RHS 116 Exam Study Guide Questions With 100% Correct Answers
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Course
RHS
Institution
RHS
What is the most common error with endo film? - ️️Apicies not present
What are long wavelengths or soft radiation? - ️️Low frequency, low energy, and low penetrating power
What are short wavelengths or hard radiation? - ️️High frequency, high energy, and high penetrating power.
What ...
What is the most common error with endo film? - ✔ ✔ Apicies not
present
What are long wavelengths or soft radiation? - ✔ ✔ Low frequency,
low energy, and low penetrating power
What are short wavelengths or hard radiation? - ✔ ✔ High
frequency, high energy, and high penetrating power.
What are the advantages of Digital Imaging? - ✔ ✔ No film or
processing solution, less exposure to the patient
What can affect density? - ✔ ✔ Several factors can affect density
including;
-The distance of the X-ray tube to the patient
-patients tissue thickness
-and the amount of radiation reaching the film.
What chemical in the fixer that clears the unexposed silver halide
crystals? - ✔ ✔ Ammonium Thiosulfate
What controls density? - ✔ ✔ density is controlled by mA,
developing techniques, kV, & light leak
What determines the speed of film? - ✔ ✔ size of silver halide
crystals
What does Milliamperage affect? - ✔ ✔ Milliamperage affects the
film density or the overall darkness of an image
, What is the primary diagnostic use of a bitewing radiograph? - ✔ ✔
Check for interproximal decay and crestal bone levels
What is the primary use of occlusal dental radiographs? - ✔ ✔
Locate foreign bodies
What is the range of kVp for dental units? - ✔ ✔ 70kVp to 90kVp
What is the recommended size of the lead collimator? - ✔ ✔ 2.75
inches
What is the required aluminum filter thickness for units below 70kVp? -
✔ ✔ 1.5 mm
What is the required thickness for units over 70 kVp? - ✔ ✔ 2.5mm
What is the transfer of energy as it passes through matter called? - ✔
✔ Absorption
What material is the collimator made of? - ✔ ✔ Lead
What primary influence does kVp have? - ✔ ✔ kVp influences the
image contrast the most
What range of mA do dental units use? - ✔ ✔ 10-15 mA
Newer units can be set at 7 mA for all x-rays
What term describes the loss of electrons from a substance? - ✔ ✔
Ionization
Depth of contrast comes from what? - ✔ ✔ kVp
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