Word: ultrasounds
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...wisdom of Solomon. For 18 months, a couple had been trying without success to conceive a child. Then the wife became pregnant with fraternal twins. Because the woman, who had never before given birth, was 40 years old, she underwent amniocentesis in the 17th week of pregnancy. Guided by ultrasound scans, doctors inserted a needle through the woman's abdomen and into the separate amniotic sacs, withdrawing a sample of the fluid that cushioned each of the developing children. The fluid contained cells shed by the fetuses, and these were analyzed for genetic abnormalities. The samples revealed that both...
...year ago by a team led by Dr. Thomas Kerenyi at Manhattan's Mount Sinai Medical Center. The attempt was made in the 20th week of pregnancy, when the fetus weighs about 10 oz. and is about 10 in. long. A series of pictures taken during the earlier ultrasound scanning helped locate the abnormal twin, though not with certainty; Kerenyi put his chances at "much better than 50-50." Doctors then used sound waves to pinpoint the tiny beating heart. On their second attempt, they pierced the heart with a thin needle and withdrew about half the fetus...
...Ultrasound Imaging. Also known as echocardiography, this is probably the most widely used noninvasive test. By bouncing high-frequency sound waves off the heart in much the same way that surface ships search for submarines, physicians can get a picture of the heart's interior, its chambers and valves...
...Electronic fetal monitoring is used in many hospital maternity units during labor and delivery. A sonar-like ultrasound system keeps track of the baby's heart rate, and an electrically wired belt across the mother's abdomen notes uterine contractions. Electrodes are attached to the baby's head to get an electrocardiogram. Blood samples for analysis may be drawn from the baby's scalp. The object: to detect fetal problems early enough for physicians to intervene. The U.S. spends some $80 million a year on this effort, and the fetal death rate...
Psychosurgery involves the destruction of a small section of brain--known as the amygdala--which supposedly controls aggressive behavior. A number of methods can be used to destroy the tissue, including ultrasound or laser beams. Only a very small section of tissue, about 1/600 of an inch, is damaged in the process...