Magnetic resonance imaging is a technique that works by
A) measuring the rate at which brain cells use glucose.
B) constructing a 3-dimensional image from X rays.
C) transducing the electrical activity of individual neurons.
D) detecting and interpreting magnetic activity from atomic nuclei.

Question

Quizplus · Accepted Answer

Magnetic resonance imaging (MRI) detects and interprets magnetic activity from atomic nuclei, specifically hydrogen atoms in water molecules. By manipulating these nuclei with strong magnetic fields and radio waves, MRI scans can produce detailed images of internal structures in the body, including the brain. MRI does not measure glucose metabolism or electrical activity like other neuroimaging techniques such as positron emission tomography (PET) or electroencephalography (EEG). And while X rays can produce 3-dimensional images, they do so by passing through the body, which can expose the patient to harmful radiation. MRI does not use radiation and is generally considered a safer imaging option.

Magnetic Resonance Imaging Is a Technique That Works by