RF overflow artifact

RF overflow artefact cause a nonuniform, washed-out appearance to an image. This artifact occurs when the signal received by the scanner from the patient is too intense to be accurately digitized by the analog-to-digital converter. Autoprescanning usually adjusts the receiver gain to prevent this from occurring but if the artifact still occurs, the receiver gain can be decreased manually 1. Post-processing methods also exist but may be time consuming 2.

MRI physics
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Article information

rID: 22005
Section: Physics
Tags: refs, artefact
Synonyms or Alternate Spellings:
  • Rf overflow artefact

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Cases and figures

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    Figure 1: RF overflow artifact diagram
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    Case 1
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