Head circumference measurements, re

Head circumference measurements, repeated over time, may show that the head is getting bigger.
A head CT scan is one of the best tests for identifying hydrocephalus. Other tests that may be done include:
• Arteriography
• Brain scan using radioisotopes
• Cranial ultrasound (an ultrasound of the brain)
• Lumbar puncture and examination of the cerebrospinal fluid (rarely done)
• Skull x-rays