What is Magnetic Resonance Imaging?

Posted by UKHealthScans on February 4th, 2021

Magnetic Resonance Imaging (MRI) is one of the basic, modern and very safe methods of non-invasive imaging diagnostics.

It uses radio frequency electromagnetic radiation. Radio waves from a large electromagnet act on the patient's body causing a change in the magnetization of the protons in the hydrogen nuclei. After the electromagnet has finished its operation, the protons return to their previous state, sending out electromagnetic waves which are read by the device. These signals vary from tissue to tissue, which is then converted into medical images by a computer program.

The operation of the camera allows for the imaging of all tissues of the body at the same time, especially those that are covered with bones or located behind them. In addition, magnetic resonance imaging allows you to study the functions of specific areas of the body, monitor the course of the treatment process and track the course of the disease. MRI can locate neoplastic or inflammatory lesions, estimate their size and position, and mark the area of ​​planned surgery. Diagnostics with the use of magnetic resonance imaging is painless and safe.

When should an MRI be performed?

The indications for an MRI scan are:

Nervous system and brain disorders: suspected cancer, Alzheimer's disease, the need to assess post-stroke lesions, unexplained neurological disorders,

Diseases of the musculoskeletal system: degeneration, inflammation and defects of the spine, joints, cartilage and tendons, the need to assess the function and structure of the spine after operations, injuries and the need to assess the viability and condition of the transplanted cartilage, suspicion of multiple sclerosis,

Cardiovascular diseases: problems with venous flow, suspicion of blood clots and aneurysms and their complications, the need to designate places in the arteries where stents are to be placed and the need to evaluate the effects of cardiac surgery procedures,

Diseases of muscles and soft tissues: pathologies of the liver, bile ducts and other abdominal organs, suspicion of uterine fibroids, changes in the kidneys and breasts,

Suspicion of fetal birth defects or placental abnormalities,

Suspicion of prostate cancer,

Radiation changes in the body.

How does the MRI work?

The examination begins with a medical interview, then the final decision is made to perform MRI with or without contrast medium.

Contrast is administered intravenously - during the test.

During the examination, the patient is placed in an electromagnetic tunnel, constantly in contact with medical staff through a camera and microphone. During the test, it must remain motionless for several to several dozen minutes. - depending on the studied area. During this time, photos are taken, and the operation of the device is evidenced by a characteristic "knocking" similar to the sounds made by the washing machine impeller. During the examination, the patient receives stopwatches or headphones for comfort and hearing protection.

Is magnetic resonance imaging safe?

Diagnostics with the use of magnetic resonance imaging is painless and safe. It should be emphasized that this imaging method does not use X-rays, therefore this examination does not require such safety measures as X-ray examinations or computed tomography. MRI examination does not burden the patient's body, does not interfere with the medications taken, and does not affect the patient's well-being and behavior. After the MRI scan is completed, the patient can drive the car on his own.

How to prepare for an MRI?

You should come 15 minutes before the scheduled examination in order to register and complete the medical questionnaire.

You must bring a photo ID with you to prove your identity.

Provide medical records (photos, CDs, descriptions, information sheets, cytological or histopathological results)