It seems that at present there is no direct use of magnetic fields for medical treatment, because the human body is not sensitive to magnetic fields, or the effect of magnetic fields on the human body is still unknown, as for the electromagnetic wave, but also may have an effect on the body only.
Of course, indirectly there are many, such as nuclear magnetic **** vibration, is the use of magnetic fields and proton **** vibration imaging, for the examination of the cause of the disease to provide help.