Question

What is the typical magnetic field strength of magnets present in MRI machines used in medical applications?
1. < 0.1 gauss
2. 0.1 to 100 gauss
3. 0.1 to 10 gauss
4. 5000 to 20000 gauss

Answer 1

Correct Answer - Option 4 : 5000 to 20000 gauss

The correct answer is 5000 to 20000 gauss.

• MRI can be also known or called Magnetic Resonance imaging.
• MRI scanners use strong magnetic fields, magnetic field gradients, and radio waves to generate images of the organs in the body.
• MRI does not involve X-rays or the use of ionizing radiation, which distinguishes it from CT or CAT scans and PET scans.
• In MRI the body is placed in a high strength magnetic field.
• Permanent MRI magnets use permanently magnetized iron like a broad bar magnet that has been bent into a C-shape where the two poles are close together and parallel to each other.
• The typical magnetic field strength of magnets present in MRI machines used in medical applications is 5000 to 20000 gauss.