Related Experiment Video
Updated: Feb 16, 2026

Making MR Imaging Child's Play - Pediatric Neuroimaging Protocol, Guidelines and Procedure
Published on: July 30, 2009
Melatonin as an alternative sedation method during magnetic resonance imaging in preschool children with
Agneza Marija Pasini1, Josip Marjanović2, Goran Roić1
1Children's Hospital Zagreb, School of Medicine, University of Zagreb, Zagreb, Croatia.
Insights
Oral melatonin offers a safe and effective alternative to sedation for preschool children undergoing magnetic resonance imaging (MRI). This method successfully reduces motion artifacts, improving diagnostic quality for musculoskeletal conditions.
Area of Science:
- Pediatric Radiology
- Pharmacology
Background:
- Magnetic resonance imaging (MRI) is crucial for diagnosing juvenile idiopathic arthritis (JIA) but is challenged by motion artifacts in preschool children.
- Standard sedation or general anesthesia (GA) for pediatric MRI carries risks and requires specialized staff.
Purpose of the Study:
- To evaluate oral melatonin as a safe and effective alternative to sedation for preschool children undergoing musculoskeletal MRI.
- To assess the efficacy of melatonin in preventing motion artifacts in pediatric MRI examinations.
Main Methods:
- Fifteen preschool children with suspected JIA underwent 16 MRI examinations after receiving 10 mg of oral melatonin.
- No sleep deprivation was employed prior to melatonin administration.
Main Results:
- Satisfactory MRI images were obtained in 15 out of 16 examinations (93.75%).
- No adverse events were reported during or after melatonin administration.
Conclusions:
- Oral melatonin is an effective, safe, and inexpensive alternative to sedation and GA for musculoskeletal MRI in preschool children.
- Melatonin successfully prevents motion artifacts, enhancing diagnostic image quality without increased risks.
Abstract:
Magnetic resonance imaging (MRI) in preschool children is often challenging due to excessive motion artifacts. Sedation or general anesthesia (GA) is commonly used to prevent children from moving in the MRI scanner, with increased risk for cardiopulmonary complications and requirement for skilled personnel. Herein, we investigated whether oral melatonin, a natural hormone implicated in circadian rhythm regulation, could be used as an alternative sedation method prior to the MRI in preschool children with musculoskeletal problems. Fifteen children with suspected juvenile idiopathic arthritis underwent a total of 16 MRI examinations following administration of 10 mg of oral melatonin; satisfactory images were obtained in all but one case, with no adverse events.
Conclusion:
The use of melatonin before the musculoskeletal MRI in preschool children is an effective, safe, and inexpensive alternative to standard sedation and general anesthesia in preventing motion artifacts. What is Known: • Magnetic resonance imaging (MRI) is a well-recognized diagnostic method to visualize synovial inflammation and changes of cartilage and bone in juvenile idiopathic arthritis. • MRI examination requires sedation or general anesthesia to ensure immobility in children who are uncooperative. What is New: • Melatonin without sleep deprivation is efficacious and safe alternative to conventional sedation and general anesthesia before the musculoskeletal contrast-enhanced MRI in preschool children with JIA with timely insertion of intravenous cannula.
Related Concept Videos
Magnetic Resonance Imaging
Imaging Studies for Cardiovascular System IV: CMRI
Imaging Studies I: CT and MRI
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...
Sedatives and Hypnotics Drugs: Miscellaneous Agents
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
Skeletal Muscle Relaxants: Therapeutic Uses
Management of Insomnia

