ARRT Registry Practice Test 1
Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
Which of the following is a characteristic of characteristic radiation?
A. Produced by scatter
✔✔B. Produced when an inner-shell electron is ejected and replaced
C. Does not depend on target material
D. Always low energy
What is the typical angle of the anode in diagnostic x-ray tubes?
A. 5–10 degrees
B. 20–30 degrees
✔✔C. 12–17 degrees
D. 25–35 degrees
Which artifact is caused by patient motion?
A. Quantum mottle
✔✔B. Blurring
1
,C. Fog
D. Grid lines
The exposure factor primarily controlling radiographic contrast in film-screen radiography is:
A. mAs
B. SID
✔✔C. kVp
D. Grid ratio
The main reason for using a high-speed image receptor is to:
A. Increase contrast
✔✔B. Reduce patient dose
C. Reduce magnification
D. Increase SID
Which structure is best visualized on an AP projection of the cervical spine?
A. Spinous processes
B. Occipital bone
2
,✔✔C. Vertebral bodies
D. Mandible
Which x-ray interaction contributes most to patient dose in soft tissue?
A. Coherent scattering
✔✔B. Photoelectric effect
C. Pair production
D. Compton scattering
Which term describes the effective focal spot in radiography?
A. Cathode size
✔✔B. Projected area of the anode focal spot
C. Anode angle only
D. Tube housing size
Which of the following is true about digital detectors compared to film?
A. Have lower contrast resolution
✔✔B. Require less exposure to produce an image
3
, C. Cannot adjust post-processing
D. Cannot display soft tissue differences
Which of the following is a type of protective barrier in radiology?
A. Collimator
B. Grid
✔✔C. Lead wall
D. Tube housing
Which of the following is the primary purpose of a grid in radiography?
A. Reduce patient dose
✔✔B. Reduce scatter radiation reaching the image receptor
C. Increase tube output
D. Improve patient positioning
A patient is having a chest x-ray in PA projection. How should the patient be positioned?
A. Lying on the left side
✔✔B. Standing facing the image receptor with chest against it
4
Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
Which of the following is a characteristic of characteristic radiation?
A. Produced by scatter
✔✔B. Produced when an inner-shell electron is ejected and replaced
C. Does not depend on target material
D. Always low energy
What is the typical angle of the anode in diagnostic x-ray tubes?
A. 5–10 degrees
B. 20–30 degrees
✔✔C. 12–17 degrees
D. 25–35 degrees
Which artifact is caused by patient motion?
A. Quantum mottle
✔✔B. Blurring
1
,C. Fog
D. Grid lines
The exposure factor primarily controlling radiographic contrast in film-screen radiography is:
A. mAs
B. SID
✔✔C. kVp
D. Grid ratio
The main reason for using a high-speed image receptor is to:
A. Increase contrast
✔✔B. Reduce patient dose
C. Reduce magnification
D. Increase SID
Which structure is best visualized on an AP projection of the cervical spine?
A. Spinous processes
B. Occipital bone
2
,✔✔C. Vertebral bodies
D. Mandible
Which x-ray interaction contributes most to patient dose in soft tissue?
A. Coherent scattering
✔✔B. Photoelectric effect
C. Pair production
D. Compton scattering
Which term describes the effective focal spot in radiography?
A. Cathode size
✔✔B. Projected area of the anode focal spot
C. Anode angle only
D. Tube housing size
Which of the following is true about digital detectors compared to film?
A. Have lower contrast resolution
✔✔B. Require less exposure to produce an image
3
, C. Cannot adjust post-processing
D. Cannot display soft tissue differences
Which of the following is a type of protective barrier in radiology?
A. Collimator
B. Grid
✔✔C. Lead wall
D. Tube housing
Which of the following is the primary purpose of a grid in radiography?
A. Reduce patient dose
✔✔B. Reduce scatter radiation reaching the image receptor
C. Increase tube output
D. Improve patient positioning
A patient is having a chest x-ray in PA projection. How should the patient be positioned?
A. Lying on the left side
✔✔B. Standing facing the image receptor with chest against it
4
