RAD MIDTERM 1 TCDHA UPDATED ACTUAL 100
QUESTIONS EXAM 2026/2027 || RADIOLOGIC
TECHNOLOGY REVIEW || DIAGNOSTIC IMAGING &
PATIENT CARE || UPDATED PRACTICE QUESTIONS WITH
VERIFIED ANSWERS || HIGH-YIELD STUDY GUIDE ||
COMPLETE TEST BANK || GRADED A+
1. Radiation is defined as
a. a form of energy carried by waves or streams of particles.
b. a beam of energy that has the power to penetrate substances and record image
shadows on a receptor.
c. a high-energy radiation produced by the collision of a beam of electrons with
a metal target in an x-ray tube.
d. a branch of medicine that deals with the use of x-rays. - CORRECT
ANSWER -a. a form of energy carried by waves or streams of particles.
2. A radiograph is defined as
a. a beam of energy that has the power to penetrate substances and record image
shadows on a receptor.
b. a picture on film produced by the passage of x-rays through an object or
body.
c. the art and science of making radiographs by the exposure of an image
receptor to x-rays.
d. a form of energy carried by waves or a stream of particles. - CORRECT
ANSWER -b. a picture on film produced by the passage of x-rays through an
object or body.
3. Your patient asked you why dental images are important. Which of the
following is the correct response?
,a. An oral examination with dental images limits the practitioner to what is seen
clinically.
b. All dental diseases and conditions produce clinical signs and symptoms.
c. Dental images are not a necessary component of comprehensive patient care.
d. Many dental diseases are typically discovered only through the use of dental
images. - CORRECT ANSWER -d. Many dental diseases are typically
discovered only through the use of dental images.
4. Who modified the paralleling technique with the introduction of the long-
cone technique?
a. C. Edmund Kells
b. Franklin W. McCormack
c. F. Gordon Fitzgerald
d. Howard Riley Raper - CORRECT ANSWER -c. F. Gordon Fitzgerald
5. Which of the following would you place in the patient's mouth in order to
take dental x-rays?
a. Image
b. Image receptor
c. Radiograph
d. Dental radiograph - CORRECT ANSWER -b. Image receptor
6. Which of the following statements is true of orbits or shells in the atom?
a. Protons travel around the nucleus in well-defined shells.
,b. An atom contains innumerable shells.
c. The energy level within each shell is the same.
d. The orbiting shell closest to the nucleus has the highest energy level. -
CORRECT ANSWER -d. The orbiting shell closest to the nucleus has the
highest energy level.
7. The binding energy or binding force of an electron is
a. determined by the distance between the neutrons and protons within the
nucleus.
b. determined by the distance between the orbiting electrons and the nucleus.
c. weaker for electrons located in inner shells than in outer shells.
d. determined by the atomic number. - CORRECT ANSWER -b.
determined by the distance between the orbiting electrons and the nucleus.
8. Which of the following statements is true of ionization?
a. An atom that gains an electron will have a negative charge.
b. An atom that loses an electron will have a negative charge.
c. An atom that loses an electron will have a positive charge.
d. An atom that gains an electron has a negative charge, and an atom that loses
an electron has a positive charge. - CORRECT ANSWER -d. An atom that
gains an electron has a negative charge, and an atom that loses an electron has a
positive charge.
9. Which of the following statements is true of ionizing radiation?
a. It is radiation that is capable of producing ions by removing or adding an
electron to an atom.
, b. It is strictly an electromagnetic radiation and does not involve particles that
have mass.
c. It is strictly particulate radiation and can-not travel as waves.
d. It can only travel at the speed of light. - CORRECT ANSWER -a. It is
radiation that is capable of producing ions by removing or adding an electron to
an atom.
10. 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?
a. Metal housing
b. Insulating oil
c. Aluminum discs
d. Lead collimator - CORRECT ANSWER -b. Insulating oil
11. The lead collimator
a. carries away the heat produced during the production of x-rays.
b. permits a small number of x-rays to exit from the x-ray tube.
c. filters the longer-wavelength x-rays from the beam.
d. restricts the size of the x-ray beam. - CORRECT ANSWER -d. restricts
the size of the x-ray beam.
