Matters needing attention in nuclear magnetic resonance vibration
First, take out the metal objects from the body.
Before the inspection, all the metal objects in your body should be removed, because the magnetic field will be used in the inspection process, and the magnetic field can easily adsorb metal objects. If some metals in your body are not removed, the test results may be affected.
Second, an empty stomach
If you have an abdominal and magnetic resonance examination, you need to pay attention to your diet the day before the examination, but you can't eat after 8 pm the day before, so you can drink water properly. You must keep an empty stomach, lest food affect the test results.
Third, let the body relax.
Many people will make themselves too anxious and nervous before doing MRI, and some even have some problems during the examination because of claustrophobia, so they should relax themselves during the examination, and if necessary, they can ask doctors to help them use some anti-anxiety drugs to stabilize themselves.
Fourth, there is a large area of tattoos on the body that cannot be carried out.
Patients should communicate with their doctors before they need an MRI. If they have large tattoos, they should be careful not to have them examined, because the pigments used in the tattoos will react during the examination, making the patients' skin feel uncomfortable and burning.
The nuclear magnetic resonance * * vibration is a physical process in which the spin energy level of the nucleus with non-zero magnetic moment splits Zeeman under the action of an external magnetic field, and the * * vibration absorbs a certain frequency of radio frequency radiation. Nuclear magnetic resonance spectrum is a branch of spectroscopy, its vibration frequency is in radio frequency band, and the corresponding transition is the transition of nuclear spin in nuclear Zeeman level.
Application of magnetic resonance imaging: Magnetic resonance imaging (MRI) has become a common image examination method. As a new imaging examination technology, MRI will not affect human health, but there are six groups of people who are not suitable for MRI examination, namely, those who have installed pacemakers, those who have or are suspected to have metal foreign bodies in their eyeballs, and those who have silver clip ligation of aneurysms. No monitoring instruments, rescue equipment, etc. Enter the MRI room. In addition, pregnant women less than 3 months pregnant, it is best not to do magnetic resonance imaging.