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Chapter 3: Problem 15

A(n) ________ uses magnetic fields to create pictures of a given tissue. a. EEG b. MRI c. PET scan d. CT scan

Short Answer

Expert verified
The correct answer is b. MRI.

Step by step solution

01

Options Analysis - EEG

An EEG, or Electroencephalogram, is a test that detects electrical activity in your brain using small, flat metal discs (electrodes) attached to your scalp. EEGs do not use magnetic fields, so this is not the correct answer.
02

Options Analysis - MRI

An MRI, or Magnetic Resonance Imaging, uses a strong magnetic field and radio waves to create detailed images of the organs and tissues within the body. It is called so precisely because it uses magnetic fields, thus this fits the question's requirement.
03

Options Analysis - PET scan

A PET scan, or Positron Emission Tomography scan, uses a special dye containing radioactive tracers, which are either swallowed, inhaled, or injected into a vein in your arm. The tracers get absorbed by organs and tissues, which are then scanned by the machine. No magnetic fields here, so not the correct answer.
04

Options Analysis - CT scan

A CT scan, or Computed Tomography scan, uses a series of X-ray images taken from different angles around your body and uses computer processing to create cross-sectional images (slices) of the bones, blood vessels and soft tissues. No use of magnetic field means it is not the correct option.
05

Select the Correct Answer

After analyzing all the options, the only imaging technique that uses magnetic fields to create pictures of tissues is the MRI.

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