12. Which would you adjust if you wanted to create a larger electron cloud?
a. Milliamperage
b. Kilovoltage
c. Step-up transformer
QUESTIONS EXAM 2026/2027 || RADIOLOGIC
TECHNOLOGY REVIEW || DIAGNOSTIC IMAGING &
PATIENT CARE || UPDATED PRACTICE QUESTIONS WITH
VERIFIED ANSWERS || HIGH-YIELD STUDY GUIDE ||
COMPLETE TEST BANK || GRADED A+
1. Radiation is defined as
a. a form of energy carried by waves or streams of particles.
b. a beam of energy that has the power to penetrate substances and record image
shadows on a receptor.
c. a high-energy radiation produced by the collision of a beam of electrons with
a metal target in an x-ray tube.
d. a branch of medicine that deals with the use of x-rays. - CORRECT
ANSWER -a. a form of energy carried by waves or streams of particles.
2. A radiograph is defined as
a. a beam of energy that has the power to penetrate substances and record image
shadows on a receptor.
b. a picture on film produced by the passage of x-rays through an object or
body.
c. the art and science of making radiographs by the exposure of an image
receptor to x-rays.
d. a form of energy carried by waves or a stream of particles. - CORRECT
ANSWER -b. a picture on film produced by the passage of x-rays through an
object or body.
3. Your patient asked you why dental images are important. Which of the
following is the correct response?
,a. An oral examination with dental images limits the practitioner to what is seen
clinically.
b. All dental diseases and conditions produce clinical signs and symptoms.
c. Dental images are not a necessary component of comprehensive patient care.
d. Many dental diseases are typically discovered only through the use of dental
images. - CORRECT ANSWER -d. Many dental diseases are typically
discovered only through the use of dental images.
4. Who modified the paralleling technique with the introduction of the long-
cone technique?
a. C. Edmund Kells
b. Franklin W. McCormack
c. F. Gordon Fitzgerald
d. Howard Riley Raper - CORRECT ANSWER -c. F. Gordon Fitzgerald
5. Which of the following would you place in the patient's mouth in order to
take dental x-rays?
a. Image
b. Image receptor
c. Radiograph
d. Dental radiograph - CORRECT ANSWER -b. Image receptor
6. Which of the following statements is true of orbits or shells in the atom?
a. Protons travel around the nucleus in well-defined shells.
,b. An atom contains innumerable shells.
c. The energy level within each shell is the same.
d. The orbiting shell closest to the nucleus has the highest energy level. -
CORRECT ANSWER -d. The orbiting shell closest to the nucleus has the
highest energy level.
7. The binding energy or binding force of an electron is
a. determined by the distance between the neutrons and protons within the
nucleus.
b. determined by the distance between the orbiting electrons and the nucleus.
c. weaker for electrons located in inner shells than in outer shells.
d. determined by the atomic number. - CORRECT ANSWER -b.
determined by the distance between the orbiting electrons and the nucleus.
8. Which of the following statements is true of ionization?
a. An atom that gains an electron will have a negative charge.
b. An atom that loses an electron will have a negative charge.
c. An atom that loses an electron will have a positive charge.
d. An atom that gains an electron has a negative charge, and an atom that loses
an electron has a positive charge. - CORRECT ANSWER -d. An atom that
gains an electron has a negative charge, and an atom that loses an electron has a
positive charge.
9. Which of the following statements is true of ionizing radiation?
a. It is radiation that is capable of producing ions by removing or adding an
electron to an atom.
, b. It is strictly an electromagnetic radiation and does not involve particles that
have mass.
c. It is strictly particulate radiation and can-not travel as waves.
d. It can only travel at the speed of light. - CORRECT ANSWER -a. It is
radiation that is capable of producing ions by removing or adding an electron to
an atom.
10. 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?
a. Metal housing
b. Insulating oil
c. Aluminum discs
d. Lead collimator - CORRECT ANSWER -b. Insulating oil
11. The lead collimator
a. carries away the heat produced during the production of x-rays.
b. permits a small number of x-rays to exit from the x-ray tube.
c. filters the longer-wavelength x-rays from the beam.
d. restricts the size of the x-ray beam. - CORRECT ANSWER -d. restricts
the size of the x-ray beam.
12. Which would you adjust if you wanted to create a larger electron cloud?
a. Milliamperage
b. Kilovoltage
c. Step-up transformer
