Which of the following statements regarding intensifying screens is correct?
A) The larger the crystal size, the more radiation required to produce an image.
B) The thicker the emulsion, the faster the speed of the screen.
C) Larger crystals produce an image with greater resolution than smaller crystals.
D) Calcium tungstate crystals produce a latent image with less radiation exposure than rare earth screens.
B
Explanation: A) The thicker the emulsion, the faster the screen speed, requiring less radiation to produce an image. However, thicker emulsion is more likely to produce a less sharp image.
B) The thicker the emulsion, the faster the screen speed, requiring less radiation to produce an image. However, thicker emulsion is more likely to produce a less sharp image.
C) The thicker the emulsion, the faster the screen speed, requiring less radiation to produce an image. However, thicker emulsion is more likely to produce a less sharp image.
D) The thicker the emulsion, the faster the screen speed, requiring less radiation to produce an image. However, thicker emulsion is more likely to produce a less sharp image.
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A) 0.04 seconds B) 0.08 seconds C) 0.12 seconds D) 0.20 seconds
In order to maintain adequate perfusion to the vital organs of the body a mean arterial pressure (MAP) of 60 mmHg must be maintained. MAP is a calculation of average blood pressure using systolic and diastolic blood pressure measurements. MAP is calculated as follows:
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The dental dam often reduces the procedure time by providing an isolated treatment area in the oral cavity
a. True b. False Indicate whether the statement is true or false
Which of the following statements regarding mounting and orientation of radiographs is correct?
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