Question

Two of the body parts which do not appear in MRI are may be

• A. Molar teeth and eye lens
• B. Scapula and canines
• C. Ligaments and ribs
• D. All of the above

Answer 1

Answer: (B)

Scapula and canines

MRI or Magnetic resonance Imaging is used for medical diagnosis without exposing body to radiation. In MRI hydrogen atoms are used to generate detectable radio frequency signals that are received by detectors in close proximity of body parts to be examined. Human body is made up 80% of water which contain hydrogen atoms. The body parts which contain less or no water are not seen properly on MRI. Scapula and canines have more osteogenic tissue and less water.

Option B is correct.