46 Preparation for MRI through imaginary visualization of an astronaut’s rocket journey to space for children 3 to 7 years old
Bibliographic record
Abstract
Abstract Background Medical imaging by magnetic resonance imaging (MRI) is now frequently used in the pediatric population. Up to now, sedation is used almost systematically to provide adequate immobilization during the exam. However, sedation is not without risks. Objectives The objective of this study is to evaluate whether a prior familiarization to MRI procedures with a video staging the imaginary world of an astronaut’s rocket journey into space will decrease the number of required sedations for an MRI for children aged 3 to 7 years old. Design/Methods A total of 136 children between 3 and 8 years of age, referred for an MRI between April 2016 and October 2019, were recruited for this prospective non-randomized quasi-experimental study. The control group (April 2016 to August 2017, n=73) received the usual sedation protocol for MRI used in our center. A pictorial step-by-step brochure and a three-minute video explaining the parallel between the MRI reality and the imaginary world of an astronaut was developed and shown to the intervention group (July 2018 to October 2019, n=63) before the MRI. Compared to the control group, any MRI in the intervention group was first attempted without sedation. Results A significant decrease in the number of sedations was observed in the intervention group (n=18; 28.6%) compared to the control group (n=47; 64.4%) (odds ratio: 0.22; p <0.001). The effect of the intervention was even stronger for younger children (3 and 4 years old) (odds ratio: 0.03) compared to older children (5 years old and above) (odds ratio: 0.3). After logistic regression, age remained the sole other significant factor to influence the need for sedation, even in the intervention group. Conclusion A video and a brochure staging the imaginary world of an astronaut’s rocket journey into space showed just before a MRI significantly reduces the rate of sedation in children aged 3 to 7 years, especially for young children. We believe the implementation of interventions using imaginary visualization in this age group should be widely used to limit the necessity of sedation.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.006 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".