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It creates an image by bouncing ultrasound waves off of tissues inside the body (in this case, off of the baby).
This creates a flat, two-dimensional image of a three-dimensional baby.
Katz Rothman is by no means arguing against the use of prenatal testing; she actually presents a number of compelling reasons to consider it.
Her writing is a fair and balanced look at the intricacies and difficulties of this issue.
Prenatal testing has certain advantages and in some situations can be a great help.
Kmom uses certain types of prenatal testing herself, and under certain circumstances, might choose to use other types too.
However, since they may be at a somewhat increased risk for problems like neural tube defects, they also face greater pressure than others to have these prenatal tests, even though the tests are often difficult to interpret.Don't let any provider try to bully you into (or out of) tests---listen to their counsel, do your own research, and then MAKE YOUR OWN CHOICES.Ultrasounds use "sound" waves of extremely high frequencies to help figure out what is going on inside the uterus.They don't consider that intimately wrapped up in the question of prenatal testing is the moral dilemma of abortion and the thorny issue of eugenics.Barbara Katz Rothman points out: The history of prenatal diagnosis has roots in the eugenics movement..of its history has been an attempt to control the gates of life: to decide who is, and who is not, fit to make a contribution to the gene pool.
And because the overall bias of our technological culture is towards doing more and more testing, Kmom feels an extra responsibility to challenge the automatic assumption that more testing is better.