What is an Ultrasound?

During an ultrasound, a small painless transducer (probe) captures images either externally or internally.  The high-frequency sound waves are translated into a pattern of light and dark areas creating an image of the baby on a monitor for you to see.

Are Ultrasound examinations safe?

There are no known harmful biological effects from diagnostic ultrasound. Ultrasounds are part of routine prenatal care.

How much is an Ultrasound?

Eyewitness for Life ultrasounds are FREE.

What can be seen in the ultrasound?

Life in the womb is so hidden that it is hard to envision. But with ultrasound, as early as five weeks after conception, the heartbeat can be identified and by ten weeks, the baby is very active in the womb. Through ultrasound, a window to the womb, one can watch as the child jumps, turns, sucks her thumb, scratches his chin, hiccups, yawns and sleeps.

Once you have seen your ultrasound, many of your doubts and fears about pregnancy may be eased.


  • Only 3-4 weeks after conception, you can see the gestational sac in the uterus. Inside the gestational sac is the yolk sac which provides nutrition for the tiny baby.
  • 5 weeks after conception: Baby can be seen on ultrasound with amniotic fluid around it. The baby is about the size of a pencil eraser. The beating heart can be seen on ultrasound. Average heart rate is 131 beats per minute.
  • 6 weeks after conception: Arm and leg buds can be seen on ultrasound and baby can be seen moving. The placenta can be seen on ultrasound. A light touch to the baby’s mouth at this age will cause the baby’s head to withdraw, and the body will twist. Ears begin to take shape.
  • 7 weeks after conception: The baby is about ¾ inch long. Average heart rate is 170 beats per minute. The baby’s head and body are more distinct on ultrasound and the umbilical cord can be seen.
  • 8 weeks after conception: His or her eyelids begin to close to protect the developing eyes.
  • 9 weeks after conception: Thumb sucking begins and the baby can stretch,
  • 10 weeks after conception: Arms, legs, fingers and toes can be seen on ultrasound. The baby is VERY active and can be seen doing kicks and flips on ultrasound. Fingerprints form.
  • 12 weeks after conception: The baby is over 3 inches long. At this stage you can also hear the baby’s heart beating with something called “Doppler Ultrasound”
  • 14 weeks after conception: Fetal internal organs can be seen on ultrasound. Sometimes, external reproductive organs can be identified on ultrasound (you may be able to see if the baby is a boy or girl).
  • 16 weeks after conception: The baby will begin to hear.   On ultrasound, you can see very well the internal organs (ie chambers of the heart, kidneys, stomach, bladder, number and length of the bones, brain anatomy, facial features, ears)
  • 18 weeks after conception to birth: The baby is over 6 inches long at 18 weeks after conception and you might even be able to feel him or her move! On ultrasound, the baby’s internal organs, movements, heart activity, swallowing,hiccups, face, fingers and toes are bigger and more recognizable. The baby continues to grow until his or her birth!

www.ehd.org, www.mayoclinic.org

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Why an Ultrasound?

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Why an Ultrasound?

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