Magnetic resonance imaging is a technique that works by
A) measuring the rate at which brain cells use glucose.
B) constructing a three-dimensional image from X rays.
C) transducing the electrical activity of individual neurons.
D) detecting and interpreting magnetic activity from hydrogen levels in the blood.

Question

Quizplus · Accepted Answer

Magnetic resonance imaging (MRI) works by detecting and interpreting magnetic activity from hydrogen levels in the blood. MRI uses a strong magnetic field and radio waves to create detailed images of the body or brain. Hydrogen atoms in the body align with the magnetic field and emit radio waves when exposed to a second magnetic field. The signals produced by the hydrogen atoms are used to create images of the inside of the body or brain.

Magnetic Resonance Imaging Is a Technique That Works by