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A bone scan, or x-ray is simply a different type of scan than an MRI. No kind of scan is better than another, it simply depends what the scan is trying to ascertain.
Certain modern CT scan techniques may show if you have a tendency or likelihood of Alzheimer's. Alzheimer's doesn't appear as a concrete thing but certain distance measurements from the brain ventricles to the mid line of the brain can be plotted by specialist doctors in a special table to determine the likelihood of Alzheimer's. The degree of atrophy of the brain can also indicate problems with senility.
A head scan looks primarily at the brain and a sinus scan looks only at the sinuses in the face region.
Manual Scan was created in 1981.
Traffic Control Devices
TCD means Tonne Sugar Cane crushed per day.
cat scan
magnetoencephalography
nanogram
Gram.
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ct scan
melimeters
Mg = milligrams.
Magnetic resonance imaging.
Positron Emission Tomography