Metal artifact reduction algorithm

Dr Henry Knipe et al.

Metal artifact reduction (MAR) algorithms are used to improve CT image quality in patients with metalware, however, can be affected by novel artifacts 1-3. There are a number of commercially-available algorithms (in 2019) 1,3:

  • iterative MAR (iMAR) - Siemens
  • MAR for orthopedic implants (O-MAR) - Philips
  • single-energy MAR (SEMAR) - Toshiba/Canon
  • SmartMAR - GE

Practical points

  • images obtained with and without MAR should be reviewed together with multiplanar reformats to avoid misinterpreting newly created artifacts 3
Physics and imaging technology: CT
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Article information

rID: 67664
Section: Physics
Tag: cases
Synonyms or Alternate Spellings:
  • MAR algorithm
  • Metal artifact reduction (MAR) algorithm

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Cases and figures

  • Case 1: without MAR
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  • Case 1: with MAR
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