GXMO OHIO COMPREHENSIVE EXAM
SCRIPT QUESTIONS AND SOLUTIONS 2026
◉ 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?
SCRIPT QUESTIONS AND SOLUTIONS 2026
◉ 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?
