How does magnetic resonance imaging (MRI) affect the body?

This is an automatically translated article.

The article is professionally consulted by Dr., Dr. Tran Nhu Tu - Dean and Master, Doctor Nguyen Van Huong - Department of Diagnostic Imaging - Vinmec Danang International Hospital


Magnetic resonance is a modern imaging method with much higher accuracy than other methods, so many people wonder if magnetic resonance imaging has any effect on the body or not. are not?

1. What is magnetic resonance imaging?

Magnetic resonance imaging is a modern imaging method that does not use X-rays, but uses a magnetic field and radio waves to create images, based on the Hydrogen atoms that are abundant in the body. Magnetic resonance imaging method gives very accurate images for diagnosis and gives highly accurate results. At present, large hospitals often use MRI method to examine most of the organs of the human body, especially used for detailed imaging of the nerves or detailed images of the brain.
Because MRI brings high quality and high-resolution images with good contrast, it can provide maximum support for doctors in the process of evaluating lesions, in order to make the most accurate diagnosis. This technique is used in many cases because it has better image quality than X-ray, ultrasound, and CT scan.
MRI will help find abnormalities behind bone layers that are difficult to find with other imaging techniques. Not only that, during the MRI scan does not cause some side effects like in CT scans or X-rays.

2. What effect does magnetic resonance imaging (MRI) have on the body?

Magnetic resonance imaging is a method that does not use X-rays and is harmless to the patient, has high safety, does not have the side effects of other imaging methods such as X-rays, CT scans. Accordingly, in order for the magnetic resonance imaging process to take place safely, when you are asked to take an MRI by your doctor, you should do a few things:
Follow the instructions of the doctor at the MRI room. According to research, it has not been found that the harmful effects of the magnetic field emitted by the machine to human health. However, the machine's high magnetic field can attract metal devices implanted in the human body, or metal jewelry worn on the patient, or cause some devices to stop working. endanger the patient's life. Therefore, the patient needs to inform the staff of the imaging room if any: put a pacemaker, use a hearing aid, use an artificial heart valve... so that the doctor can give the best solution. In addition, do not bring metal jewelry, mobile phones, watches, computers... into the MRI room. The patient will be asked to lie still, not moving during the MRI scan to provide the best image quality. In cases where the patient needs to be injected with magnetic contrast medicine, the doctor will ask the patient about the history of kidney disease, history of drug allergy to guide the signing of the consent form before performing the MRI. Contrast drugs pose little danger to humans, but they can cause allergic reactions in some cases, with manifestations such as headache, dizziness, nausea, numbness in the limbs, itchy rash. Renal systemic fibrosis is a late complication, which can be seen in patients with renal failure or using contrast agents from the older generation; This adverse event is very rare if the safety of the use of contrast agents is strictly followed.

3. Advantages of MRI

The images that resonance imaging brings have high resolution, images of body parts are shown in sharp and detailed, so it can be applied to diagnose most diseases, For example:
Diseases related to the brain such as brain tumor, cerebrovascular accident, cranial nerve tumor, degenerative brain diseases, congenital malformations of the brain, epilepsy, autism, trauma traumatic brain injury with inadequate clinical explanation on CT... Aneurysms, cerebral arteriovenous malformations and peripheral blood vessels Some diseases of bone and joint damage: spondylolisthesis, disc herniation , myeloma, bone tumor, joint infection, birth defects... Patients with soft tissue damage such as spinal cord meniscus, ligaments, sports injuries... related to liver, pancreas, bile ... Gynecological diseases (uterine cancer, ovarian tumor, ovarian cancer...genital prolapse), Enlargement or prostate cancer Cancers or screening cancer (systemic MRI) Rolling plexus disease h hand

MRI technique can contribute to early detection of many dangerous diseases, so it is highly appreciated by expert doctors, this technique has outstanding advantages such as:
Does not use X-rays or rays Ion radiation, harmful to the health of the patient. Brings more survey indications and is more accurate than other diagnostic techniques. The image has the ability to reproduce sharp 3D, providing high sharpness. Accurately assess cerebral perfusion status, diagnose vascular abnormalities without using contrast agents. Able to assess the condition of very small lesions in the body such as blood vessels, nerves...

Prolapse of pelvic organs needs to be examined by gynecologists and urologists for early assessment and detection, the treatment effectiveness will be high, if left too long, the possibility of surgery will be required to improve the disease. sag of the pelvic organs lags a high technique that requires the camera to have a high magnetic field, at a very fast speed. With the 3 Tesla MRI machine of Vinmec system, the prolapse of pelvic viscera is done very quickly and accurately.
With silent technology, no noise in neurological examinations, the MRI machine at Vinmec General Hospital has overcome the discomfort caused by noise during MRI, with new technology and many high-end pulse sequences for images. of outstanding quality.
With a team of experienced doctors, technicians, professional service, safety and high efficiency. To ensure the most accurate and safe MRI results, go to reputable medical facilities to perform magnetic resonance imaging (MRI).

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