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Generators and filtration Review
Terms in this set (13)
Why would a self-rectified x-ray unit only produce one-half the exposure of a single-phase x-ray machine
The reversed pulses are blocked from reaching the x-ray tube
A three-phase x-ray machine produces more remnant exposure at the receptor plate both because of increased ________ and increased ________
effective mA, rate of x-ray production
For a high-frequency x-ray machine, what is the average kV as a percentage of the kVp?
If 80 kVp were used in a fixed 3phase x-ray room for an AP chest, what kVp would be indicated for the same procedure using a battery-powered mobile x-ray unit
For digital imaging systems, how is the image contrast affected by switching from a 1 phase x-ray machine to a high-frequency machine
The recommended change in radiographic technique when changing from a one phase x-ray machine to a 3 phase machine is to ________ the _________ to _________ the original
cut, mAs values, half
Protective filtration should only affect the _______ x-ray beam
The glass of the x-ray tube envelope, the oil surrounding it, and the beryllium window are all examples of:
If a 1 mm slab of aluminum filtration were removed from the collimator, what would be the immediate effect upon the subsequent images?
none, only has to effect exposure if excessive filtration is used
What, besides insufficient filtration, could cause the measured HVL for an x-ray machine to be inadequate?
HVL is defined as the amount of absorber required to
reduce the intensity of the beam to precisely one-half the original x-ray output from the tube
The correct total amount of protective filtration is defined as the ________ possible without affecting the _______ exposure at the _______
maximum, final, IR
Give an example of a projection where compensating filters might still be useful, even with the power of digital processing
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