It is hard to see inside the human body, but because it is vital for diagnosing certain illnesses, several techniques have been developed and perfected over the last century.
One of these is magnetic resonance imaging, or MRI. The MRI scan uses a strong magnetic field and radio waves to generate images of parts of the body that can’t be seen as well with X-rays, CT scans or ultrasound. It produces detailed cross-sectional images that can be turned into three-dimensional pictures.
It works by using a magnetic field to order the hydrogen atoms in the body’s water molecules and then sends them radio waves from an antenna.
After the interaction, the atoms send the waves back with an intensity that depends on the type of tissue reached. The process then builds up a map of the body tissue.
MRI is painless and