Figure 3 - available via license: Creative Commons Attribution 4.0 International
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Metal artifact from 50mT to 7T. Here we show Figure 7 from Van Speybroek, et al., 2021 [36] where the "worst-case" scenario images for four types of metal implants are demonstrated. (Images reused via open access license.)
Source publication
In magnetic resonance imaging (MRI), inhomogeneity in the main magnetic field used for imaging, referred to as off-resonance, can lead to image artifacts ranging from mild to severe depending on the application. Off-resonance artifacts, such as signal loss, geometric distortions, and blurring, can compromise the clinical and scientific utility of M...
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Context 1
... with all susceptibility-induced B 0 changes, these effects scale with field strength. Notably, lower magnetic fields result in smaller distortions and lower field strength clinical scanners are often preferred when scanning structures proximal to metal implants, as seen in Fig. 3. Further, the lower resonant frequency at lower field reduces the safety and imaging impact of RF (B 1 ) inhomogeneity around metal ...
