GXMO Ohio All Possible Questions and Answers with complete solution

GXMO Ohio

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. - CORRECT
ANSWER-American Registry of Radiologic Technologists (ARRT)

Unintended optical density on a radiograph or another film-type image receptor -
CORRECT ANSWER-Artifact

Professional organization that promotes research, continuing education and guidelines
for radiography instruction - CORRECT ANSWER-American Society of Radiologic
Technologists (ASRT)

Smallest particle of an element that cannot be divided or broken by chemical means -
CORRECT ANSWER-Atom

number of protons in the nucleus - CORRECT ANSWER-Atomic Number (Z)

absorption of the x-ray beam in matter, usually the human body - CORRECT ANSWER-
Attenuation

feature/device that determines radiation exposure during radiography in most x-ray
imaging systems - CORRECT ANSWER-Automatic Exposure Control (AEC)

when the exposure timer is manually set by the operator to a time greater than the
anticipated exposure time - CORRECT ANSWER-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 -
CORRECT ANSWER-Bergonie-Tribondeau law

the energy required to separate a single particle or group of particles from a molecule,
atom, or nucleus - CORRECT ANSWER-Binding energy

the damage produced from exposure to radiation - CORRECT ANSWER-Biological
Damage

x-ray that results from interaction of the projectile electron with a target nucleus, also
known as breaking radiation - CORRECT ANSWER-Bremsstrahlung x-ray

a device that contains a moving grid - CORRECT ANSWER-Bucky Tray

, a tool used for body part measurement - CORRECT ANSWER-Caliper

The methods used to protect operators from unnecessary radiation exposure; time,
distance and shielding - CORRECT ANSWER-Cardinal Principles of Radiation
Protection

A rigid holder that contains the film and screens - CORRECT ANSWER-Cassette

negative side of the x-ray tube, contains the filament and the focusing cup - CORRECT
ANSWER-Cathode

Center of the primary x-ray beam that interacts with the image receptor - CORRECT
ANSWER-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 - CORRECT ANSWER-Characteristic Radiation

Scattering of x-rays with no loss of energy; also called classical scattering - CORRECT
ANSWER-Coherent Scattering

Restriction of the useful x-ray beam to reduce patient dose and improve image contrast
- CORRECT ANSWER-Collimation

boxlike device attached under the tube housing which allows the x-ray operator to vary
the beam size and shape - CORRECT ANSWER-Collimator

Material Inserted between an x-ray source and a patient to shape the intensity of the x-
ray beam - CORRECT ANSWER-Compensating Filter

Interaction between an x-ray and a loosely bound outer-shell electron that results in
ionization and x-ray scattering - CORRECT ANSWER-Compton Scattering

One of two types of digital imaging systems. Cassette based and uses a
photostimulable phosphor as the image receptor - CORRECT ANSWER-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 -
CORRECT ANSWER-Computed Tomography (CT)

degree of difference between light and dark areas of a radiograph - CORRECT
ANSWER-Contrast

The ability to distinguish anatomical structures of similar subject contrast such as liver-
spleen and gray matter-white matter - CORRECT ANSWER-Contrast Resolution