The original poster of the meme (@ZiziFothSi on X) captioned four fetal MRIs, "The real reason they discourage MRIs in pregnancy is ... at it,” she adds. An ultrasound uses sound waves to ...
Low first trimester vitamin D concentrations are associated with risk for preterm birth; higher levels correlate with fetal growth.
Volunteers must be at least 18 years old and must have had a previous ultrasound after 18 weeks of pregnancy. They should also bring a USB drive with at least 1GB of storage space for the images.
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