MRIs contain extremely strong magnets and their magnetic strength can be measured in units of
a) Megapascals
b) Tesla
c) Watts
d) Farads
Question 2
What the magnetic resonance imaging machine actually measures is the relaxation time. Relaxation time is
a) what occurs when brain waves are relatively slow at 4 to 8 Hz
b) the interval that follows the pulse, which is the time taken by the atoms to return to their normal and random state
c) a term for the method for studying tissues using magnetic fields and radio receivers
d) the amount of time that it takes an individual to become relaxed enough that the atoms in their body polarize
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Distribution of skin color as measured by a reflectometer at a wavelength of 685 nm. The results are