核磁共振对人体有危害吗 李伟东 吉林省脑科医院 скачать в хорошем качестве

核磁共振对人体有危害吗 李伟东 吉林省脑科医院

核磁共振对人体有危害吗 李伟东 吉林省脑科医院 核磁共振的基本原理是将人体置于特殊的磁场中，利用人体内氢原子核，通过射频脉冲产生共振，用计算机处理后获得图像以诊断疾病，它对疾病的诊断具有很大的优势性，人体内含有大量的水分，人体体重的2/3都是水，所以说氢原子含量比较高，核磁共振就是用了氢原子核的作用，然后产生磁场可以作出横断面、矢状面、冠状面和各斜面的体征图像，没有电离辐射，对机体没有不良影响。 Is MRI harmful to human body The basic principle of NMR is to place the human body in a special magnetic field, Using the hydrogen nucleus in the human body, Resonance is generated by RF pulse, The image is processed by computer to diagnose the disease, It has a great advantage in the diagnosis of diseases, There is a lot of water in the human body, Two thirds of the body weight is water, So the hydrogen atom content is relatively high, Nuclear magnetic resonance uses the function of hydrogen nucleus, Then the magnetic field can be generated to make the physical signs images of cross section, sagittal plane, coronal plane and each inclined plane, No ionizing radiation, There is no adverse effect on the body.