Cranial Ultrasound for Babies: Head Scans, Soft Spots and Results

Cranial ultrasound is a head scan used to examine a baby’s brain and its fluid-filled spaces. The operator places the probe over a fontanelle, often called a soft spot. The gaps between the skull bones provide a window for sound waves, allowing images to be obtained without X-rays.

Why might a baby need a head ultrasound?

It is commonly used in premature babies to assess problems associated with prematurity, including bleeding and changes in brain tissue. It can also help assess enlarged fluid spaces and selected structural concerns. A term baby may be scanned when the clinical team has a specific reason.

The schedule depends on the baby’s gestational age, condition and earlier findings. A repeat examination may be part of planned monitoring rather than evidence that something new has gone wrong. Ask the neonatal team which question each scan is intended to answer.

How is the scan performed?

The scan can often be done while the baby remains in a cot or incubator. Gel is applied and the probe is moved gently over the soft spot to obtain different views. The baby may feel the pressure of the probe or the cool gel. Staff can help keep the baby comfortable and settled.

Do not withhold feeds unless the baby’s clinical team instructs you to do so. Ask whether you can be present and whether feeding or comfort measures can be coordinated with the examination. Instructions may differ if the baby has other medical needs or procedures planned.

What does the result tell you?

The report describes what was seen during that examination. The neonatal clinician should explain the findings in the context of the baby’s overall condition and development. If further scans or another imaging test are recommended, ask what additional information they are expected to provide.

A report should not be reduced to one unfamiliar word or measurement. Ask whether a finding is definite or uncertain, whether it has changed and what follow-up is needed. Keep the discharge summary and scan information available for the paediatric team after going home.

Is this the same as transcranial Doppler?

No. Infant head ultrasound primarily shows brain structures through the soft spots. Transcranial Doppler assesses blood-flow direction and speed in major arteries supplying the brain and can be used in selected children and adults. Confirm the exact examination on the referral rather than booking a generic “brain ultrasound.”

Equipment and other infant scans

For a separate newborn screening question, read the baby hip ultrasound guide. Facilities choosing paediatric ultrasound equipment in Pakistan should confirm the probes and clinical applications required by their trained team; a general product description cannot establish suitability for every neonatal service.

Sources

ACR/RSNA: cranial ultrasound; Worcestershire Acute Hospitals: cranial ultrasound. Reviewed 13 November 2026. General education; individual findings need clinical interpretation.