Sample MR imaging protocol for suspected PHACE syndrome^{^a}

Sequence	Feature Evaluated
Coronal and axial T2 fat-suppressed head and neck	Facial hemangioma, extent of lesion, possible hemangioma in airway
Axial DWI brain	Acute ischemia
Sagittal T1 or spoiled gradient-echo head and neck	Midline intracranial structures including pituitary gland, myelination
Axial ASL head and neck	Cerebral blood flow, hemangioma
Axial time-of-flight MRA head and neck	Arterial abnormalities
Coronal contrast-enhanced dynamic MRA/MRV neck, if needed	Arterial abnormalities, including evaluation of the aortic arch
Axial contrast-enhanced T1 fat-suppressed head and neck	Enhancement pattern
Coronal contrast-enhanced T1 fat-suppressed internal auditory canals	Hemangioma in the internal auditory canals