TCDHA RAD 1 Exam Actual Exam 2025 |
Complete Questions and Correct Answers |
Graded A+ | Verified Answers | Latest
Version | Brand New Version!
Cathode rays are derived from which of the following types of particulate
radiation?
a. Electrons
b. Alpha Particles
c. Protons
d. alpha particle decay ---------CORRECT ANSWER-----------------a. Electrons
What type of radiation includes x-rays and visible light? ---------CORRECT ANSWER-
----------------Electromagnetic
Approximately what percentage of the kinetic energy of the electrons is
converted to x-rays at the anode? ---------CORRECT ANSWER-----------------Less than
1%
What restricts the size of the x-ray beam? ---------CORRECT ANSWER-----------------
The Lead Collimator
,Which form of the x-ray beam is more detrimental to the patient and operator? --
-------CORRECT ANSWER-----------------Scatter Radiation
What happens with the electrons when the kilovoltage is increased? ---------
CORRECT ANSWER-----------------The electrons moves from the CATHODE to the
ANODE with more speed
Higher-energy x-ray beam with increased penetrating ability results by... ---------
CORRECT ANSWER-----------------When the kilovolt is increased
(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.
a. Both statement are true
b. Both statement are false
c. The first statement is true; the second statement is false ---------CORRECT
ANSWER-----------------c. The first statement is true; the second statement is false
What controls the quantity of x-rays produced? ---------CORRECT ANSWER-----------
------Milliamperage (mA)
, In regard to increasing density: ---------CORRECT ANSWER-----------------An increase
in either kVp or mA will increase density.
According to inverse square law, the intensity of radiation is ________
proportional to the _________ from the source of radiation. ---------CORRECT
ANSWER-----------------Inversely; square of the distance
Aluminium filters are used to remove ________ -energy, _________ wavelength
x-rays. ---------CORRECT ANSWER-----------------Low; Longer
What specific mechanism of radiation injury may result in the formation of
hydrogen peroxide when x-ray energy is absorbed by patients? ---------CORRECT
ANSWER-----------------Free radical formation created by the ionization of water
may occur.
What is associated with long-term radiation effects? ---------CORRECT ANSWER-----
------------Small amounts of radiation absorbed over a long period.
Which of the following is the LEAST sensitive to x-rays?
a. Bone marrow
Complete Questions and Correct Answers |
Graded A+ | Verified Answers | Latest
Version | Brand New Version!
Cathode rays are derived from which of the following types of particulate
radiation?
a. Electrons
b. Alpha Particles
c. Protons
d. alpha particle decay ---------CORRECT ANSWER-----------------a. Electrons
What type of radiation includes x-rays and visible light? ---------CORRECT ANSWER-
----------------Electromagnetic
Approximately what percentage of the kinetic energy of the electrons is
converted to x-rays at the anode? ---------CORRECT ANSWER-----------------Less than
1%
What restricts the size of the x-ray beam? ---------CORRECT ANSWER-----------------
The Lead Collimator
,Which form of the x-ray beam is more detrimental to the patient and operator? --
-------CORRECT ANSWER-----------------Scatter Radiation
What happens with the electrons when the kilovoltage is increased? ---------
CORRECT ANSWER-----------------The electrons moves from the CATHODE to the
ANODE with more speed
Higher-energy x-ray beam with increased penetrating ability results by... ---------
CORRECT ANSWER-----------------When the kilovolt is increased
(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.
a. Both statement are true
b. Both statement are false
c. The first statement is true; the second statement is false ---------CORRECT
ANSWER-----------------c. The first statement is true; the second statement is false
What controls the quantity of x-rays produced? ---------CORRECT ANSWER-----------
------Milliamperage (mA)
, In regard to increasing density: ---------CORRECT ANSWER-----------------An increase
in either kVp or mA will increase density.
According to inverse square law, the intensity of radiation is ________
proportional to the _________ from the source of radiation. ---------CORRECT
ANSWER-----------------Inversely; square of the distance
Aluminium filters are used to remove ________ -energy, _________ wavelength
x-rays. ---------CORRECT ANSWER-----------------Low; Longer
What specific mechanism of radiation injury may result in the formation of
hydrogen peroxide when x-ray energy is absorbed by patients? ---------CORRECT
ANSWER-----------------Free radical formation created by the ionization of water
may occur.
What is associated with long-term radiation effects? ---------CORRECT ANSWER-----
------------Small amounts of radiation absorbed over a long period.
Which of the following is the LEAST sensitive to x-rays?
a. Bone marrow
