Which of the following statements is/are correct regarding Magnetic Resonance Imaging (MRI)? 1. Magnetic field inside our bodies is similar and equal in magnitude to that of earth. 2. Heat generated by our body parts can be traced by an electromagnetic field. Select the correct answer using the code given below.

Which of the following statements is/are correct regarding Magnetic Resonance Imaging (MRI)? 1. Magnetic field inside our bodies is similar and equal in magnitude to that of earth. 2. Heat generated by our body parts can be traced by an electromagnetic field. Select the correct answer using the code given below. Correct Answer Neither 1 nor 2

The correct answer is Neither 1 nor 2.

Important Points

Magnetic Resonance Imaging (MRI):

• The magnetic field inside the body forms the basis of obtaining the images of different body parts. This is done using a technique called Magnetic Resonance Imaging (MRI).
• But, these fields are very weak and are about one-billionth of the earth's magnetic field. So, statement 1 is NOT correct.
• MRI is not based on tracing heat patterns. So, statement 2 is NOT correct.

Additional Information

• An electric current always produces a magnetic field.
• Even weak ion currents that travel along the nerve cells in our body produce magnetic fields.
• When we touch something, our nerves carry an electric impulse to the muscles we need to use.
• This impulse produces a temporary magnetic field.
• Analysis of these images helps in medical diagnosis.
• Thus, Magnetism has got important uses in medicine.
• The 'danger' signal lights are red in color. The red is least scattered by fog or smoke. Therefore, it can be seen in the same color at a distance.