Rad Theory Final Exam Review
Questions and Answers
A form of energy carried by waves or a stream of particles - Answer-Radiation is defined as
A picture on film produced by the passage of x-rays through an object or body - Answer-A radiograph is
defined as
Many dental diseases are typically discovered only through the use of dental images. - Answer-Your
patient asked you why dental images are important
Gordon Fitzgerald modified the paralleling technique with the introduction of the long-cone technique. -
Answer-Who modified the paralleling technique with the introduction of the long-cone technique?
An image receptor is the recording medium (film, phosphor plate, or digital sensor) that is placed in the
patient's mouth to record the image produced - Answer-Which of the following would you place in the
patient's mouth in order to take dental x-rays?
. The K shell is the orbiting shell closest to the nucleus. - Answer-Which of the following statements is
true of orbits or shells in the atom?
determined by the distance between the orbiting electron and the *nucleus * - Answer-The binding
energy or binding force of an electron is
, Insulating oil - Answer-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?
Milliamperage - Answer-Which would you adjust if you wanted to create a larger electron cloud?
quality - Answer-In dental radiography, the term ________ is used to describe the mean energy or
penetrating ability of the x-ray beam.
Density is the overall darkness or blackness of a dental image. The first statement is true; however, the
second statement is false. - Answer-(1) Density is the overall darkness or blackness of a dental image.
(2) When the kilovoltage is increased while other exposure factors remain constant, the resultant image
exhibits a decreased density and appears lighter.
quantity of electrons produced at the cathode filament. - Answer-Milliamperage regulates the
_________ of electrons produced at the cathode filament.
four times as intense. - Answer-According to the inverse square law, if the length of the PID is halved,
the resultant beam is ___________ as intense.
Both statements are false; 1. An increase in kilovoltage, milliamperage, and/or time will increase the
intensity of the x-ray beam. 2. An increase in distance and/or filtration will decrease the intensity of the
x-ray beam. - Answer-(1) As kilovoltage, milliamperage, and time increase, x-ray beam intensity
decreases. (2) As distance and filtration increase, the intensity of the x-ray beam increases.
Total dose refers to the quantity of radiation received or the total amount of radiation energy absorbed.
- Answer-__ refers to the total amount of radiation that is received or absorbed
Both statements are true - Answer-(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.
Questions and Answers
A form of energy carried by waves or a stream of particles - Answer-Radiation is defined as
A picture on film produced by the passage of x-rays through an object or body - Answer-A radiograph is
defined as
Many dental diseases are typically discovered only through the use of dental images. - Answer-Your
patient asked you why dental images are important
Gordon Fitzgerald modified the paralleling technique with the introduction of the long-cone technique. -
Answer-Who modified the paralleling technique with the introduction of the long-cone technique?
An image receptor is the recording medium (film, phosphor plate, or digital sensor) that is placed in the
patient's mouth to record the image produced - Answer-Which of the following would you place in the
patient's mouth in order to take dental x-rays?
. The K shell is the orbiting shell closest to the nucleus. - Answer-Which of the following statements is
true of orbits or shells in the atom?
determined by the distance between the orbiting electron and the *nucleus * - Answer-The binding
energy or binding force of an electron is
, Insulating oil - Answer-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?
Milliamperage - Answer-Which would you adjust if you wanted to create a larger electron cloud?
quality - Answer-In dental radiography, the term ________ is used to describe the mean energy or
penetrating ability of the x-ray beam.
Density is the overall darkness or blackness of a dental image. The first statement is true; however, the
second statement is false. - Answer-(1) Density is the overall darkness or blackness of a dental image.
(2) When the kilovoltage is increased while other exposure factors remain constant, the resultant image
exhibits a decreased density and appears lighter.
quantity of electrons produced at the cathode filament. - Answer-Milliamperage regulates the
_________ of electrons produced at the cathode filament.
four times as intense. - Answer-According to the inverse square law, if the length of the PID is halved,
the resultant beam is ___________ as intense.
Both statements are false; 1. An increase in kilovoltage, milliamperage, and/or time will increase the
intensity of the x-ray beam. 2. An increase in distance and/or filtration will decrease the intensity of the
x-ray beam. - Answer-(1) As kilovoltage, milliamperage, and time increase, x-ray beam intensity
decreases. (2) As distance and filtration increase, the intensity of the x-ray beam increases.
Total dose refers to the quantity of radiation received or the total amount of radiation energy absorbed.
- Answer-__ refers to the total amount of radiation that is received or absorbed
Both statements are true - Answer-(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.
