In a Gamma Camera, How Does the Energy Filter-Called the Pulse

question 5

Multiple Choice

In a gamma camera, how does the energy filter-called the pulse height analyzer-enhance image quality?

• A)It uses several cameras around the source to get a 3-D image.
• B)It shows all the energies of radiation by intensities, so that we can select only the specific gamma energy released by the isotope.
• C)Only the specific gamma radiation released by the isotope is allowed to pass, eliminating all other gamma radiation, such as cosmic rays and radiation of terrestrial origin.
• D)It allows only gamma radiation to pass, and later we select the specific energy released by the isotope.