Newest Actual Exam With Complete Questions
And Correct Detailed Answers (Verified Answers)
|Already Graded A+
Define attenuation - answer-:;reduction inthe number of photons as the beam passes through the
patient
Which photon-tissue interaction creates fog? - answer-:;compton scatter
Are coherent interactions part of diagnostic imaging? - answer-:;no
Which photon-tissue interaction is responsible for contrast? - answer-:;photoelectric
The following clues most closely align with what?
- short SID
- large FOV
- homogenous body part
- changes in beam intensity - answer-:;anode heel effect
Changes in intensity can vary by as much as what %? - answer-:;45%
Which should be smaller, actual or effective focal spot? - answer-:;effective
The protective housing of an x-ray tube increases what type of filtration? - answer-:;inherent
, What happens if the glass envelope cracks? - answer-:;vacuum ruined
What will increase the average energy of the x-ray beam? - answer-:;increasing kVp & filtration
What makes up inherent filtration? - answer-:;housing, oil, & envelope
What makes up added filtration? - answer-:;added aluminum sheets & collimator mirror
What is the beam's path through filtration? - answer-:;window of glass envelope, dielectric oil,
protective housing, aluminum sheets, & collimator mirror
Electric potential or potential difference is measured in what? - answer-:;volts
The ohm is the unit for what? - answer-:;resistance
The amp is the unit for what? - answer-:;current
Do transformers have any moving parts? - answer-:;no
What is moving in an x-ray circuit? - answer-:;magnetic fields
To eject a k-shell electron from a tungsten atom, the incoming photon must have an energy of at least
____ keV. - answer-:;69.5
69.5 is the binding energy of what? - answer-:;k-shell electron of tungsten
Below 70 kVp, what % of the beam is characteristic? - answer-:;0%