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Question

Scientists were able to pinpoint the location of color processing centres in the visual cortex of the brain by means of

A
PET
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B
NMR
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C
CT
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D
X - ray
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E
Ultra sound imaging
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Solution

The correct option is A PET
Brain is a difficult organ to work upon because it is enclosed in a bony skull and is not easily accessible. The function of various areas of brain are worked out through PET Scan. In PET scan, radioactive tracer is used which allows radiologist to see areas of brain clearly. The tracer travels to brain through blood and its concentration in various parts is monitored.

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