If we feel unwell, we usually go to the hospital for examination. There are many medical equipment for examination. Commonly used are CT and magnetic resonance examination. If you had to choose, which one would you choose?

Some people may choose MRI, because the image produced by MRI is clearer, but the doctor will not recommend you to do MRI. So why is MRI not recommended? Listen to what the doctor has to say below, the sooner you know, the better.

First let's understand what is nuclear magnetic resonance

Nuclear magnetic resonance is an imaging method to check whether there is a problem in the human body. The nucleus in nuclear magnetic resonance refers to the nucleus of hydrogen protons, which is the composition of water molecules in our body. Each hydrogen atom has a relatively small magnetic field. It is the use of this characteristic of the human body.

After the patient enters the magnetic field, the radio is used to stimulate the hydrogen atoms in the body, the hydrogen atoms, and the nucleus react with the surrounding magnetic field, which will generate some electromagnetic signals. These signals are projected onto the computer behind which controls the machine and then imaged.

There are many parts of the MRI examination, such as the nervous system, cardiovascular system, chest and abdomen, bones and joints, soft tissues of the whole body, Parkinson's or Alzheimer's will be examined by MRI.

Because the images obtained by MRI are clearer, it is helpful for doctors to judge the patient's condition, and there are many shooting angles, which can reduce the probability of misdiagnosis by doctors.

Why isn't an MRI scan recommended? The doctor tells you the answer, the sooner you know the better

take longer

When doing an MRI, it takes at least half an hour to an hour. Now people are busy with their work, and many people take time off to see a doctor, so they don't spend a lot of time in the hospital.

In addition, there are a lot of patients in the hospital, and the doctors are very busy. In order to save time, doctors do not recommend MRI examinations.

Some patients are not suitable

For patients with renal insufficiency, allergies, and poor coagulation function, it is not suitable for MRI. In addition, pregnant women, infants and other special groups are best not to undergo MRI. Some people with sudden illnesses need urgent treatment, so there is not as much time to wait until the MRI is done.

In addition, people with gas in their lungs and stomach, people with metals or pacemakers in their bodies, and people who are afraid of confined spaces should not undergo MRI.

If there is metal in the body, it is easy to cause metal displacement in the body when doing MRI again, and even serious consequences will occur, so doctors do not recommend MRI for these people.

High cost of examination and heavy burden on patients

When a patient goes to see a doctor, the doctor will help the patient select cost-effective examinations, such as B-ultrasound and CT. The price of MRI examination is relatively high, and the more parts to be examined, the higher the cost, so it will increase the burden on the patient. Each part must be done, and doctors generally do not recommend patients to do this test.