Neuro Sonogram Ultrasound Scan

Definition in plain language

A NEUROSONOGRAM ULTRASOUND is a “brain ultrasound.” A small probe placed on your baby’s soft spot sends harmless sound waves into the skull. The echoes create live pictures that doctors use to check brain structure and blood flow.

Why parents search for this test

Most parents look it up after hearing terms like:

• “cranial ultrasound for newborns”
• “premature baby brain scan”
• “rule out IVH (brain bleed)”
• “macrocephaly evaluation”

Key takeaway summary box

• No needles, no radiation.
• Done at the cot side if baby is in NICU.
• Results available the same day at Cadabams Diagnostics.

Explanation of cranial ultrasound technique

A high-frequency ultrasound probe is coated with warm gel and gently moved over the anterior fontanelle—the diamond-shaped soft spot on top of your baby’s head. Sound waves bounce back and instantly form images on a monitor.

Differences from other brain scans

Equipment used

• High-resolution linear or curved-array probe (7–12 MHz).
• Portable ultrasound machine for bedside use.
• Sterile gel packet and soft swaddling blanket.

1. Standard anterior-fontanelle scan – Basic structural views.
2. Posterior & mastoid fontanelle views – Better look at cerebellum and brainstem.
3. Doppler neurosonography – Measures blood-flow velocities in MCA, ACA and other cerebral arteries.

• Ventricular size & symmetry
• Germinal matrix integrity (look for bleeds)
• Cortical mantle thickness (brain tissue volume)
• Resistive index (RI) & peak systolic velocity in MCA

• Screen for intraventricular hemorrhage (IVH)
• Detect periventricular leukomalacia (PVL) – soft tissue injury common in pre-terms
• Track hydrocephalus – monitoring fluid build-up over time

Ideal age range

• 0–12 months while the anterior fontanelle is still open.

High-risk newborns & premature infants

• Gestational age < 32 weeks
• Birth weight < 1,500 g
• Respiratory distress at birth
• APGAR score < 5 at 5 minutes

Signs prompting referral

• Seizures or jitteriness
• Rapid head growth (macrocephaly)
• Bulging fontanelle
• Low muscle tone or feeding difficulties

• Bedside & portable – performed inside NICU to avoid moving fragile babies.
• No sedation – baby simply needs to stay still for a few minutes.
• Real-time dynamic imaging – see blood pulsing live on the screen.

• Feeding: Give your baby a small feed 30 minutes before the scan; a calm baby lies still.
• Comfort positioning: Swaddle or use a pacifier.
• What to bring:
• Referral letter from paediatrician
• Immunisation card (for age confirmation)
• Favourite blanket or toy

• Open anterior fontanelle
• Paediatric referral note (hard copy or digital)
• Brief clinical history – birth weight, gestational age, current medications

• First scan within 7 days for pre-term infants.
• Follow-up at 4–6 weeks corrected age to check for evolving PVL or hydrocephalus.

• Age limit: Infants under 12 months (fontanelle must be open).
• Stable vitals: No active resuscitation or severe respiratory distress at the time of scan.

1. Baby lies on a warm cot, head turned slightly to the side.
2. A small amount of gel is applied to the fontanelle.
3. Probe moved gently in three planes (coronal, sagittal, axial).
4. Doppler mode switched on for blood-flow check if ordered.
5. Images captured and stored in PACS for radiologist review.
6. Typical duration: 10–15 minutes. Parents can hold tiny hands throughout.

• Skull defects: Large cephalohematoma or recent cranial surgery may block the sound window.
• Infection risk: Probe covers are single-use and sterile.

• No radiation risk—uses non-ionizing sound waves.
• Limited imaging window once the fontanelle closes (usually after 12–15 months).
• Operator-dependency: Quality depends on the sonographer’s experience. At Cadabams Diagnostics, paediatric neuro-radiologists personally review every scan.