Match the following choices with the correct question as they relate to radiographic grids.
a. grid frequency
b. grid ratio
c. contrast improvement factor
d. focussed grid
e. air-gap technique
f. Moire effect
g. grid cut-off
h. convergence point
i. Hollis Potter
j. Gustav Bucky
1. undesirable absorption of clinically useful radiation
2. increased OID
3. Higher value improves contrast.
4. undesirable, superimposed lines on CR image
1. g. grid cut-off
2. e. air-gap technique
3. b. grid ratio
4. f. Moire effect
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The operating console
generates the x-rays used in the exposure of dental radiographs. controls the position indicating device. is the control unit, which works to manage the currents, voltage, and timer. controls the deadman switch in exposure of x-rays.
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