Final answer:
MRI is the imaging technique that uses strong magnetic fields to produce cross-sectional images of internal tissues and organs.
Step-by-step explanation:
The imaging technique you are referring to is magnetic resonance imaging (MRI).
MRI is a medical imaging technique that uses strong magnetic fields to produce detailed cross-sectional images of internal tissues and organs.
By applying a magnetic field, the nuclei of certain atoms, such as hydrogen nuclei (protons), align in a specific way. When radio waves are then broadcast and absorbed by these aligned nuclei, they reemit the energy in a way that can be detected and used to create images.