Boost your readiness for the ARRT Radiography Registry Exam with this focused Mock Exam 3, tailored for radiologic technologists aiming for 2025 certification. This comprehensive practice test includes 120 expert-verified questions that mirror the exam’s structure, covering essential domains such as patient care, radiation safety, image production, and radiographic procedures. Each question is paired with detailed explanations to clarify concepts, address common pitfalls, and reinforce critical knowledge areas like positioning techniques, exposure factors, and radiation protection protocols. Updated to reflect the 2025 ARRT Radiography content specifications, this mock exam incorporates the latest industry standards and technological advancements in radiography. Ideal for candidates seeking to assess their preparedness and refine their skills, this resource ensures you’re on the path to certification success.
Preview
1. Which of the following is (are) demonstrated in the lateral projection of the
thoracic spine?
1. Intervertebral spaces
2. Apophyseal joints
3. Intervertebral foramina
A. 1 only
B. 2 only
C. 1 and 3 only ✅
D. 1, 2, and 3
Rationale:
In the lateral projection of the thoracic spine, intervertebral disk spaces and
intervertebral foramina are clearly demonstrated. Apophyseal (zygapophyseal) joints
are best visualized in a 70° oblique position.
2. How is source-to-image distance (SID) related to exposure rate and radiographic
density?
A. As SID increases, exposure rate increases and radiographic density increases.
B. As SID increases, exposure rate increases and radiographic density decreases.
C. As SID increases, exposure rate decreases and radiographic density increases.
D. As SID increases, exposure rate decreases and radiographic density decreases. ✅
Rationale:
Increasing SID reduces the intensity of radiation reaching the image receptor,
thereby decreasing both exposure rate and radiographic density according to the
inverse square law.
3. Which of the following can affect radiographic contrast?
1. Processing
2. Pathology
3. OID
A. 1 only
B. 1 and 2 only
C. 1 and 3 only
D. 1, 2, and 3 ✅
Rationale:
Processing (e.g., chemical or digital settings), pathologic conditions (e.g., edema or
pneumothorax), and object-to-image distance (OID) can all influence radiographic
contrast.
thoracic spine?
1. Intervertebral spaces
2. Apophyseal joints
3. Intervertebral foramina
A. 1 only
B. 2 only
C. 1 and 3 only ✅
D. 1, 2, and 3
Rationale:
In the lateral projection of the thoracic spine, intervertebral disk spaces and
intervertebral foramina are clearly demonstrated. Apophyseal (zygapophyseal) joints
are best visualized in a 70° oblique position.
2. How is source-to-image distance (SID) related to exposure rate and radiographic
density?
A. As SID increases, exposure rate increases and radiographic density increases.
B. As SID increases, exposure rate increases and radiographic density decreases.
C. As SID increases, exposure rate decreases and radiographic density increases.
D. As SID increases, exposure rate decreases and radiographic density decreases. ✅
Rationale:
Increasing SID reduces the intensity of radiation reaching the image receptor,
thereby decreasing both exposure rate and radiographic density according to the
inverse square law.
3. Which of the following can affect radiographic contrast?
1. Processing
2. Pathology
3. OID
A. 1 only
B. 1 and 2 only
C. 1 and 3 only
D. 1, 2, and 3 ✅
Rationale:
Processing (e.g., chemical or digital settings), pathologic conditions (e.g., edema or
pneumothorax), and object-to-image distance (OID) can all influence radiographic
contrast.
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