What is the information carrier for mri equipment

Electromagnetic waves. mri equipment is a medical imaging system that utilizes a magnetic field and radiofrequency electromagnetic waves to produce images of the internal structure of the human body. It does this by placing the human body in a strong magnetic field and using radiofrequency electromagnetic waves to be emitted into the body, causing the hydrogen nuclei in the body to **** vibrate and absorb energy. When the radio frequency electromagnetic wave stops transmitting, the hydrogen nucleus will release the absorbed energy at a specific frequency, which is received and converted into an electrical signal, and then processed by a computer to form an image. In addition, electromagnetic waves have good penetrability, can effectively penetrate the human body tissues, and act on the hydrogen nucleus in the human body. By measuring the signal change after the interaction between electromagnetic wave and hydrogen nucleus, the distribution information of hydrogen nucleus in the tissue can be obtained, and then generate images.