Absence of skull fracture does not rule out intracranial injury but can be used to risk stratify.
Sensitivity of 94%-100%. Specificity of 95%-96%.  (albeit less literature on this topic)
Skull x-rays have sensitivity 38% and specificity of 95%
Place probe on area with maximal tenderness, hematoma, or other sign of possible fracture.  Scan in 2 planes.  Look for disruptions in cortex. Sutures can be identified by following cortical break to a fontanelle and/or comparing contralateral side. Fractures will have ragged, sharp margins. Sutures will have smooth appearance.
Pediatric ultrasound
Neonatal resuscitation
Maternal vitals and labs in pregnancy
Pediatric antibiotics
Cardiac ultrasound
Aortic ultrasound
IVC ultrasound
Ultrasound 