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Ch. 5 Pt. 2 Flash Cd

RAD 113

QuestionAnswer
Roentgen discovered x-rays while working with a_______tube: Crookes
An "electron cloud" surrounding the filament of the cathode is referred to as a: space charge
Free electrons for x-ray production come from the: filament
The creation of the space charge in the x-ray tube produces: Thermionic Emission
The majority of photons in the x-ray beam are created by which process? Bremsstrahlung interactions
More than 99% of the electron stream is converted into: heat
The high-speed rotation of the anode enables: greater dissipation of heat from high technical factors
The degree of angulation of the x-ray tube target will determine the: size of the actual and effective focal spot
A dual-focus x-ray tube has: two-filaments and two focal spot sizes
The anode heel effect is a phenomenon of x-ray production that results in: uneven distribution of radiation within the x-ray field
To take advantage of the anode heel effect when making a radiograph of the femur in recumbent anteroposterior projection on 35x43 cm image receptor at a 40 inch SID the patient should be placed so that the: head is toward the cathode end of the tube
The penetrating power of the x-ray beam is controlled by varying the: kVp
The rate of current flow across the x-ray tube is measured in: milliamperes
Doubling the mA will result in: increased patient dose, twice as many photons in the x-ray beam, increased radiographic density.
The unit used to indicate the total quantity of x-ray exposure is: milliampere-seconds
An x-ray exposure is made using the following factors: 200 mA, 0.02 seconds, 70 kVp, 40 inches SID. The value for the mAs for this exposure is: 4
The device for removing long wavelength radiation from the primary x-ray beam is the: filter
X-ray equipment capable of producing 70 kVp or more is required to have total filtration of at least: 2.5 mm Al equiv
The purpose of the rotating anode of the x-ray tube is to: Increase the heat capacity of the anode
Image sharpness is determined by the: Size of the effective focal spot
Created by: josie.atwood83
 

 



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