MRI machines are enormous, tube-shaped magnets. When a person lies inside the hollow drum-like structure, the magnetic field realigns the water molecules in your body. Our body has water molecules, and the radio waves in the MRI machine make the aligned atoms produce faint signals. The signals are then used to create cross-sectional images; the pictures formed look like slices in a loaf of bread.

The cost of MRI scan depends on the consumables, time taken, and the number of films utilized.