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The concerns in pregnancy are the same as for MRI in general, but the fetus may be more sensitive to the effects—particularly to heating and to noise. The use of gadolinium -based contrast media in pregnancy is an off-label indication and may be administered only in the lowest dose required to provide essential diagnostic information.
MRI of a fetus with Pentalogy of Cantrell. Magnetic resonance imaging (MRI), without MRI contrast agents, is not associated with any risk for the mother or the fetus, and together with medical ultrasonography, it is the technique of choice for medical imaging in pregnancy. [1]
Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to generate pictures of the anatomy and the physiological processes inside the body. MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to form images of the organs in the body.
A meta-analysis revealed 3.6 times greater odds (OR = 3.6) of pregnancy with oil-based contrast compared to no hysterosalpingography. [5] This effect is thought to be due to the flushing action of the contrast into the uterus that causes dislodgement of mucus plug, debris, or opening of mild adhesions in the fallopian tubes.
The opposite of an indication is a contraindication, [4] a reason to withhold a certain medical treatment because the risks of treatment clearly outweigh the benefits. In the United States, indications for prescription drugs are approved by the FDA. Indications are included in the Indications and Usage section of the Prescribing Information.
A review in 2003 came to the conclusion that pelvimetry does not change the management of pregnant women, and recommended that all women should be allowed a trial of labor regardless of pelvimetry results. [2] It considered routine performance of pelvimetry to be a waste of time, a potential liability, and an unnecessary discomfort. [2]
Rods can be located only through high-frequency ultrasound or magnetic resonance imaging (MRI). [24] It can be located using traditional X-ray or CT-scan because of the inclusion of barium sulphate. There have been rare reports of implants having reached the lung via the pulmonary artery. [33]
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