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Because it has no proven benefit over 2D images, some insurance companies do not cover 4D imaging, even with a doctor's order. There is a strong consumer market for 4D ultrasound-even if it might pose as yet undiscovered risks. The American Institute of Ultrasound in Medicine (AIUM) and The American College of Obstetricians and Gynecology do not advocate the use of obstetric ultrasonography without a medical indication. CautionsĪs with other diagnostic imaging, 4D ultrasounds require a doctor’s order and a medical purpose. Women typically go home with a set of photographs and a CD with the moving images, which is why this ultrasound process is often called "keepsake fetal imaging.". Watching the fetus shift position and breathe, your doctor can check for problems.īeing able to view the developing child’s face may promote bonding. Just as a pediatrician begins an exam by observing a newborn, doctors assess the fetus from head to toe on screen. This may reveal more detail about fetal health and small movement. The fetus can viewed yawning, smiling, crying, swallowing, blinking, and moving fingers with 4D. Benefits of 3D/4D UltrasoundģD and 4D ultrasounds can display activities of the fetus that are not possible with 2D. The ability to obtain clear images and activity will depend on the stage of pregnancy and the position of the fetus during the ultrasound exam. Now, the life-like pictures can move and the activity of the fetus can be studied. A 4D ultrasound takes the images produced by 3D ultrasound and adds the element of movement. With 3D ultrasound, a volume of echoes is taken, stored digitally, and shaded to produce life-like images of the fetus. Although such an image is very informative to ultrasound professionals, to the average person, the picture may not look at all like a baby. In other words, the image is made up of thin slices, and only one slice can be seen at a time. The transducer may also be inserted into the vagina. A technician applies a gel before placing and moving the transducer over the skin. Ultrasound is generally safe for the developing baby and mother. These sound waves bounce back to the scanner and produce an image on a computer screen. Now, four-dimensional (4D) ultrasound lets women and doctors look at facial features and watch the growing baby move.Īn ultrasound scanner (or transducer) sends sound waves through the body. New Dimensions in Prenatal Ultrasound: 3D and 4Dįor years, doctors have relied on traditional ultrasound tests to learn how far along a woman is in her pregnancy, as well as the size, health, and position of the developing baby.