Summary: Multimodal Imaging of Normal Pregnancy
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So as we've seen, we can use multiple
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imaging modalities to evaluate pregnancy.
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Ultrasound is the first-line imaging modality
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for evaluation of the fetus, the uterus,
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and the ovaries in all three trimesters.
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But we can use CT and MRI, particularly
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in the context of trauma or
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troubleshooting as clinically indicated.
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A lot of patients will get imaged
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in the first trimester, primarily
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for evaluation of fetal viability.
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And when we're doing a first trimester
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ultrasound, it's important to identify
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the gestational sac, the embryo, embryonic
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cardiac activity, and the yolk sac.
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We also want to evaluate the internal cervical
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os to make sure that the cervix is closed
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and evaluate for subchorionic hematoma.
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In the second and third trimester,
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it becomes increasingly important to
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assess the amniotic fluid volume and the
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location and morphology of the placenta,
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particularly in cases of multiple gestations.
Erin Gomez, MD
Assistant Professor of Radiology
Johns Hopkins Hospital
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