Diagnosis & Imaging
Fetal MRI
Fetal MRI is a detailed prenatal imaging test that provides additional information about a baby's brain when hydrocephalus is suspected.
In short: Fetal MRI
- It provides detailed images of the baby's brain before birth.
- It is used to add information when ultrasound finds a concern.
- It does not use radiation.
- It helps identify causes and associated conditions.
What it is
Fetal MRI is magnetic resonance imaging performed during pregnancy to obtain detailed pictures of the developing baby's brain. It is often used to add information when prenatal ultrasound has identified ventriculomegaly or possible hydrocephalus.
Understanding Fetal MRI
While ultrasound is the first-line prenatal imaging test, fetal MRI can provide more detailed views of the brain's structure, helping to clarify the cause of ventricular enlargement (such as aqueductal stenosis or a malformation) and to identify associated conditions. It does not use radiation. The added detail can refine the diagnosis, inform counseling about the likely outlook, and help plan for delivery and care. Fetal MRI is performed at centers with the needed expertise and is used selectively, when the additional information will help guide decisions. It complements, rather than replaces, prenatal ultrasound.
Why it matters
Understanding fetal MRI helps families see how detailed prenatal brain imaging can clarify the cause and associated findings of hydrocephalus before birth, refining counseling and planning.
Common questions
What does fetal MRI add?
More detailed images of the baby's brain than ultrasound alone.
Does it use radiation?
No.
When is it used?
Selectively, to add information when ultrasound finds a concern.
Bottom line
Fetal MRI is detailed, radiation-free prenatal brain imaging that helps clarify the cause and associated findings of hydrocephalus before birth.
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