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Exposure Unit 1 & 2

QuestionAnswer
The type of ABS circuit where the kVp is set by the operator and the mA varies up and down as needed to maintain image brightness is... variable mA, preset kVp
all of the following are methods to reduce radiation dose except: placing the II beneath the table with the tube on top
the scattering of random light from the output phosphor of the II, caused by both, scattered xrays and scattered electrons, is termed veiling glare
when using magnification mode on the II, the _____ of the electron beam is moved _______ to the phosphor and photocathode focal point, closer
increasing magnification mode ______ spatial resolution and _______ pt dose increases, increases
the ratio increase in kinetic energy from the flow and acceleration of electrons from the input phosphor to the output screen is defined as: flux gain
a single xray photon striking the input phosphor of an II can create _____ of light photons thousands
II was invented in _______ 1940's
the negative charge within the electrostatic lenses of the II tube _______ as it advances towards the anode increases
the input phosphor absorbs xrays and re-emits energy as _____ light
Created by: user-2033286
 

 



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