ABSTRACT
MRI is one of the most important technical tools for the diagnostic process developed in the recent period. Modern MRI systems provide highly detailed images of tissue in the body with fast scan, reducing the examination time for the best comfort of the patient. With the MRI, it is possible to study the human body and the internal organs producing high-quality images without the use of ionizing radiation. This imaging technique is based on the resonance physics phenomenon that practically is the way to exchange energy between
physical systems at particular frequencies, which is the characteristic, in some way, of these systems; these frequencies are called natural frequencies of the system. Under these conditions, energy flows from one system to the other with none or little dumping and can be efficiently stored by the living matter under investigation. The relaxation phenomena of the living matter can give much information to be used for the image construction.
