CAMRT Prep Flashcards - Equipment Operation and Quality Control Questions & Answers 100% Correct

What percentage of the total energy used to produce x-rays is actually converted to x-rays? - ACCURATE ANSWER-0.2% When the x-ray tube filament is heated to incandescence/white hot, this is termed ________. - ACCURATE ANSWER-Thermionic emission Heating the x-ray tube filament to incandescence functions to provide a source of ________. - ACCURATE ANSWER-Electrons Which characteristic x-rays of tungsten are the only x-rays that are useful for diagnostic purposes? - ACCURATE ANSWER-K characteristic x-rays What kind of x-rays are emitted when an outer shell electron fills an inner shell vacancy? - ACCURATE ANSWER-Characteristic x-rays What type of x-rays are produced when a high-speed electron is decelerated by the nuclear field of the target atom nucleus? - ACCURATE ANSWER-Bremsstrahlung x-rays How are x-ray energy and x-ray wavelength related? - ACCURATE ANSWER-Inversely, ie, as x-ray energy increases, wavelength decreases What serves to accelerate the electrons toward the anode? - ACCURATE ANSWER-The application of high voltage (kilovoltage) Which device functions to direct the electrons toward the anode's focal spot? - ACCURATE ANSWER-Focussing cup