Functional magnetic resonance imaging (fMRI) is a brain imaging technique used to measure metabolic changes in brain activity. It is an important diagnostic tool for assessing strokes, trauma, degenerative diseases (i.e. multiple sclerosis) and other problems with brain functioning.
Uses
FMRIs are used for studying brain anatomy, locating specific areas of damage, assessing progression of degenerative diseases, monitoring tumor growth and in collaboration with other methods for diagnosing conditions.
Benefits
There are many benefits for using fMRIs as compared to similar diagnostic tests. For example, fMRIs do not use ionizing radiation, provide data on structure and function and clearly show abnormalities in structural and functional anatomy.
Risks
Although an fMRI is a rather noninvasive medical test, patients may experience some complications, including allergic reaction to contract dye (if used), feelings of claustrophobia when in the fMRI machine and interference with medical implants.
Common Complaints
FMRI machines are noisy. Headphones or earplugs are typically used to help combat the noise. If contrast dye is injected, the needle may cause bruising or discomfort, and the contrast dye may cause nausea.
Alternatives
Other forms of testing are available, including CAT scans, PET scans and EEGs. Each has its own benefits, risks and uses, and may be more appropriate for diagnostic assessment for specific conditions.
Tags: degenerative diseases
