TCDHA Rad Final Review Questions and Answers Fully Solved 100%
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TCDHA Rad
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TCDHA Rad
(1) density is the overall darkness or blackness of a dental image (2) when the
kilovoltage is increased while other exposure factors rain constant, the resultant image
exhibits a decreased density and appears lighter - ️️first statement is true; the
second statement is false
then you are p...
TCDHA Rad Final Review
(1) density is the overall darkness or blackness of a dental image (2) when the
kilovoltage is increased while other exposure factors rain constant, the resultant image
exhibits a decreased density and appears lighter - ✔️✔️first statement is true; the
second statement is false
then you are placing the film packet in your patients mouth, which side of the film packet
would you place toward the patients teeth? - ✔️✔️the solid white side
who modified the paralleling technique with the introduction of the long-cone technique -
✔️✔️F. Gordon Fitzgerald
which of the following would you place in the patients mouth in order to take dental x-
rays - ✔️✔️image receptor
the orbiting shell closest to the nucleus has the highest energy level - ✔️✔️true
the binding energy or binding force of an electron is - ✔️✔️determined by the distance
between the orbiting electrons and the nucleus
radiation is defined as - ✔️✔️a form of energy carried by waves or streams of particles
ionization - ✔️✔️an atom that gains an electron has a negative charge, and an atom
that loses an electron has a positive charge
ionizing radiation - ✔️✔️radiation that is capable of producing ions by removing or
adding an electron to an atom
a radiograph is defined as - ✔️✔️a picture on film produced by the passage of x-rays
through an object or body
why are dental images important - ✔️✔️many dental diseases are typically discovered
only through the use of dental images
Heat is a byproduct of x-ray production. Which component of the x-ray tubehead
dissipates the heat created by the production of x-rays? - ✔️✔️insulation oil
the head collimator - ✔️✔️restricts the size of the x-ray beam
which would you adjust if you wanted to create a larger electron cloud - ✔️✔️mA
, in dental radiography, the term .......... is used to describe the mean energy or
penetrating ability of the x-ray beam - ✔️✔️quality
mA regulates the ........... of electrons produced at the cathode filament - ✔️✔️quantity
according to the inverse square law, if the length of the PID is halved, the resultant
beam ............. as intense - ✔️✔️one quarter
(1) as kV, mA, and time increases, x-ray beam intensity decreases (2) as distance and
filtration increase, the intensity of the x-ray beam increase - ✔️✔️both statements are
fals
refers to the total amount of radiation that is received or absorbed - ✔️✔️total dose
(1) more radiation damage takes place with high dose rates (2) because a rapid delivery
of radiation does not allow time for cellular damage to be repaired - ✔️✔️both
statements are true
what should you do prior to taking x-rays to protect your patient from radiation exposure
- ✔️✔️proper prescribing of radiographs
the thyroid collar - ✔️✔️is recommended for all intraoral exposures
the lead apron - ✔️✔️is recommended for intraoral exposures
on some dental x-ray machines, only the .......... can be altered; the other parameters
are preset by the manufacturer - ✔️✔️exposure time
a film badge - ✔️✔️is worn at waist level by the operator
the ........ allow for positioning of the tubehead - ✔️✔️extension arm
during an exposure - ✔️✔️the exposure button is firmly depressed until the preset
exposure time is completed
what intraoral receptor holders is a disposable styrofoam-bite block? - ✔️✔️state bite-
block
features of the state bite-block include - ✔️✔️a slot for receptor retention
the rinn XCP is a - ✔️✔️beam alignment device
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