Guidelines for Interpreting an 18.9 mm Lateral Ventricular Measurement on Neonatal Cranial Ultrasound

Definition & Measurement Technique

Normal Reference Values & Intervention Thresholds

Ultrasound Appearance of an 18.9 mm Measurement

Clinical Significance & Severity Assessment

Associated Clinical Findings in Affected Infants

Additional Ultrasonographic Measurements to Consider

Measurement Reliability & Operator Considerations

Clinical Decision‑Making Guidance

Limitations of Cranial Ultrasound