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Angioplasty GPS Floppy discs Pong Liposuction The Concorde Rubik's Cube CT scans...
Once you have chosen a doctor and made an appointment, gather all your medical records, laboratory-test results, X rays and CT scans. If you don't have them, call your previous doctor and ask for copies...
1970s Computed Tomography (CT...
...CT scans represent a major advance over the simple X ray, which did not allow doctors to visualize brain tissue at all. Instead of a flat, two-dimensional X-ray picture, CT scanners produce a series of successive images. Taken as the patient, lying down, moves through a scanning ring, these "slices" can be combined to create the illusion of depth. The resulting pictures of bone and soft tissue can help doctors distinguish between patients with a psychiatric disorder and those with head trauma (which can trigger similar symptoms). CTs have been particularly useful in identifying schizophrenia patients...
This technology takes advantage of the body's natural magnetic field, measuring changes in the field's energy as patients are exposed to various radiofrequencies. Unlike CT views, MRIs can be rendered in full 3-D because MRI machines can slice along three or more planes, not just one. A computer can then compile the information to generate a sort of relief map of the brain, left, depicting even the smallest brain structures (for example, the brain's center for emotion, the amygdala, in yellow, is deeply buried but visible). Using MRIs, scientists have learned that the brains of schizophrenics...