What is the difference between an MRI and a fMRI?
A) fMRI scans rely only on changes in glucose, not hemoglobin.
B) MRI scans use X rays.
C) fMRI scans rely on changes in hemoglobin, using the BOLD signal.
D) MRI scans use a radioisotype while fMRI scans do not.

Question

Quizplus · Accepted Answer

The main difference between an MRI and fMRI is that fMRI scans rely on changes in hemoglobin, using the BOLD (blood oxygen level dependent) signal, while MRI scans do not. MRI scans use radiofrequency waves and a strong magnetic field to create detailed images of the body's soft tissues and organs, while fMRI is a specialized MRI technique that measures changes in blood flow and oxygenation in the brain to monitor brain activity. fMRI does not use X rays, and while glucose metabolism plays a role in brain function, it is not the primary mechanism that fMRI scans rely on. There is no use of radioisotopes in fMRI.

What Is the Difference Between an MRI and a FMRI