What is an MRI scan and how does it work?
MRI, which stands for Magnetic Resonance Imaging, is a non-invasive medical imaging technique that uses strong magnetic fields and radio waves to create detailed images of the body’s internal structures. Unlike traditional X-rays, MRI scans do not use ionizing radiation, making them a safer option for patients.
The MRI machine is a large, cylindrical device that the patient lies inside during the scan. The machine generates a strong magnetic field, which aligns the hydrogen protons in the body’s tissues. Radio waves are then sent into the body, causing the protons to absorb and release energy. The machine detects these energy changes and translates them into detailed, cross-sectional images of the body.
MRI scans can provide high-resolution, three-dimensional images of organs, muscles, tendons, and other soft tissues, allowing healthcare professionals to diagnose and monitor a wide range of medical conditions. The images can also be used to guide surgical procedures and monitor the progress of treatment.
Some of the advantages of MRI are:
- Earlier detection of disease or injury, making earlier treatment possible
- No exposure to X-rays or radioactive substances
- It is painless, accurate, quick and safe
- Takes about 15 to 30 minutes per session
- No known side effects
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