The technique that uses blood-oxygenated-level-dependent (BOLD) signals to measure the ratio of oxygenated to deoxygenated blood in the brain is the __________.
A) CT scan
B) fMRI
C) PET scan
D) MRI

Question

Quizplus · Accepted Answer

BOLD signals are specifically used in functional magnetic resonance imaging (fMRI) to detect changes in the oxygenation level of blood in different regions of the brain. CT scans and PET scans do not use BOLD signals, and while MRI uses similar technology, it does not rely on BOLD signals for functional imaging.

The Technique That Uses Blood-Oxygenated-Level-Dependent (BOLD) Signals to Measure the Ratio