Table 1.

Search terms

Databases	Search terms
PubMed	Search (((((“Anesthesia, Inhalation”[Mesh] OR “Anesthesia, General”[Mesh]
CINAHL	OR “Anesthesia, Intravenous”[Mesh] OR “Anesthesia and Analgesia”[Mesh])
	OR “Anesthesia”[Mesh]) OR (“Deep Sedation”[Mesh] OR “Conscious
Cochrane Library	Sedation”[Mesh] OR “Anti-Anxiety Agents”[Mesh]) OR sedat* OR anesthes*))
	AND
	((“Infant, Extremely Premature”[Mesh] OR “Infant, Extremely Low Birth Weight”[Mesh] OR “Infant, Very Low Birth Weight”[Mesh] OR “Infant Behavior”[Mesh] OR “Infant, Small for Gestational Age”[Mesh] OR “Infant, Premature, Diseases”[Mesh] OR “Infant, Premature”[Mesh] OR “Infant, Postmature”[Mesh] OR “Infant, Newborn”[Mesh] OR “Infant, Low Birth Weight”[Mesh] OR “Term Birth”[Mesh] OR “Intensive Care, Neonatal”[Mesh] OR “Infant”[Mesh]) OR “Premature Birth”[Mesh] OR infant OR premature OR preemie OR neonat* OR NICU OR baby OR child OR toddler))
	AND
	(“Magnetic Resonance Imaging”[Mesh] OR “Magnetic Resonance Imaging, Interventional”[Mesh] OR “Diffusion Magnetic Resonance Imaging”[Mesh] OR “Magnetic Resonance Angiography”[Mesh] OR “Magnetic Resonance Imaging, Cine”[Mesh] OR MRI OR “magnetic resonance”)
	AND
	(image OR quality)
	------------------------------------
	Filters: Humans; English; Child: birth-18 years; Infant: birth-23 months