Assertion: Magnetic resonance imaging (MRI) is a useful diagnostic tool for producing images of various parts of human body.
Reason: Protons of various tissues of the human body play a role in MRI.

Options

A. If both the assertion and reason are true and reason is a true explanation of the assertion.
B. If both the assertion and reason are true but the reason is not the correct explanation of assertion.
C. If the assertion is true is true but reason is false.
D. If both the assertion and reason are false.

Answer

B

Explanation

Spin technology, called magnetic resonance imaging (MRI), has been applied to medical diagnostics with great success. The protons of the various tissues of the human body are situated in many different local magnetic environments. When the body, or part of it, is immersed in a strong external magnetic field, these environmental differences can detected by spin-flip techniques and translated by computer processing into an image resembling those produced by X-rays.
Hence, option `(b)` is ture.