Neuro / Head & NeckBody / AbdominalResearchTrainee

Repeat MRI for Motion: 4.8% of Exams, Brain Images Improve but MRCP Does Not

Journal of the American College of Radiology : JACRyesterday

In 85,349 MRI exams, 4.8% had motion-related repeat sequences. Brain MRI repeats improved image quality and diagnostic confidence (p<0.001), but 19.5% didn’t help; MRCP repeats showed no significant improvement.

  • Pediatric patients had the highest repeat frequency at 9.9%, while breast MRI had the lowest at 3.5%.
  • In brain MRI, improvement from repeat acquisition declined with longer elapsed examination time.
  • For MRCP, both readers would have requested another repeat in half of the repeated acquisitions.
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