GXMO Ohio Review info Questions and
Answers
Contrast - Answer-The difference between any two adjacent portions of the image
Attenuation - Answer-Absorption of the X-ray beam by matter
Scatter radiation - Answer-Part of the X-ray beam that scatters in opposite direction, from the patient.
Has less energy than primary beam. Not easily controlled
Detent - Answer-Special mechanism that stops the X-ray tube in a specific location.
Trendelenburgs position - Answer-Flat on back with head lower 15 degrees
Grid - Answer-Device that absorbs most of the scatter radiation coming off pt, preventing it from
reaching IR. Increases pt exposure.
Floating tabletop - Answer-Allows the top of X-ray table to move independently, which makes it easier
to align body part
, Bucky - Answer-Grid and pull out tray to hold the IR plate and center it to Central ray
Stationary grid - Answer-Grid that does not move during exposure
When to use a grid? - Answer-10-12 cm or more in thickness or when kVp greater than 60
Upright cassette holder *UPRIGHT BUCKY* - Answer-Hold IR in upright position. Mounted on wall and
able to be adjusted for height at 40 or 72 SID
Control console *panel* - Answer-Where the limited operator sets exposure factors and Initiates the
exposure
Transformer cabinet - Answer-Used to produce high voltage required for X-ray production
Fundamental rad safety - Answer-The potential hazard is greater for the limited operator than the pt
because the limited operator is in frequent daily contact
Sources of radiation - Answer-X-ray tube and any matter that is in the path of the X-ray beam
Principle source of scatter? - Answer-The patient
Should the limited be involved in holding patients? - Answer-No never. Immobilization devices or the
patients family if need be
What should the GXMO do before making an exposure? - Answer-Perform a safety check. Make sure the
X-ray door is closed. No one in X-ray room. Your completely behind Barrier. No other IRs in the exposure
area.
Answers
Contrast - Answer-The difference between any two adjacent portions of the image
Attenuation - Answer-Absorption of the X-ray beam by matter
Scatter radiation - Answer-Part of the X-ray beam that scatters in opposite direction, from the patient.
Has less energy than primary beam. Not easily controlled
Detent - Answer-Special mechanism that stops the X-ray tube in a specific location.
Trendelenburgs position - Answer-Flat on back with head lower 15 degrees
Grid - Answer-Device that absorbs most of the scatter radiation coming off pt, preventing it from
reaching IR. Increases pt exposure.
Floating tabletop - Answer-Allows the top of X-ray table to move independently, which makes it easier
to align body part
, Bucky - Answer-Grid and pull out tray to hold the IR plate and center it to Central ray
Stationary grid - Answer-Grid that does not move during exposure
When to use a grid? - Answer-10-12 cm or more in thickness or when kVp greater than 60
Upright cassette holder *UPRIGHT BUCKY* - Answer-Hold IR in upright position. Mounted on wall and
able to be adjusted for height at 40 or 72 SID
Control console *panel* - Answer-Where the limited operator sets exposure factors and Initiates the
exposure
Transformer cabinet - Answer-Used to produce high voltage required for X-ray production
Fundamental rad safety - Answer-The potential hazard is greater for the limited operator than the pt
because the limited operator is in frequent daily contact
Sources of radiation - Answer-X-ray tube and any matter that is in the path of the X-ray beam
Principle source of scatter? - Answer-The patient
Should the limited be involved in holding patients? - Answer-No never. Immobilization devices or the
patients family if need be
What should the GXMO do before making an exposure? - Answer-Perform a safety check. Make sure the
X-ray door is closed. No one in X-ray room. Your completely behind Barrier. No other IRs in the exposure
area.
