Which of the following types of wave is used by computed tomography employed for visualisation of the internal structure of human body?
A
X-rays
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B
Sound waves
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C
Magnetic resonance
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D
Radioisotopes
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Solution
The correct option is A X-rays Computed tomography is a diagnostic imaging procedure that uses X-rays to build cross-sectional images ("slices") of the body.
CT is based on the fundamental principle that the density of the tissue passed by the X-ray beam can be measured from the calculation of the attenuation of X-ray intensity. Using this principle, CT allows the reconstruction of the density of the body.