A normal human adult will have up to 60% of water within their body. Water is essential for survival and the assurance that all the systems in the body are functioning to achieve their purpose. The chemical structure of water composes of two hydrogen atoms attached to a single oxygen atom. Within the hydrogen’s nucleus there is a proton present and the protons respond sensitively in the presence of magnetic fields. Therefore when the magnets are activated, radio signals have been emitted from the MRI scanner to different areas of the body which results in the protons to fall out of their original position in the body. This is why gradient field coils are used and important in the use of MRI scanners because it serves as a way to set different frequencies for the magnetic field . Without the use of these coils, it will be difficult to distinguish through the …show more content…
During that time the proton undergoes precession where the orientation of the proton changes its rotational axis to allow the proton to spin in the same frequency that it received the radio pulse/absorbed in the body. Once the radio pulse being sent into the body has been absorbed, the proton goes from a low energy level to a high energy level. The sending of the pulse must be turned off in order to allow to determine the radio pulse being emitted from the body. Therefore the proton will spin in the same frequency as the absorbed radio