A fetal MRI uses strong magnetic fields and radio waves to create detailed images of an unborn baby. This process is painless and doesn't expose the fetus to radiation.
Fetal MRI Explained
Fetal magnetic resonance imaging (MRI) is a medical imaging technique used during pregnancy to visualize the fetus in detail. Here's a breakdown of what happens:
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Purpose: It's used to get a clearer picture of the fetus than what is visible on ultrasound, especially when abnormalities are suspected.
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Mechanism: The MRI machine uses a strong magnetic field and radio waves. These interact with the baby's tissues, and the signals are then processed by a computer to create detailed images. According to the provided reference, "Fetal magnetic resonance imaging (or fetal MRI) uses a magnetic field and radio waves to create detailed pictures of an unborn baby."
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Safety: Fetal MRI is generally considered safe because it doesn't involve radiation exposure. The provided reference states, "This painless test does not expose the baby to radiation."
What to Expect During a Fetal MRI
While specifics can vary by facility, here's a general overview:
- Preparation: You might be asked to change into a gown.
- Positioning: You'll lie on a table that slides into the MRI machine. Pillows or cushions may be used to make you more comfortable.
- The Scan: During the scan, you'll need to lie still. The MRI machine will make loud noises (thumping, clicking). Earplugs or headphones are often provided.
- Duration: A fetal MRI typically takes between 30 to 60 minutes.
- Communication: You can usually communicate with the technician performing the scan through an intercom.
Key Takeaways
- Fetal MRI provides detailed images of the baby's organs and tissues.
- It's a non-invasive and painless procedure.
- Crucially, it does not use radiation.
- It supplements information obtained from ultrasound.
