General X-ray Machine Operator Exam
Guide questions with answers
collimator definition - 🔸🔶CORRECT ANSWERS ✔✔A box-like device
attached under the tube housing that allows the limited operator to vary the
size of the radiation field (a variable aperature)
detent - 🔸🔶CORRECT ANSWERS ✔✔A mechanism that tends to stop a
moving part in a specific location
computed radiography (CR) - 🔸🔶CORRECT ANSWERS ✔✔Sometimes
called "filmless systems" which produce images via a digital format using
computer technology, eliminating the need for darkrooms
image receptor system (IR) - 🔸🔶CORRECT ANSWERS ✔✔Consists of the
X-ray film and the film holder, also known as a cassette
central ray - 🔸🔶CORRECT ANSWERS ✔✔A line in the center of the X-ray
beam and perpendicular to the long axis of the X-ray tube
attenuation - 🔸🔶CORRECT ANSWERS ✔✔the absorption of x-ray beam by
matter
control booth - 🔸🔶CORRECT ANSWERS ✔✔The portion of the X-ray room
that is protected from scatter radiation and safe during exposures
,grid or bucky - 🔸🔶CORRECT ANSWERS ✔✔A device to protect the film
from being fogged by scatter radiation
remnant (exit) radiation - 🔸🔶CORRECT ANSWERS ✔✔the resulting beam
that exits from the patient and creates image
tube port - 🔸🔶CORRECT ANSWERS ✔✔An opening in the X-ray tube
where X-rays that are traveling in a useful direction exit
scatter radiation - 🔸🔶CORRECT ANSWERS ✔✔photons that interact with
the body's matter and travel in a different direction
primary radiation - 🔸🔶CORRECT ANSWERS ✔✔The X-ray beam that
leaves the tube and is unattenuated, except by air
longitudinal - 🔸🔶CORRECT ANSWERS ✔✔Tube motion along the long
axis of the table
transverse - 🔸🔶CORRECT ANSWERS ✔✔Tube motion across the table, at
right angles to longitudinal
vertical - 🔸🔶CORRECT ANSWERS ✔✔Tube motion up and down,
increasing or decreasing the distance between the tube and the table
, Angle (tilt, roll) - 🔸🔶CORRECT ANSWERS ✔✔Permits angulation of the
tube along the longitudinal axis of the table
Rotation - 🔸🔶CORRECT ANSWERS ✔✔Allows the entire tube stand to turn
on its axis
X-Ray tube - 🔸🔶CORRECT ANSWERS ✔✔the source of x-rays
phosphor material - 🔸🔶CORRECT ANSWERS ✔✔Used in a closed cassette
rather than on film to obtain computed radiography (CR) images
ceiling support system - 🔸🔶CORRECT ANSWERS ✔✔most common, has 2
sets of rails that allow for lateral and longitudinal movement, lock and raise
and lower to obtain the correct distances
floor to ceiling support system - 🔸🔶CORRECT ANSWERS ✔✔Has a single
column with rollers at each end, one attached to the ceiling-mounted rail and
the other attached to a floor-mounted rail
What are the three parts of the external part of the x-ray tube? -
🔸🔶CORRECT ANSWERS ✔✔support structure, protective housing, and
glass or metal enclosure
What are the internal parts of the x-ray tube? - 🔸🔶CORRECT ANSWERS
✔✔cathode and anode
Guide questions with answers
collimator definition - 🔸🔶CORRECT ANSWERS ✔✔A box-like device
attached under the tube housing that allows the limited operator to vary the
size of the radiation field (a variable aperature)
detent - 🔸🔶CORRECT ANSWERS ✔✔A mechanism that tends to stop a
moving part in a specific location
computed radiography (CR) - 🔸🔶CORRECT ANSWERS ✔✔Sometimes
called "filmless systems" which produce images via a digital format using
computer technology, eliminating the need for darkrooms
image receptor system (IR) - 🔸🔶CORRECT ANSWERS ✔✔Consists of the
X-ray film and the film holder, also known as a cassette
central ray - 🔸🔶CORRECT ANSWERS ✔✔A line in the center of the X-ray
beam and perpendicular to the long axis of the X-ray tube
attenuation - 🔸🔶CORRECT ANSWERS ✔✔the absorption of x-ray beam by
matter
control booth - 🔸🔶CORRECT ANSWERS ✔✔The portion of the X-ray room
that is protected from scatter radiation and safe during exposures
,grid or bucky - 🔸🔶CORRECT ANSWERS ✔✔A device to protect the film
from being fogged by scatter radiation
remnant (exit) radiation - 🔸🔶CORRECT ANSWERS ✔✔the resulting beam
that exits from the patient and creates image
tube port - 🔸🔶CORRECT ANSWERS ✔✔An opening in the X-ray tube
where X-rays that are traveling in a useful direction exit
scatter radiation - 🔸🔶CORRECT ANSWERS ✔✔photons that interact with
the body's matter and travel in a different direction
primary radiation - 🔸🔶CORRECT ANSWERS ✔✔The X-ray beam that
leaves the tube and is unattenuated, except by air
longitudinal - 🔸🔶CORRECT ANSWERS ✔✔Tube motion along the long
axis of the table
transverse - 🔸🔶CORRECT ANSWERS ✔✔Tube motion across the table, at
right angles to longitudinal
vertical - 🔸🔶CORRECT ANSWERS ✔✔Tube motion up and down,
increasing or decreasing the distance between the tube and the table
, Angle (tilt, roll) - 🔸🔶CORRECT ANSWERS ✔✔Permits angulation of the
tube along the longitudinal axis of the table
Rotation - 🔸🔶CORRECT ANSWERS ✔✔Allows the entire tube stand to turn
on its axis
X-Ray tube - 🔸🔶CORRECT ANSWERS ✔✔the source of x-rays
phosphor material - 🔸🔶CORRECT ANSWERS ✔✔Used in a closed cassette
rather than on film to obtain computed radiography (CR) images
ceiling support system - 🔸🔶CORRECT ANSWERS ✔✔most common, has 2
sets of rails that allow for lateral and longitudinal movement, lock and raise
and lower to obtain the correct distances
floor to ceiling support system - 🔸🔶CORRECT ANSWERS ✔✔Has a single
column with rollers at each end, one attached to the ceiling-mounted rail and
the other attached to a floor-mounted rail
What are the three parts of the external part of the x-ray tube? -
🔸🔶CORRECT ANSWERS ✔✔support structure, protective housing, and
glass or metal enclosure
What are the internal parts of the x-ray tube? - 🔸🔶CORRECT ANSWERS
✔✔cathode and anode
