By creating a large strong magnetic field, signals will be revived in the body and these will be revised to produce an image. This image can be monitored. Using this technique, simple profiles of the body, joints and some organs can be made, just like it has been sliced. The images are 3 dimensional. The biggest advantage is that there is no harmful x-ray radiation being used.
It is important that you get properly informed about preventative medical examination, such as the Total Body Scan. Knowing what the limitations, the advantages or disadvantages of specific examination methods are, prevents an incorrect expectation.