GXMO OHIO Test Questions Well Answered Graded A+
When all of the x-ray energy is absorbed by the ejected electron - Answers Absorption
Radiation sickness that occurs in humans after whole-body doses of 1 Gy (100 rad) or more of ionizing
radiation delivered over a short time not seen in diagnostic imaging - Answers acute radiation syndrome
(radiation exposure)As Low As Reasonably Achievable - Answers ALARA
The position in which the patient is standing erect; with the face directed forward, arms extended by the
sides with the palms facing forward, and the toes pointing anteriorly - Answers Anatomic Position
Technique by which graphics on the console guide the operator in selection of a desired kVp and mAs -
Answers Anatomically Programmed Radiography (APR)
The fluoroscopic imaging of blood vessels - Answers Angiography
Positively charged side of an x-ray tube that contains the target - Answers Anode
from front to back - Answers Anterior-Posterior
The world's largest credentialing organization in medical imaging, interventional procedures, and
radiation therapy; certify and register technologists through administration of education, ethics and
examination requirements. - Answers American Registry of Radiologic Technologists (ARRT)
Unintended optical density on a radiograph or another film-type image receptor - Answers Artifact
Professional organization that promotes research, continuing education and guidelines for radiography
instruction - Answers American Society of Radiologic Technologists (ASRT)
Smallest particle of an element that cannot be divided or broken by chemical means - Answers Atom
number of protons in the nucleus - Answers Atomic Number (Z)
absorption of the x-ray beam in matter, usually the human body - Answers Attenuation
feature/device that determines radiation exposure during radiography in most x-ray imaging systems -
Answers Automatic Exposure Control (AEC)
when the exposure timer is manually set by the operator to a time greater than the anticipated
exposure time - Answers Back-up time
principle that states that the radiosensitivity of cells is directly proportional to their reproductive activity
and inversely proportional to their degree of differentiation - Answers Bergonie-Tribondeau law
the energy required to separate a single particle or group of particles from a molecule, atom, or nucleus
- Answers Binding energy
, the damage produced from exposure to radiation - Answers Biological Damage
x-ray that results from interaction of the projectile electron with a target nucleus, also known as
breaking radiation - Answers Bremsstrahlung x-ray
a device that contains a moving grid - Answers Bucky Tray
a tool used for body part measurement - Answers Caliper
The methods used to protect operators from unnecessary radiation exposure; time, distance and
shielding - Answers Cardinal Principles of Radiation Protection
A rigid holder that contains the film and screens - Answers Cassette
negative side of the x-ray tube, contains the filament and the focusing cup - Answers Cathode
Center of the primary x-ray beam that interacts with the image receptor - Answers Central Ray
One of two types of x-ray productions. created when an electron enters the tungsten anode of the x-ray
tube and knocks out a K-shell electron. This interaction produces an x-ray photon - Answers
Characteristic Radiation
Scattering of x-rays with no loss of energy; also called classical scattering - Answers Coherent Scattering
Restriction of the useful x-ray beam to reduce patient dose and improve image contrast - Answers
Collimation
boxlike device attached under the tube housing which allows the x-ray operator to vary the beam size
and shape - Answers Collimator
Material Inserted between an x-ray source and a patient to shape the intensity of the x-ray beam -
Answers Compensating Filter
Interaction between an x-ray and a loosely bound outer-shell electron that results in ionization and x-ray
scattering - Answers Compton Scattering
One of two types of digital imaging systems. Cassette based and uses a photostimulable phosphor as the
image receptor - Answers Computed Radiography (CR)
radiography in which a three-dimensional image of a body structure is constructed by computer from a
series of plane cross-sectional images made along an axis - Answers Computed Tomography (CT)
degree of difference between light and dark areas of a radiograph - Answers Contrast
The ability to distinguish anatomical structures of similar subject contrast such as liver-spleen and gray
matter-white matter - Answers Contrast Resolution
When all of the x-ray energy is absorbed by the ejected electron - Answers Absorption
Radiation sickness that occurs in humans after whole-body doses of 1 Gy (100 rad) or more of ionizing
radiation delivered over a short time not seen in diagnostic imaging - Answers acute radiation syndrome
(radiation exposure)As Low As Reasonably Achievable - Answers ALARA
The position in which the patient is standing erect; with the face directed forward, arms extended by the
sides with the palms facing forward, and the toes pointing anteriorly - Answers Anatomic Position
Technique by which graphics on the console guide the operator in selection of a desired kVp and mAs -
Answers Anatomically Programmed Radiography (APR)
The fluoroscopic imaging of blood vessels - Answers Angiography
Positively charged side of an x-ray tube that contains the target - Answers Anode
from front to back - Answers Anterior-Posterior
The world's largest credentialing organization in medical imaging, interventional procedures, and
radiation therapy; certify and register technologists through administration of education, ethics and
examination requirements. - Answers American Registry of Radiologic Technologists (ARRT)
Unintended optical density on a radiograph or another film-type image receptor - Answers Artifact
Professional organization that promotes research, continuing education and guidelines for radiography
instruction - Answers American Society of Radiologic Technologists (ASRT)
Smallest particle of an element that cannot be divided or broken by chemical means - Answers Atom
number of protons in the nucleus - Answers Atomic Number (Z)
absorption of the x-ray beam in matter, usually the human body - Answers Attenuation
feature/device that determines radiation exposure during radiography in most x-ray imaging systems -
Answers Automatic Exposure Control (AEC)
when the exposure timer is manually set by the operator to a time greater than the anticipated
exposure time - Answers Back-up time
principle that states that the radiosensitivity of cells is directly proportional to their reproductive activity
and inversely proportional to their degree of differentiation - Answers Bergonie-Tribondeau law
the energy required to separate a single particle or group of particles from a molecule, atom, or nucleus
- Answers Binding energy
, the damage produced from exposure to radiation - Answers Biological Damage
x-ray that results from interaction of the projectile electron with a target nucleus, also known as
breaking radiation - Answers Bremsstrahlung x-ray
a device that contains a moving grid - Answers Bucky Tray
a tool used for body part measurement - Answers Caliper
The methods used to protect operators from unnecessary radiation exposure; time, distance and
shielding - Answers Cardinal Principles of Radiation Protection
A rigid holder that contains the film and screens - Answers Cassette
negative side of the x-ray tube, contains the filament and the focusing cup - Answers Cathode
Center of the primary x-ray beam that interacts with the image receptor - Answers Central Ray
One of two types of x-ray productions. created when an electron enters the tungsten anode of the x-ray
tube and knocks out a K-shell electron. This interaction produces an x-ray photon - Answers
Characteristic Radiation
Scattering of x-rays with no loss of energy; also called classical scattering - Answers Coherent Scattering
Restriction of the useful x-ray beam to reduce patient dose and improve image contrast - Answers
Collimation
boxlike device attached under the tube housing which allows the x-ray operator to vary the beam size
and shape - Answers Collimator
Material Inserted between an x-ray source and a patient to shape the intensity of the x-ray beam -
Answers Compensating Filter
Interaction between an x-ray and a loosely bound outer-shell electron that results in ionization and x-ray
scattering - Answers Compton Scattering
One of two types of digital imaging systems. Cassette based and uses a photostimulable phosphor as the
image receptor - Answers Computed Radiography (CR)
radiography in which a three-dimensional image of a body structure is constructed by computer from a
series of plane cross-sectional images made along an axis - Answers Computed Tomography (CT)
degree of difference between light and dark areas of a radiograph - Answers Contrast
The ability to distinguish anatomical structures of similar subject contrast such as liver-spleen and gray
matter-white matter - Answers Contrast Resolution
