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GXMO Study Guide III -Questions and 100% Correct Verified Answers
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GXMO Study Guide III -Questions and100% Correct Verified Answers
ASRT - American Society of Radiologic Tecnologists - Answer Professional organization
that promotes research, continuing education and the guidelines for radiography
instructions
Atom - Answer Smallest particle of an element that cannot be divided or broken
by chemical means
Atomic Number (z) - Answer Number of protons in a nucleus
Attenuation - Answer Absorption of the x-ray beam in matter, usually the human body
Automatic exposure control (AEC) - Answer Feature that determines radiation exposure
during radiography in most x-ray imaging systems
Back-up time - Answer When the exposure timer is manually set by the operator to a
time that is greater than the anticipated exposure time
Bergonie-Tribondeau Law - Answer Principle that states that the radio sensitivity of cells
is directly proportional to the reproductive activity and inversely proportional to their
degree of differentiation
Binding Energy - Answer The energy required to separate a single particle or group
of particles from a molecule, atom or nucleus
Biological Damage - Answer The damage produced from exposure to radiation
,Absorption - Answer When all of the x-ray energy is absorbed by the ejected electron
Acute radiation syndrome - Answer Radiation sickness that occurs in humans after
whole-body doses of 1 Gy or more of ionizing radiation delivered over a short time;
not seen in diagnostic imaging
ALARA - Answer Principle that states that rad exposure should be As Low As
Reasonably Achievable
Anatomic Position - Answer 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
Anatomically Programmed Radiography (APR) - Answer Technique by which graphics
on the console guide the operator in section of a desired kVp and mAs
Angiography - Answer The fluoroscopic imaging of blood vessels
Anode - Answer Positively charged side of an x-ray tube that contains the target
Anterior-posterior - Answer From front to back
ARRT - American Registry of Radiologic Technologists - Answer The world's largest
credentialing organization in medical imaging, interventional procedures, and
radiation therapy; certify and register technologist through administration of
education, ethics and examination requirements
, Artifact - Answer Unintended optical density on a radiograph or another film-type image
receptor
Bremsstrahlung x-ray - Answer X-ray that results from interaction of the
projectile electron with a target nucleus; also know as breaking radiation
Bucky Tray - Answer A device that contains a moving grid
Caliper - Answer A tool for a body part measurement
Cardinal principles of radiation protection - Answer The methods used to protect
operators from unnecessary radiation exposure; time, distance and shielding
Cassette - Answer A rigid holder that contains the film and screens
Cathode - Answer Negative side of the x-ray tube; contains the filament and
the focusing cup
Central ray - Answer Center of the primary x-ray beam that interacts with the image
receptor
Characteristic radiation - Answer One of two types of x-ray productions. It is created
when an electron enters the tungsten anode of the x-ray tube and knocks out a K-shell
electron. This interaction produces and x-ray photon.
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