Engineering and the Advancement of Human Welfare 10 Outstanding Achievements 1964-1989 (1989) / Chapter Skim
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CAT Scan
CAT Scan
Pages 22-25
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From page 22... ...
The procedure has also revealed to researchers brain abnormalities in some persons suffering from schizophrenia, alcoholism, manic-depressive illness, and Alzheimer's disease. CAT scans locate brain tumors precisely for radiation treatment and are used to build three-dimensional models for reconstructive surgery.
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From page 23... ...
Instead, it constructs a television image C AT 5 C A ~ I A cross on this threedimensional image generated from a series of CAT scans marks the location of a tumor near the center of the patient's head. Color coding shows sensitive areas, such as the eyes, spinal cord, and lungs, that should be protected from unnecessary radiation when the tumor is treated.
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From page 24... ...
These highspeed computers and the mathematically complex programs to operate them made it possible to run millions of calculations for each slice. In 1979 the Nobel Prize in physiology or medicine was awarded to British research engineer Godfrey Hounsfield for pioneering the CAT scan and to U.S.
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From page 25... ...
The . ~ a_ continued development of CAT, ultrasound imaging, and especially MRI should further reduce the need for exploratory surgery or invasive imaging techniques such as those involving injection of contrast agents that may occasionally cause allergic reactions.
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