESS
Emily J McWalter 1 , Bragi Sveinsson 1 , Edwin H Oei 1,2 , William H Robinson 1 , Mark C Genovese 1 , Garry E Gold 1 , and Brian A Hargreaves 1
Stanford University, Stanford, CA, United
Synovitis is frequently observed osteoarthritis and is
characterized by synovial thickening and joint effusion.
Contrast enhanced T1-weighted imaging is the current
gold standard for detecting synovitis; however,
introducing contrast enhanced images at the end of a
knee protocol increases time, cost and risk to patients.
We propose double echo in the steady state (DESS)
imaging for synovitis detection without the need for
administration of an intravenous contrast agent and
demonstrate that with a linear combination of the DESS
echoes, improved contrast between the synovial membrane
and fluid can be achieved.
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