Observational studyCritical care explorations2026
Ultrasound Assessment of the Third Ventricle Diameter: Agreement With CT Results in the Pediatric Population.
Observational study in Critical care explorations, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
8 authors.
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Abstract
objectivesTo evaluate the agreement between transcranial ultrasound (TUS) and CT measurements of third ventricle diameter in critically ill children.
designProspective observational cohort study.
settingPICU of the Children's Hospital of Rabat, Morocco. PATIENTS: Children 1 month to 15 years old admitted with acute neurologic distress who underwent brain CT.
interventionsTUS was performed within 1 hour of CT using a phased-array probe through bilateral transtemporal windows. MEASUREMENTS AND MAIN
resultsOf 150 screened patients, 148 were included (median age 5 yr; 68% male). Feasibility was high, with bilateral acoustic windows obtained in 98.6% of cases. The median third ventricle diameter was 3.6 mm by both CT and TUS. Bland-Altman analysis demonstrated good agreement between TUS and CT: mean bias 0.11 mm (limits of agreement, -0.78 to 1.01 mm) on the right side and 0.16 mm (-0.81 to 1.13 mm) on the left. Agreement was highest for smaller third ventricle diameters, which accounted for most measurements. No patients had a midline shift or had undergone decompressive craniectomy at the time of imaging.
conclusionsTUS provides reproducible bedside measurements of third ventricle diameter in children, with good agreement compared with CT in patients without midline shift or major surgical alterations. While not a substitute for comprehensive neuroimaging, TUS may serve as a nonirradiating adjunct for serial ventricular monitoring, particularly for monitoring for the development of hydrocephalus and during external ventricular drain management. Further research should evaluate interoperator reproducibility, applicability in patients with mass effect, and integration into clinical workflows.
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