10/16/2026
"Every year, hundreds of thousands of children around the world undergo magnetic resonance imaging, and a large fraction of them cannot simply lie still long enough for the scanner to do its work. For infants, toddlers, and many school-aged children, the solution is sedation or anesthesia, most commonly with the intravenous drug propofol. A new retrospective study from Massachusetts General Hospital, published in Pediatric Radiology, has now quantified something that radiologists and anesthesiologists have long suspected but rarely measured with precision: the operational choices made when designing an MRI protocol directly determine how long a child stays under, and therefore how much anesthetic drug that child receives."
Continue to read this article on "Faster MRI Scans Could Slash Anesthetic Doses in Children, Study Finds."
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A study of 2,149 pediatric MRI exams shows that multi-region protocols and contrast imaging lengthen scan time and that every extra ten minutes under the scanner adds 0.71 mg/kg of propofol exposure,