Heritage: The Story of St. Mary's Hospital, 1880-1980
By Leo G. Bryne and Sister Alberta Cammack, C.S.J
Chapter III Contemporary St. Mary's
Another diagnostic technique has been introduced by the Ultrasound Scanner, which consists of a machine for viewing and a scanning apparatus. Ultrasound picks up different densities in body tissue and provides accurate cross-sectional views and the visualization of internal organs. The transducer at the end of the scanning arm emits sound waves and receives them back in echo patterns which differ according to tissue density. It defines metastatic changes in the liver and pancreas and also identifies gall stones, aneurysms, cysts, and tumors. There is no radiation danger in the procedure, and it is especially useful for determining the fetal age of an unborn child by measuring the size of the baby's head, thus making it possible to predict more accurately the time of birth. The mother is able to see the image of her unborn child, kicking and moving and sucking its thumb, and with the right profile, she might know she has a boy.
Continue with Chapter III: Contemporary St. Mary's Gastroenterology Laboratory