Magnetic Resonance Imaging (MRI)  | UPSC

MRI scanners utilize strong magnetic fields to align protons in bodily tissues, similar to compass needles.

Radio waves then excite these protons, causing them to absorb energy and shift to higher energy levels.

As protons return to their original state, they release radio signals detected by the machine.

Variations in these signals based on tissue type allow for the creation of detailed internal body images.

MRI is a vital diagnostic tool, providing intricate views without harmful radiation unlike X-rays.