1|Page
California Supervisor and Operator ASRT Exam 2025
— Updated Study Guide, Certification Requirements,
and Practice Test Questions
Prepare for the California Supervisor and Operator ASRT Exam 2025 with the newest study
guide, certification requirements, and official practice tests. Learn how to qualify, apply, and
pass the ASRT Supervisor and Operator certification in California.
• California Supervisor and Operator ASRT exam 2025
• ASRT certification California
• California Supervisor and Operator practice test
What is the major interaction that occurs between x-rays and bone tissues?
a. Compton
b. Coherent
c. Photoelectric
d. transmission - ANSWER-c. Photoelectric
(unit 3) Which pathology requires a decrease in radiographic technique to maintain signal intensity?
a. Ascites
b. Small bowel obstruction
c. Congestive heart failure
d. Osteoporosis - ANSWER-b. Small bowel obstruction
,2|Page
(unit 3) Compton interactions occur between an incident x-ray and
a. Inner shell electron
b. The nucleus
c. The entire atom
d. An outer shell electron - ANSWER-d. An outer shell electron
(unit 3) Increased part thickness without an increase in radiographic technique leads to:
a. Decreased signal intensity and decreased compton interactions
b. Decreased signal intensity and increased compton interactions
c. Increased signal intensity and decreased compton interactions
d. Increased signal intensity and increased compton interactions - ANSWER-b. Decreased signal intensity
and increased compton interactions
(unit 3) What major interaction occurs between x-rays and adipose (fat) tissue?
a. Compton***
b. Coherent
c. Photoelectric
d. Transmission - ANSWER-a. Compton
(unit 3) Air is sometimes paired with barium or other types of contrast for certain radiographic studies.
In this case, air is termed:
a. Negative contrast
b. Positive contrast
c. IV contrast
d. Oral contrast - ANSWER-a. Negative contrast
(unit 3) Noise can be reduced by: 1) increasing collimation. 2) using a grid. 3) decreasing technique:
a. 1 and 2
b. 1 and 3
,3|Page
c. 2 and 3
d. 1, 2 and 3 - ANSWER-a. 1 and 2
(unit 3) This scatter reduction technique reduces patient exposure when the technique is adjusted to
compensate.
a. Collimation
b. Grid use
c. Low kvp technique
d. High mAs technique - ANSWER-a. Collimation
(unit 4) The main reason a filter is added to the primary beam is to
a. Decrease patient dose
b. Decrease contrast
c. Increase signal strength
d. Increase wavelength - ANSWER-a. Decrease patient dose
(unit 4) One side of the x-ray beam is stronger because some of the radiation created in the x-ray tube is
absorbed by the:
a. Rotor
b. Cathode
c. Anode
d. stator - ANSWER-c. Anode
(unit 4) Which x-ray generator is the most efficient and provides the greatest signal intensity based on
the same technical factors?
a. Single phase
b. High frequency
c. 3-phase 6-pulse
d. 3-phase 12-pulse - ANSWER-b. High frequency
, 4|Page
(unit 4) Using collimation affects the primary signal by:
a. Increasing contrast and increasing signal intensity
b. Increasing contrast and decreasing signal intensity
c. Decreasing contrast and increasing signal intensity
d. Decreasing contrast and decreasing signal intensity - ANSWER-b. Increasing contrast and decreasing
signal intensity
(unit 4) Which of the following reduce the production of scattered radiation? 1) reduced kVp. 2) anti-
scatter grid. 3) increased collimation
a. 1 and 2
b. 1 and 3
c. 2 and 3
d. 1, 2 and 3 - ANSWER-d. 1, 2 and 3
(unit 4) The major disadvantage of using a grid during a radiographic procedure is:
a. Increased patient dose
b. Increased motion risk
c. Decreased image contrast
d. Increased scatter - ANSWER-a. Increased patient dose
(unit 4) Which of the following grid ratios removes the greatest amount of scatter from the primary
beam?
a. 4:1
b. 8:1
c. 10:1
d. 12:1 - ANSWER-d. 12:1
(unit 4) The relationship of a grid's height to the thickness of the interspace material is referred to as the
grid:
a. Ratio
California Supervisor and Operator ASRT Exam 2025
— Updated Study Guide, Certification Requirements,
and Practice Test Questions
Prepare for the California Supervisor and Operator ASRT Exam 2025 with the newest study
guide, certification requirements, and official practice tests. Learn how to qualify, apply, and
pass the ASRT Supervisor and Operator certification in California.
