LMRT ARRT EXAM QUESTIONS WITH VERIFIED ANSWERS

LMRT ARRT EXAM QUESTIONS WITH VERIFIED ANSWERS Roentgen discovered x-rays while working with a _____ tube? -Correct Answer-Crookes An "electron cloud" surrounding the filament of the cathode is referred to as a -Correct Answer-Space charge Free electrons of X-ray production come from the -Correct Answer-Filament The creation of the space charge in the X-ray tube produces: -Correct Answer-thermionic emission The majority of photons in the X-ray beam are created by which process? -Correct Answer-Bremsstrahlung interactions More than 99% of the energy of the electron stream is converted into: -Correct Answer-heat the high-speed rotation (10,000 rpm) of the anode enables -Correct Answer-Greater dissipation of heat from high technical factors The degree of angulation of the x-ray tube target will determine the: -Correct Answer-size of the actual and effective focal spot A dual-focus X-ray tube has: 1: Two filaments 2: Two focal spot sizes 3: Two anodes -Correct Answer-1 and 2 The anode heel effect is a phenomenon of X-ray production that results in: -Correct Answer-Uneven distribution of radiation within the x-ray field The penetrating power of the X-ray beam is controlled by varying the -Correct Answer-Peak kilovoltage (kVp) The rate flow of current flow across the X-ray tube is measured in -Correct Answer-mA Doubling the mA will result in 1: increased patient dose 2: twice as many photons in the X-ray beam 3: increased radiographic density -Correct Answer-1, 2, and 3 The unit used to indicate the total quantity of X-ray expose is -Correct Answer-Millionsampere-seconds (mAs) The device for removing long-wavelength radiation from the primary X-ray beam is the -Correct Answer-Filter X-ray equipment capable of producing 70 kVp or more is required to have total filtration of at least: -Correct Answer-2.5 mm Al equiv The purpose of rotating the anode of the X-ray tube is to -Correct Answer-Increase the heat capacity of the anode Image s