What is MRI?

Question

Question

This question was previously asked in

UPPSC Civil Service 2012 Official Paper 1

Answer 1

The correct answer is Magnetic Resonance Imaging.

Key Points

Magnetic resonance imaging (MRI) is a test that uses powerful magnets, radio waves, and a computer to make detailed pictures of organs and tissues within the body.
MRIs employ powerful magnets which produce a strong magnetic field that forces protons in the body to align with that field.
When a radiofrequency current is then pulsed through the patient, the protons are stimulated, and spin out of equilibrium, straining against the pull of the magnetic field.
MRI can be used to detect brain tumors, traumatic brain injury, developmental anomalies, multiple sclerosis, stroke, dementia, infection, and the causes of headaches.

INSTRUMENT	USE
Endoscope	To look inside the gastrointestinal tract, used mainly in surgery or by surgical consultants.
Sphygmomanometer	To measure the human's blood pressure.
Stethoscope	To hear sounds from movements within the body like heartbeats, intestinal movement, breath sounds, etc.
Tuning fork	To test for deafness and to categorize it.
Electrocardiogram (ECG)	To check the human heart's rhythm and detect the electrical signals produced by the heart each time it beats.
Computerized tomography (CT) scan	Uses computers and rotating X-ray machines to create cross-sectional images of the body including the soft tissues, blood vessels, and bones in various parts of the body.
AST (Aspartate transaminase) and ALT (Alanine transaminase)	Abnormality of the liver test.