Write about the procedure involved in MRI.

Explanation

MRI scan (Magnetic Resonance Imaging) is a diagnostic Radiology Technique. MRI is a non invasive medical imaging technique that helps physicians, diagnose certain anatomical abnormalities .or pathological conditions. MRI scanner and procedure : MRI scanner is a giant circular magnetic tube. The patient is placed on a movable bed that is inserted into the magnet. Human body is mainly composed of - water molecules which contain two hydrogen nuclei /protons, each. The magnet creates a strong .magnetic field. that makes these protons align with the direction of the magnetic field (protons are not aligned under normal conditions). A second radiofrequency electromagnetic field is then turned on for a .brief period.. The "protons. absorb sore energy from these .radio waves. When this second radio frequency emitting field. is turned off, the protons release energy at a radio frequency which can be detected by the MRI scanner (the protons return to their .equilibrium state. from the .energized state at different relaxation rates).