Can a pregnant woman undergo any diagnostic imaging test?

Yes, a pregnant woman can undergo certain diagnostic imaging tests when medically necessary, but you must always inform your doctor about your pregnancy or the possibility of pregnancy before the procedure [2]. Choosing the type of examination depends on a careful balance between the mother's need for treatment and diagnosis and ensuring the safety of the fetus. Ultrasound is the first and safest option because it does not use ionizing radiation, while other examinations require an individual clinical assessment [3].

Ultrasound and the Safe Option

Ultrasound is considered the most common and safe imaging tool during pregnancy. This technique relies on sound waves to produce images of the fetus or the mother's internal organs, and there is no evidence of risks associated with it during pregnancy [3]. It is used in examinations such as echocardiography or fetal assessment, providing immediate images without exposing the pregnant woman to any radiation [1].

Magnetic Resonance Imaging (MRI) During Pregnancy

MRI is a powerful diagnostic tool that uses magnetic fields and radio waves instead of ionizing radiation. There are no proven risks to the mother or fetus from an MRI scan; in fact, doctors may recommend it if the examination is necessary to diagnose a medical condition that cannot wait until after delivery [3]. If initial examinations like ultrasound are insufficient for a clear medical answer, MRI may be used as a safe option, emphasizing that the greatest benefit lies in stabilizing the mother's health so she can safely carry the pregnancy to term [3]. Please review the following link for more on Diagnostic Imaging: When do you need X-rays, MRI, or CT scans? (Arabic).

Handling Radiation (X-rays and CT Scans)

For examinations that use radiation, such as X-rays or Computed Tomography (CT) scans, doctors typically prefer using non-radiation alternatives like ultrasound or MRI whenever possible. However, being pregnant does not mean these tests are strictly prohibited if they are necessary for urgent medical diagnosis, as the benefits are weighed against potential risks [3]. A radiologist and the healthcare team always review the case to ensure the lowest possible radiation dose is used when absolutely necessary, and they avoid using contrast agents (dyes) unless strictly essential to complete the diagnosis [3].

Important Advice and Guidelines for Pregnant Women

If you are pregnant and your doctor requests an imaging test, be sure to ask the following questions: Is this test necessary now, or can it be postponed? Are there alternatives that do not rely on radiation? You should also inform the radiology technician and the attending physician about your condition immediately, as this allows them to take appropriate protective measures, such as reducing exposure time or shielding specific areas of the body if necessary [2]. Remember that anxiety about the examination should not lead you to refuse a critical medical diagnosis for your health, as maintaining the mother's health is a fundamental pillar for the fetus's safety [3].

Medical references

• Echocardiography
• Diagnostic Imaging
• Patient Safety - MRI During Pregnancy