RADT 415 Final Exam Questions with Correct Answers

The production of heat at the anode is directly proportional to _______ Correct Answer tube current Approximately _____ of the kinetic energy of the projectile electrons is converted to x-rays at the target Correct Answer 1% The _____ of an x-ray beam is higher when the peak of the emission spectrum is further to the _____. Correct Answer quality, right X-ray quantity increases in direct proportion to increases in _____. Correct Answer mas If a photon interacts with matter and scatters, the photon Correct Answer exists with less energy Most of the heat generated at the target is due to _____. Correct Answer outer-shell excitation The HVL is lowered by a decrease in _____. Correct Answer kvp If the quantity of electrons hitting the target are doubled, the x-ray quantity is _____. Correct Answer increased by a factor or two The useful characteristic x-rays from tungsten targets are _____-shell x-rays Correct Answer K Changes in _____ result in directly proportional changes in the amplitude of the emission spectrum. Correct Answer ma and time Beam quality is affected by _____. Correct Answer kvp and filtration As the electron shells move farther from the nucleus, total electron energies _____ and binding energies _____. Correct Answer increase, decrease Characteristic x-rays are produced by _____. Correct Answer released binding energy During coherent scattering, the scattered photon possesses _____ as the incident photon. Correct Answer the same energy, frequency and wavelength When x-ray photons interact with matter and change direction, the process is called _____. Correct Answer scatter If an exposure is 0.5 mgy at an SID of 40 inches, what would be the exposure at an SID of 60 inches? Correct Answer 0.222 mgy