Rotating electric charge creates a magnetic field. Atoms possess magnetic fields as the charges within the atom are spinning around their own axis. In MRI technology atoms of hydrogen are used to be magnetized along the direction of external applied magnetic field. Hydrogen is used due to its abundance in water (H20), making up 80% of our body. Additionally, it is used due to a topic concerned within quantum physics known as Gyro Magnetic Ratio. The Gyro Magnetic Ratio varies from proton to proton. However, hydrogen occurs to have the largest Gyro Magnetic Ratio of 42.57 MHz/Tesla. Although hydrogen is used within MRI, essentially any element with an odd number of particles in the nucleus can be used.