The MRI thing isn t particularly bumpy

Not as you understand it! Instead, it lies motionless for a while. Our machine here needs to lie down for 20 minutes to shine out, and the better machine has a shorter time.

The pain is because you are lying alone in a room, and people who are not used to it will find it difficult.

If you have metal in your body, you ......Let's take an analogy: there is a piece of tofu with an iron nail in it, and you can suck the nail out with a magnet from the outside. If the person is the tofu, the metal in the body is the iron nail.

The bumps will not, the person is lying down, very stable, but the sound is a bit loud, and the time is a little long, generally about 15 minutes.

The principle of magnetic resonance is to use the resonance of protons in the human body to reveal the internal structure, because protons are microscopic and people can't feel them at all, so you won't feel that they are vibrating, so there is no pain.

If there is metal in the body, there will be artifacts, that is, it will affect the quality of **, so that some places can not be seen clearly.

Relatively speaking, MRI is clearer than CT, but CT is generally sufficient. Relatively affordable. Hope it works for you!!

The two tests look at different things.

In some cases, the two tests complement each other and it is not possible to say who is better than whom.

Of course not, they're all radiologists. But MRI is much more expensive.

It's been two months, the head should be fine, you have a CT scan on your waist, if there is no spinal injury or herniated disc, it should not be a spinal cord problem. If it weren't for the above two problems, there would be no need for magnetic resonance. Of course, if you really want to rest assured, you can take a look.

Your thoughts can be better listened to by the doctor if you are hospitalized.

No bleeding is the scariest thing! It is best to have an MRI. When I was injured while playing ball, the x-ray showed that it was fine, but it was very painful and I had an MRI, which is really fortunate to think about it now! I had torn meniscus and ligaments.

That Beijing Director Zhang, I "convinced" and "I will give you the correct answer." You do a root canal ** is to extract the nerve in the tooth, so the original place where you are nervous is empty, empty is easy to enter bacteria, so you have to fill the root, the different color of the "needle" is actually not a needle, its scientific name is teether tip. It is a kind of teether made into a needle to fill into the root of your tooth, so as to better fill it, so that bacteria are not easy to enter.

This is made of teether, not metal, rest assured, it will not affect the MRI. If you want to have a crown in the future, you should consider that the crown should also be made of materials that do not affect the MRI. If you want to do a crown, ask me specifically then.

The thing that the dentist stuffed into the root canal is called a teether tip, and its main ingredient is gum secreted from a tree in Southeast Asia, as well as zinc oxide and barium sulfate, which is a dental filling material without metal components. It will not affect the MRI.

No, the needle will not remain in the root canal. What remains in the root canal is only the root paste, the tip of the teether. It will not affect the MRI. You can rest assured of this!

Hello, it depends on which part you do, if you do the skull, you don't need fasting for the cervical spine, lumbar spine, knee joints, etc., if you do the abdomen, pelvis, you need to fast, and some even need an enema.

Magnetic resonance imaging is also known as magnetic resonance imaging (MRI).

MRI (Magnetic Resonance Imaging), also known as magnetic resonance imaging, is the use of the characteristics of the spin motion of the atomic nucleus, the human body is placed in a special applied magnetic field, the radio frequency pulse excites the hydrogen nucleus in the human body, causing the hydrogen nucleus resonance, and absorbing energy, after stopping the radio frequency pulse, the hydrogen nucleus sends a radio signal according to a specific frequency, and the absorbed energy is released, which is collected by the receiver in vitro, and the image is obtained by electronic computer processing.

MRI is also known as Magnetic Resonance Imaging.

MRI can be used for imaging diagnosis in all systems of the body. Among them, the best effect is the brain, its spinal cord, heart vessels, joints and bones, soft tissues and pelvis. For cardiovascular diseases, it can not only observe the anatomical changes of various chambers, large vessels and valves, but also can be used for ventricular analysis, qualitative and semi-quantitative diagnosis, can make multiple sectional maps, with high spatial resolution, showing the whole picture of the heart and lesions, and their relationship with surrounding structures, which is better than other X-ray imaging, two-dimensional ultrasound, nuclide and CT examinations.

In the diagnosis of cerebrospinal cord lesions, coronal, sagittal and cross-sectional images can be taken.

The main indications for MRI examination are:

1. Nervous system lesions: cerebral infarction, brain tumor, inflammation, degenerative diseases, congenital malformations, trauma, etc., are the earliest human body systems, and the positioning and qualitative diagnosis of lesions are more accurate and timely, and early lesions can be found.

2. Cardiovascular system: It can be used for the diagnosis of heart disease, cardiomyopathy, pericardial tumor, pericardial effusion, wall thrombosis, and intimac stripping.

3. Thoracic lesions: mediastinal masses, lymph nodes and pleural lesions, etc., which can show the relationship between the mass in the lung and the larger trachea and blood vessels.

4. Abdominal organs: diagnosis and differential diagnosis of liver cancer, liver hemangioma and liver cyst, diagnosis and differential diagnosis of intra-abdominal mass, especially retroperitoneal lesions.

5. Pelvic organs; Uterine fibroids, other uterine tumors, ovarian tumors, qualitative localization of pelvic masses, rectal, prostate and bladder masses, etc.

6. Bone and joint: the diagnosis and lesion range of intraosseous infection, tumor and trauma, especially for some subtle changes such as bone contusion, intra-articular cartilage, ligament, meniscus, synovium, synovial sac and other lesions and bone marrow lesions have high diagnostic value.

7. Systemic soft tissue lesions: Tumors, infections, degenerative lesions, etc. of nerves, blood vessels, lymphatic vessels, muscles, connective tissues, etc., can make more accurate positioning and qualitative diagnosis.

The magnetic resonance of the Third Hospital of Beijing Medical University is above, if your ** is very clear, you don't need to do it, provided that your condition is not the kind that changes rapidly, if it is a disease that changes quickly in the brain, you must make one, listen to the doctor.

If the ** taken last time is very clear, there is no need to shoot again.

If you do it half a month ago, if you don't feel that your condition is getting worse, you don't need it anymore, and if you don't, you need to do it again!!