Magnetic and fitness equipment in the application of

Rare earth permanent magnet has been used as magnetic and fitness equipment, such as medical static magnetic disk or magnetic ball, magnetic machine, magnetic cups, magnetic shoes, hats, necklaces, etc.. In recent years the development of a magnetic resonance imaging device called a new human disease diagnostic equipment. All part of the body's cells made from carbon, hydrogen, oxygen and other atoms, nuclei with nuclear magnetic moment, nuclear magnetic moment in zero magnetic field orientation is no rule, but in DC magnetic field, the nuclear magnetic moment to constant magnetic field as the axis Nutation for the campaign, as a gyroscope to gravity as the axis for the same precession. Nuclear magnetic precession frequency proportional to the constant magnetic field intensity. When nuclear magnetic moment at the same time in the constant magnetic field of nuclear alternating field (such as RF magnetic field), and alternating frequency and nuclear magnetic field inherent with the same frequency, there will be resonance phenomenon. At this point remove the alternating magnetic field, the resonance phenomenon gradually decay, resonant amplitude reduced to a critical value as the time required for relaxation time. It was found that human lesions and normal tissue relaxation time different. NMR imaging devices is the use of human and normal tissue lesions NMR relaxation time different principle of human cells to the lesion. Its characteristics are to the early diagnosis of human cancer lesions, and the use of a gradient field of human fault can be analyzed to determine the lesion site.

Tags: neodymium magnets magnetic,magnet,permanent magnet Smco magnets