• California Supervisor and Operator ASRT exam 2025
• ASRT certification California
• California Supervisor and Operator practice test
What is the major interaction that occurs between x-rays and bone tissues?
a. Compton
b. Coherent
c. Photoelectric
d. transmission - ANSWER-c. Photoelectric
(unit 3) Which pathology requires a decrease in radiographic technique to maintain signal intensity?
a. Ascites
b. Small bowel obstruction
c. Congestive heart failure
d. Osteoporosis - ANSWER-b. Small bowel obstruction
,2|Page
(unit 3) Compton interactions occur between an incident x-ray and
a. Inner shell electron
b. The nucleus
c. The entire atom
d. An outer shell electron - ANSWER-d. An outer shell electron
(unit 3) Increased part thickness without an increase in radiographic technique leads to:
a. Decreased signal intensity and decreased compton interactions
b. Decreased signal intensity and increased compton interactions
c. Increased signal intensity and decreased compton interactions
d. Increased signal intensity and increased compton interactions - ANSWER-b. Decreased signal intensity
and increased compton interactions
(unit 3) What major interaction occurs between x-rays and adipose (fat) tissue?
a. Compton***
b. Coherent
c. Photoelectric
d. Transmission - ANSWER-a. Compton
(unit 3) Air is sometimes paired with barium or other types of contrast for certain radiographic studies.
In this case, air is termed:
a. Negative contrast
b. Positive contrast
c. IV contrast
d. Oral contrast - ANSWER-a. Negative contrast
(unit 3) Noise can be reduced by: 1) increasing collimation. 2) using a grid. 3) decreasing technique:
a. 1 and 2
b. 1 and 3
,3|Page
c. 2 and 3
d. 1, 2 and 3 - ANSWER-a. 1 and 2
(unit 3) This scatter reduction technique reduces patient exposure when the technique is adjusted to
compensate.
a. Collimation
b. Grid use
c. Low kvp technique
d. High mAs technique - ANSWER-a. Collimation
(unit 4) The main reason a filter is added to the primary beam is to
a. Decrease patient dose
b. Decrease contrast
c. Increase signal strength
d. Increase wavelength - ANSWER-a. Decrease patient dose
(unit 4) One side of the x-ray beam is stronger because some of the radiation created in the x-ray tube is
absorbed by the:
a. Rotor
b. Cathode
c. Anode
d. stator - ANSWER-c. Anode
(unit 4) Which x-ray generator is the most efficient and provides the greatest signal intensity based on
the same technical factors?
a. Single phase
b. High frequency
c. 3-phase 6-pulse
d. 3-phase 12-pulse - ANSWER-b. High frequency
, 4|Page
(unit 4) Using collimation affects the primary signal by:
a. Increasing contrast and increasing signal intensity
b. Increasing contrast and decreasing signal intensity
c. Decreasing contrast and increasing signal intensity
d. Decreasing contrast and decreasing signal intensity - ANSWER-b. Increasing contrast and decreasing
signal intensity
(unit 4) Which of the following reduce the production of scattered radiation? 1) reduced kVp. 2) anti-
scatter grid. 3) increased collimation
a. 1 and 2
b. 1 and 3
c. 2 and 3
d. 1, 2 and 3 - ANSWER-d. 1, 2 and 3
(unit 4) The major disadvantage of using a grid during a radiographic procedure is:
a. Increased patient dose
b. Increased motion risk
c. Decreased image contrast
d. Increased scatter - ANSWER-a. Increased patient dose
(unit 4) Which of the following grid ratios removes the greatest amount of scatter from the primary
beam?
a. 4:1
b. 8:1
c. 10:1
d. 12:1 - ANSWER-d. 12:1
(unit 4) The relationship of a grid's height to the thickness of the interspace material is referred to as the
grid:
a. Ratio
