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The Physical Principles Of Nuclear Magnetic Resonance Imaging
Feb 15, 2017

Magnetic resonance imaging is with computer technology, electronics technology, superconductor technology develops rapidly with the development of a bio-magnetic nuclear spin tomography. Doctors take into account the patient's "nuclear" fears, so this technique is often referred to as magnetic resonance imaging. It is the use of magnetic fields and RF pulses in human tissue the precession protons (h +) nutation RF signal generated by computer processing and Imaging.

In nuclear precession, absorb the RF Pulse with the same nuclear precession frequencies, the frequency of the applied alternating magnetic field is equal to the frequency of Rameau, nuclear resonance absorption occurs, remove the RF Pulse, nuclear magnetic moment of the atom is part of the absorbed energy in the form of electromagnetic waves emitted, called resonance emission. Resonance absorption and resonance emission process is known as "magnetic resonance".

Magnetic resonance imaging of the "core" refers to the hydrogen nuclei, as about 70% of the human body is made up of water, hydrogen atom in a MRI-rely on water. If objects are placed in a magnetic field, with appropriate exposure to electromagnetic waves, resonance, and electromagnetic wave analysis it released, will show that form the nucleus of the object location and type of object can be drawn precisely within the stereo image.