How does MRI works?

Magnetic resonance imaging (MRI) is a medical imaging technique that uses magnetic fields and radio waves to create detailed images of the inside of the body. Here's a simplified explanation of how MRI works:

1. Magnetic Field: A powerful magnet generates a strong magnetic field inside the MRI scanner. This magnetic field causes the protons in the body's water molecules to align with the magnetic field.

2. Radiofrequency (RF) Pulses: Short bursts of radiofrequency (RF) waves are then emitted into the body from the MRI scanner. These RF pulses disrupt the alignment of the protons, causing them to "flip" and align against the magnetic field.

3. Signal Reception: After the RF pulses are turned off, the protons realign with the magnetic field and release energy in the form of radiofrequency signals. These signals are received by the MRI scanner.

4. Computer Processing: The received signals are processed by a computer, which converts them into 3D images that show the differences in proton density and relaxation times within the body.

5. Contrast Agents: To enhance the visibility of certain tissues or blood vessels, contrast agents may be injected into the body. These contrast agents alter the magnetic properties of tissues, making them appear brighter or darker on the MRI images.

In summary, MRI uses magnetic fields and radiofrequency waves to generate detailed cross-sectional images of the body, allowing doctors to diagnose and monitor a wide range of medical conditions.

Magnetic Therapy - Related Articles