磁共振检查有辐射吗对人体有无伤害 李强 重庆市綦江区人民医院 скачать в хорошем качестве

磁共振检查有辐射吗对人体有无伤害 李强 重庆市綦江区人民医院

磁共振检查有辐射吗对人体有无伤害 李强 重庆市綦江区人民医院 首先磁共振检查是没有辐射的，因为磁共振检查是利用人体的氢原子核给予人体射频脉冲，这个时候氢原子核吸收热量当体内射频脉冲后热量就释放出来，然后通过计算机处理就能得到不同信号的图像，它的成像原理决定了它没有任何电离辐射，现有证据证明它对人体没有任何的伤害包括孕妇儿童都是可以完全放心做的，但是磁共振也有一些不足，第一扫描时间比较长，一般来说一个部位都有十多分钟的时间有的病人在里面呆太久，他不能忍受；另一个就是磁共振检查的时候噪音比较大，分贝在80分贝以上有的人在进去检查的时候，噪音让人受不了，有的可能就不想照了甚至有的人可能会出来。磁共振检查是没有辐射的，这是由它的成像原理所决定的，它并不是利用X线来成像。虽然磁共振没有辐射，但也有一些其他的缺点，如检查时间长噪声大等。 Is there any radiation in MRI and does it harm human body First of all, there is no radiation in MRI, Because MRI is to use the human body's hydrogen nucleus to give the human body RF pulse, At this time, the hydrogen nucleus absorbs heat, and the heat is released after the body's RF pulse, Then through computer processing, we can get images of different signals, Its imaging principle determines that it has no ionizing radiation, The existing evidence shows that it can do no harm to human body, including pregnant women and children, But Mr also has some shortcomings, The first scan takes a long time, Generally speaking, there are more than ten minutes in a site, and some patients stay in it too long, He can't stand it; The other is that the MRI is noisy, The decibel is more than 80 decibels. Some people go in to check, The noise is unbearable, Some may not want to take photos or even some people may come out. There is no radiation on MRI, This is determined by its imaging principle, It doesn't use X-rays for imaging. Although there is no radiation from MRI, But there are other disadvantages, Such as long inspection time, loud noise, etc.