Conventional echo-planar imaging (EPI) DWI suffers from substantial artifact when imaging orthopedic hardware. DWI with multi-acquisition with variable resonance image combination (MAVRIC) can reduce susceptibility artifact around metal implants. The purpose of this work was to evaluate the quantitative accuracy of DWI-MAVRIC near metal components using a diffusion phantom. DWI-MAVRIC sequences were acquired in the presence of no metal, cobalt-chromium, titanium, and stainless steel. It was found that DWI-MAVRIC can accurately measure apparent diffusion coefficient (ADC) in the presence of metal. Among tested metals, stainless steel creates the greatest artifact that prevented the acquisition of accurate ADC data.
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