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An ultrasound is a non-invasive diagnostic test produced by sound waves formed into energy. These sound waves produce results that are converted into images of the internal organs or, in the case of a pregnancy, the fetus within the womb. During an ultrasound, the administrator will apply a gel to the skin of the patient, and gently move a transponder over the skin to obtain the images needed to determine the health of the fetus.

USUAL AND CUSTOMARY OBSTETRICAL ULTRASOUND TESTING

Please remember, sometimes the schedules vary based upon your specific pregnancy requirements and office schedules.

1. Viability and dating ultrasound: around 7-8 weeks gestation
2. Nuchal translucency ultrasound: 12 weeks is best but can be performed between 11 and 13 weeks gestation
3. Structural survey ultrasound: 20-21 weeks gestation but may be performed a little earlier or later
4. Fetal position and estimated fetal weight: usually around 37-38 weeks gestation but may be ordered earlier if indicated

How long does an ultrasound take?

An ultrasound normally takes approximately 30 minutes to complete.

What can be expected during an ultrasound?

An ultrasound is a non-invasive diagnostic test done on an out-patient basis. During the test, the patient is conscious and experiences little to no discomfort. Results are discussed with the doctor.

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