PSY 320 Chapter Notes - Chapter 5.1: Ct Scan, Positron Emission Tomography, Magnetic Resonance Imaging
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Involve injecting into one compartment of the body a substance that absorbs x-rays either less than or more than the surrounding tissue. The injected substance then heightens the contrast between the compartment and the surrounding tissue during x ray photography: cerebral angigoraphy. Uses the infusion of a radio opaque dye into a cerebral artery to visualize the cerebral circuitry system during x ray photography. But the displacement of blood vessels from their normal position can indicate the location of a tumor: computerized tomography (ct) Computer assisted x ray procedure that can be used to visualize the brain and other internal structures of the living body. Rotates 9 times and then a computer combines images into three dimensional representation of the brain: magnetic resonance imaging. Procedure in which high resolution images are constructed from the measurement of waves that hydrogen atoms emit when they are activated by radio frequency waves in a magnetic field.
