X-RAY CORE QUESTIONS AND
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED A+
What is true regarding the link between radiation dose and genetic effect?
✔✔ Answer: The link has been demonstrated in animal studies, but risk in humans
cannot be precisely predicted for individuals
True or False: Diagnostic radiography involves very high radiation doses and
extremely large risks to patients and operators.
✔✔ Answer: False
(Diagnostic radiography uses very small doses of radiation, so risk is low though
protection is still required.)
Ionizing Radiation
✔✔ Answer: Radiation that produces positively and negatively charged particles
when it passes through the body
Radiation Protection
✔✔ Answer: Measures taken to protect patients, staff, and the public from
unnecessary exposure to ionizing radiation
Roentgen R -ANSWER ✔✔The conventional unit of radiation exposure that
represents a measurement of the radiation intensity in the air. This is determined by
the ionization of air resulting from interaction with the x-ray beam.
X-ray tube -ANSWER ✔✔The source of x-rays
,Tube housing -ANSWER ✔✔Lead-lining that surrounds the x-ray tube. If the x-
ray that are produced by the tube are not traveling in a useful direction get
absorbed by this lead lined housing. If they are traveling in a useful direction than
they exit the housing through an opening called the tube port.
X-ray beams -ANSWER ✔✔A cone shaped beam is formed when it exits the tube
port. It has an imaginary line in the center of the beam and perpendicular to the
long axis of the x-ray tube called the central ray. A radiation field is formed at the
point where it is used.
Tissue density and radiation -ANSWER ✔✔Anatomical structures with greater
tissue density (mass) such as bones will absorb more radiation than less dense
tissue such as fat.
Remnant radiation -ANSWER ✔✔The radiation that exits or leaves the patient's
body and exposes the film
Latent image -ANSWER ✔✔The image contained in the film before it is
processed.
Attenuation -ANSWER ✔✔Absorption of the x-ray beam. These x-rays can either
be totally absorbed within the body, reduced in energy, or scattered outside of the
body.
Scattered radiation -ANSWER ✔✔This type of radiation typically has less energy
than the primary x-ray beam, but it is not as easily controlled and travels in all
directions causing unwanted exposure to the film and to anyone in the room.
, Scatter radiation fog -ANSWER ✔✔The unwanted image exposure caused by
scatter radiation
Image Receptor -ANSWER ✔✔IR
IR system -ANSWER ✔✔consists of the x-ray film and the film holder.
Cassette -ANSWER ✔✔Film holder. Protects the film from damage and exposure
to light during dadiography
Computer Radiography (CR) -ANSWER ✔✔A filmless system where the x-ray
image is produced in digital format using computer technology. The image is
obtained in a phosphor material on a plate inside a closed cassette rather than on a
film in a light-tight cassette.
X-ray room -ANSWER ✔✔This room includes the x-ray equipment, a counter
area, and a protective control booth.
Longitudinal -ANSWER ✔✔Tube motion along the long axis of the table
Transverse -ANSWER ✔✔Tube motion across the table at right angels to the
longitudinal
Vertical -ANSWER ✔✔Tube motion that is up and down, increasing or decreasing
the distance between the tube and the table.
ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED A+
What is true regarding the link between radiation dose and genetic effect?
✔✔ Answer: The link has been demonstrated in animal studies, but risk in humans
cannot be precisely predicted for individuals
True or False: Diagnostic radiography involves very high radiation doses and
extremely large risks to patients and operators.
✔✔ Answer: False
(Diagnostic radiography uses very small doses of radiation, so risk is low though
protection is still required.)
Ionizing Radiation
✔✔ Answer: Radiation that produces positively and negatively charged particles
when it passes through the body
Radiation Protection
✔✔ Answer: Measures taken to protect patients, staff, and the public from
unnecessary exposure to ionizing radiation
Roentgen R -ANSWER ✔✔The conventional unit of radiation exposure that
represents a measurement of the radiation intensity in the air. This is determined by
the ionization of air resulting from interaction with the x-ray beam.
X-ray tube -ANSWER ✔✔The source of x-rays
,Tube housing -ANSWER ✔✔Lead-lining that surrounds the x-ray tube. If the x-
ray that are produced by the tube are not traveling in a useful direction get
absorbed by this lead lined housing. If they are traveling in a useful direction than
they exit the housing through an opening called the tube port.
X-ray beams -ANSWER ✔✔A cone shaped beam is formed when it exits the tube
port. It has an imaginary line in the center of the beam and perpendicular to the
long axis of the x-ray tube called the central ray. A radiation field is formed at the
point where it is used.
Tissue density and radiation -ANSWER ✔✔Anatomical structures with greater
tissue density (mass) such as bones will absorb more radiation than less dense
tissue such as fat.
Remnant radiation -ANSWER ✔✔The radiation that exits or leaves the patient's
body and exposes the film
Latent image -ANSWER ✔✔The image contained in the film before it is
processed.
Attenuation -ANSWER ✔✔Absorption of the x-ray beam. These x-rays can either
be totally absorbed within the body, reduced in energy, or scattered outside of the
body.
Scattered radiation -ANSWER ✔✔This type of radiation typically has less energy
than the primary x-ray beam, but it is not as easily controlled and travels in all
directions causing unwanted exposure to the film and to anyone in the room.
, Scatter radiation fog -ANSWER ✔✔The unwanted image exposure caused by
scatter radiation
Image Receptor -ANSWER ✔✔IR
IR system -ANSWER ✔✔consists of the x-ray film and the film holder.
Cassette -ANSWER ✔✔Film holder. Protects the film from damage and exposure
to light during dadiography
Computer Radiography (CR) -ANSWER ✔✔A filmless system where the x-ray
image is produced in digital format using computer technology. The image is
obtained in a phosphor material on a plate inside a closed cassette rather than on a
film in a light-tight cassette.
X-ray room -ANSWER ✔✔This room includes the x-ray equipment, a counter
area, and a protective control booth.
Longitudinal -ANSWER ✔✔Tube motion along the long axis of the table
Transverse -ANSWER ✔✔Tube motion across the table at right angels to the
longitudinal
Vertical -ANSWER ✔✔Tube motion that is up and down, increasing or decreasing
the distance between the tube and the table.
