GXMO EXAM STUDY GUIDE QUESTIONS
AND CORRECT ANSWERS
Artifacts - Answer-an object made by a human being, typically an item of cultural or historical
interest.basic biologi
Atomic Structure - Answer-Electron on outer shell, neutron and proton in center, nuclei.
Attenuation - Answer-Loss of power in a signal as it travels from the sending device to the receiving
device.
reduction in radiation intensity that results from absorption and scattering.
Automatic Exposure Control (AEC) - Answer-An electronic circuit within the x-ray machine that
automatically terminates the exposure time when a predetermined quantity of x-rays has been
detected.
beam quality - Answer-The penetrating power of the x-ray beam
Beam restrictors - Answer-function to limit the size of the irradiated field. In doing so, they limit the
volume of tissue irradiated (thereby decreasing the percentage of scattered radiation generated in the
part) and help reduce patient dose.
, Chemical Safety - Answer-Appears when chemicals used can cause burns or are poisonous if absorbed
through the skin.
xray contrast - Answer-Short scale
Mostly blacks & whites; High visual contrast
̄ kVp Long scale
Many shades of gray; Low visual contrast kVp
contrast resolution - Answer-the ability to differentiate one shade of gray from another
xray beam intensity - Answer-quality and quantity over time and area
xray density - Answer-Affected by: mA, kVp, Exposure time, Distance
xray film - Answer-Double emulsion
-double loweers radiation exposure to produce image
-comes in one film or two
Two is duplicate
Differential attenuation - Answer-The result of differences in transmission of the beam as it passes
through the patient resulting in signal differences to the digital detector
Digital Post-Processing - Answer-changing or enhancing the electronic image for the purpose of
improving its diagnostic quality
display qualities - Answer-window level, window width, resolution, filtering
AND CORRECT ANSWERS
Artifacts - Answer-an object made by a human being, typically an item of cultural or historical
interest.basic biologi
Atomic Structure - Answer-Electron on outer shell, neutron and proton in center, nuclei.
Attenuation - Answer-Loss of power in a signal as it travels from the sending device to the receiving
device.
reduction in radiation intensity that results from absorption and scattering.
Automatic Exposure Control (AEC) - Answer-An electronic circuit within the x-ray machine that
automatically terminates the exposure time when a predetermined quantity of x-rays has been
detected.
beam quality - Answer-The penetrating power of the x-ray beam
Beam restrictors - Answer-function to limit the size of the irradiated field. In doing so, they limit the
volume of tissue irradiated (thereby decreasing the percentage of scattered radiation generated in the
part) and help reduce patient dose.
, Chemical Safety - Answer-Appears when chemicals used can cause burns or are poisonous if absorbed
through the skin.
xray contrast - Answer-Short scale
Mostly blacks & whites; High visual contrast
̄ kVp Long scale
Many shades of gray; Low visual contrast kVp
contrast resolution - Answer-the ability to differentiate one shade of gray from another
xray beam intensity - Answer-quality and quantity over time and area
xray density - Answer-Affected by: mA, kVp, Exposure time, Distance
xray film - Answer-Double emulsion
-double loweers radiation exposure to produce image
-comes in one film or two
Two is duplicate
Differential attenuation - Answer-The result of differences in transmission of the beam as it passes
through the patient resulting in signal differences to the digital detector
Digital Post-Processing - Answer-changing or enhancing the electronic image for the purpose of
improving its diagnostic quality
display qualities - Answer-window level, window width, resolution, filtering
