Keywords: Low-Field MRI, Susceptibility, Routine Protocols
Motivation: To investigate the performance of modernized low-field MRI relative to traditional systems for imaging near metallic devices within the clinical context.
Goal(s): To evaluate whether low-field MRI can offer a significant reduction in artifacts when using routine clinical protocols.
Approach: The artifact characteristics of 0.5 T, 1.5 T, and 3 T MRIs are compared in this ASTM F2119-07-based phantom study of common passive metallic devices.
Results: Low-field MRI demonstrated the capability to reduce susceptibility artifacts when imaging near metal-containing medical devices. However, artifact produced by some pulse sequences diverged from the anticipated field-dependence, highlighting the sizable effects of clinical protocolling.
Impact: This phantom study demonstrates that low-field MRI can image metallic devices with reduced artifact relative to 1.5/3 T systems using routine clinical protocols, highlighting opportunities for future in vivo studies involving implants and imaging in areas with magnetic susceptibility distortions.
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