Mock MRI: reducing the need for anaesthesia in children

Pediatr Radiol. 2010 Aug;40(8):1368-74. doi: 10.1007/s00247-010-1554-5. Epub 2010 Feb 26.


Background: With a longer waiting list for paediatric MRI performed under general anaesthesia (GA) and considering safety concerns, the Royal Children's Hospital Brisbane established a mock MRI service. The aim of this service is to reduce the requirement for MRI under GA.

Objective: The objective of this study was to test the hypothesis that the percentage of children ages 3 years to 14 years in the study period that required general anaesthesia would be less with mock MRI when compared to standard practise.

Materials and methods: A retrospective audit of clinical data was conducted to examine the impact of mock MRI on the GA rate for clinical MRI.

Results: Results indicated the addition of a mock MRI reduced the need for GA most significantly for children ages 3 to 8 years. In this age group, the rate of GA was 16.8% lower than that of the non-mock MRI group (P = <0.05).

Conclusion: Mock MRI reduces the need for GA in children with the greatest effect evident in children aged between 3 and 8 years.

MeSH terms

  • Adolescent
  • Anesthesia*
  • Child
  • Child, Preschool
  • Fear
  • Humans
  • Magnetic Resonance Imaging / statistics & numerical data*
  • Pediatrics*
  • Retrospective Studies