2016 Med Phys I Lecture 3.1a(2) PreTest Question Title * 1. Name: Question Title * 2. As the energy transfer coefficient increases, the mean energy transferred will ______ Increase Decrease Remain the same Question Title * 3. What attenuation coefficient is best when considering dose? Linear attenuation coefficient Energy transfer coefficient Energy absorption coefficient Electron attenuation coefficient Question Title * 4. With increasing incident photon energies, the ratio of the mass energy absorption coefficient to the mass energy transfer coefficient ________ due to _______ Bremsstrahlung production: increases; increased; increases; decreased; decreases; increased; decreases; decreased; Question Title * 5. For photon interactions, which is NOT a way in which energy may be distributed Some energy may be transferred to kinetic energy of electrons Some energy may be scattered as photons Some energy may be transferred to linear polarization Some energy may be reradiated. Question Title * 6. Barium is used in diagnostic imaging to improve contrast because: The K edge is just below the energy of the diagnostic beam The K edge is just above the energy of the diagnostic beam The density difference allows more transmission of the beam Question Title * 7. Are there any issues that are not clear to you at this time? Done