RTE 1000 Final Exam UPDATED ACTUAL
Questions and CORRECT Answers
Attentuation - CORRECT ANSWER - The process by which a beam of x-ray photons is
altered as it passes through matter
Remnant Radiation - CORRECT ANSWER - All radiation exiting the patient during
exposure and ultimately striking the receptor
List 4 Requirements that are needed for an X-ray production - CORRECT ANSWER - 1.
Vacuum 2. Source of Electrons 3. Target for electrons 4. High Voltage
The component of x ray tube that controls the size and shape of the x ray exposure field is the is
the - CORRECT ANSWER - Collimator
ALARA - CORRECT ANSWER - As Low As Reasonably Achievable
How does the use of grids affect the contrast in radiograph? - CORRECT ANSWER - The
use of grids increase contrast
Grids - CORRECT ANSWER - lead strips that absorb 90% scatter radiation (you would
need to increase technique because part of the useful beams get absorbed)
Radiolucent - CORRECT ANSWER - materials allow x-ray photons to pass through easily
(low radiation)
Radiopaque - CORRECT ANSWER - materials that do not permit the passage of x-rays
(high radiation)
, Kilovoltage peak (kVp) - CORRECT ANSWER - Highest voltage of x-ray tube used
during an exposure
*CONTROLS QUALITY*
*CONTROLS ENERGY OF THE BEAM*
*CONTROLS CONTRAST*
What happens when kVp is high? - CORRECT ANSWER - Scatter=increases
Contrast-decreases
Source-to-image receptor distance (SID) - CORRECT ANSWER - x-rays diverge or
spread as they exit the tube
-closer or farther from a source you either
decrease or increase
the interaction of x-rays with matter than constitutes the greatest hazard to patients in diagnostic
radiography is - CORRECT ANSWER - Photoelectric Effect
the unit used to measure the amount of energy absorbed in any medium is - CORRECT
ANSWER - Radiation Absorbed Dose (RAD)
-SI unit= gray
The characteristics that determine the sensitivity of a cell to radiation are: - CORRECT
ANSWER - -Age (younger cells)
-Differentiation (less)
-High Metabolic Rate (more energy)
-High Mitotic Rate (rapidly dividing)
Questions and CORRECT Answers
Attentuation - CORRECT ANSWER - The process by which a beam of x-ray photons is
altered as it passes through matter
Remnant Radiation - CORRECT ANSWER - All radiation exiting the patient during
exposure and ultimately striking the receptor
List 4 Requirements that are needed for an X-ray production - CORRECT ANSWER - 1.
Vacuum 2. Source of Electrons 3. Target for electrons 4. High Voltage
The component of x ray tube that controls the size and shape of the x ray exposure field is the is
the - CORRECT ANSWER - Collimator
ALARA - CORRECT ANSWER - As Low As Reasonably Achievable
How does the use of grids affect the contrast in radiograph? - CORRECT ANSWER - The
use of grids increase contrast
Grids - CORRECT ANSWER - lead strips that absorb 90% scatter radiation (you would
need to increase technique because part of the useful beams get absorbed)
Radiolucent - CORRECT ANSWER - materials allow x-ray photons to pass through easily
(low radiation)
Radiopaque - CORRECT ANSWER - materials that do not permit the passage of x-rays
(high radiation)
, Kilovoltage peak (kVp) - CORRECT ANSWER - Highest voltage of x-ray tube used
during an exposure
*CONTROLS QUALITY*
*CONTROLS ENERGY OF THE BEAM*
*CONTROLS CONTRAST*
What happens when kVp is high? - CORRECT ANSWER - Scatter=increases
Contrast-decreases
Source-to-image receptor distance (SID) - CORRECT ANSWER - x-rays diverge or
spread as they exit the tube
-closer or farther from a source you either
decrease or increase
the interaction of x-rays with matter than constitutes the greatest hazard to patients in diagnostic
radiography is - CORRECT ANSWER - Photoelectric Effect
the unit used to measure the amount of energy absorbed in any medium is - CORRECT
ANSWER - Radiation Absorbed Dose (RAD)
-SI unit= gray
The characteristics that determine the sensitivity of a cell to radiation are: - CORRECT
ANSWER - -Age (younger cells)
-Differentiation (less)
-High Metabolic Rate (more energy)
-High Mitotic Rate (rapidly dividing)
