Interobserver reliability between pediatric radiologists and residents in ultrasound evaluation of intraventricular hemorrhage in premature infants

Figure 1 Grade I germinal matrix hemorrhage. Parasagittal and cornal views of the right lateral ventricle, in which abnormal echogenicity in caudothalamic groove was consistent with grade I intraventricular hemorrhage/germinal matrix hemorrhage as indicated by arrows.

Figure 2 Grade II intraventricular hemorrhage. Coronal view ultrasound image reveals abnormal echogenicity in the left caudothalamic groove extending into left lateral ventricle. There was no associated ventricular dilatation (white arrow).

Figure 3 Grade III intraventricular hemorrhage. Coronal view ultrasound image reveals right-sided intraventricular hemorrhage with associated ventricular dilatation (white arrow).

Figure 4 Grade IV bilateral intraventricular hemorrhage. Coronal view ultrasound image reveals bilateral intraventricular hemorrhage filling the dilated bilateral lateral ventricles, and extending into adjacent parenchyma (white arrows).