Biological and medical communities Sintered NdFeB magnets Applications

" Biological and medical communities Sintered NdFeB magnets Applications " :

Pigeon enthusiasts know , if the pigeons flying to hundreds of kilometers away , they will automatically homing . Why is there such a good pigeon house skills recognize it ? Original , dove on the Earth Sintered NdFeB magnets field is very sensitive , they can use the Earth Sintered NdFeB magnets field changes find their own home. If the pigeon 's head tied a Sintered NdFeB magnets, pigeons will Trek . If a pigeon flew radio towers , a powerful electric wave interference Sintered NdFeB magnets also make them disoriented .

In medicine, the use of nuclear resonance Sintered NdFeB magnets can diagnose human abnormal tissue to determine disease, which is what we are more familiar with nuclear Sintered NdFeB magnets resonance imaging technology , the basic principle is as follows: positively charged nuclei and spin motion carried . Typically, the nuclear spin axes are arranged in non- regular, but will be applied Sintered NdFeB magnets placed in the field , the spatial orientation of the nuclear spin transition from disorder to order .

Sintered NdFeB magnets spin system of vector gradual increase from zero , when the system reaches equilibrium , Sintered NdFeB magnets of strength reaches a stable value . If at this time the role of nuclear spin system by outsiders , such as a certain frequency of the RF excitation nuclei can cause resonance effects . In the RF pulse stops, the nuclei spin system has been intensified , can not maintain this state , will revert to Sintered NdFeB magnets arranged in the original state of the field , while the release of weak energy , as radio signals , these many signals detected , and to the spatial resolution when , nuclei get motion distribution image .