BIO120H1 Chapter Notes -Positron Emission Tomography, Digital Subtraction Angiography, Magnetic Resonance Imaging
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BIO120H1 Full Course Notes
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Look at diagram on pg 73: radiography. Commonly used in dentistry, mammography, diagnosis of fractures and chest o o examination o differences in tissue density are not easily detected. Disadvantages - images of overlapping organs can be confusing, and slight. Technician slowly moves a small, handheld device across the body. Produces high frequency ultrasound waves, then receives signals that are: sonography o o reflected from internal organs o o o o. Used to determine fetal age: computed tomography (ct) o o o o. Thin slices of images are collected and combined sharper than those obtained by a conventional x-ray. Useful in identifying tumors, aneurysms, kidney stones, cerebral hemorrhages. Advantage that there is a little overlap of organs and the image is much o and other abnormalities: digital subtraction angiography (dsa) Modified 3d x-ray technique used primarily to observe blood vessels.
