NORTH CAROLINA RADIOLOGIC TECHNOLOGIST EXAM – PRACTICE QUESTIONS AND CORRECT
ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF.
CORE DOMAINS
• Patient Care and Education
• Radiation Protection and Safety
• Image Acquisition and Evaluation
• Radiographic Procedures and Positioning
• Equipment Operation and Quality Assurance
• Legal Ethics and North Carolina Regulations
INTRODUCTION
The purpose of this comprehensive assessment is to evaluate the competency and readiness of candidates
seeking licensure as a Radiologic Technologist in North Carolina. This exam assesses
foundational scientific
principles, technical proficiency in imaging, and rigorous safety protocols. The structure utilizes a
mix of
multiple-choice questions and complex clinical scenarios to mirror real-world hospital
environments.
By focusing on critical thinking and ethical decision-making, this assessment ensures that
practitioners
can provide high-quality diagnostic imaging while minimizing radiation risks to patients and staff.
SECTION ONE: QUESTIONS 1–100
1. Which of the following is the most effective way to reduce patient dose during a radiographic examination?
A. Increasing the mAs
B. Using a low kVp technique
,C. Decreasing filtration
🟢 D. Collimating to the area of interest
🔴 RATIONALE: Collimation reduces the volume of tissue irradiated, which directly decreases the total dose to
the patient and reduces scatter radiation.
2. A patient experiences a sudden onset of shortness of breath and swelling of the throat following the
administration of iodinated contrast media. What is the most likely cause?
A. Hypovolemic shock
🟢 B. Anaphylactic reaction
C. Vasovagal response
D. Cardiogenic shock
🔴 RATIONALE: Severe allergic reactions to contrast media, known as anaphylaxis, often present with
respiratory distress and laryngeal edema.
3. In the state of North Carolina, who is responsible for ensuring that all x-ray equipment is registered and
inspected according to state regulations?
🟢 A. The facility owner or Radiation Protection Supervisor
B. The staff radiologic technologist
C. The referring physician
D. The equipment manufacturer
🔴 RATIONALE: North Carolina regulatory standards place the legal burden of equipment registration and
compliance on the facility owner or their designated supervisor.
4. Which of the following technical factor adjustments will result in the greatest decrease in exposure to the
Image Receptor (IR)?
,A. Increasing kVp by 15%
B. Decreasing SID from 72 inches to 40 inches
🟢 C. Halving the mAs
D. Removing a grid
🔴 RATIONALE: Exposure is directly proportional to mAs; reducing mAs by 50% results in a 50% reduction in
the quantity of photons reaching the IR.
5. Which bone is best demonstrated in the tangential (Settegast) projection?
A. Calcaneus
B. Scapula
🟢 C. Patella
D. Talus
🔴 RATIONALE: The Settegast method is a tangential projection specifically designed to visualize the patella
and the patellofemoral joint space.
6. What is the primary purpose of adding filtration to the x-ray beam?
🟢 A. To remove low-energy photons from the beam
B. To increase the quantity of x-rays
C. To decrease the average energy of the beam
D. To shorten the wavelength of all photons
🔴 RATIONALE: Filtration "hardens" the beam by absorbing low-energy (soft) x-rays that would otherwise be
absorbed by the patient's skin without contributing to the image.
7. A technologist is performing a portable chest x-ray on a patient in contact precautions. Which of the
following is the correct protocol?
, A. Use the same lead apron for all patients in the ward
🟢 B. Clean the x-ray machine with approved disinfectant after leaving the room
C. Wear only a mask and gloves
D. Ask the patient to hold the IR without a cover
🔴 RATIONALE: Infection control protocols require that equipment used in isolation rooms be thoroughly
decontaminated to prevent cross-contamination.
8. When performing an AP projection of the humerus, how should the epicondyles be positioned?
A. At a 45-degree angle to the IR
🟢 B. Parallel to the IR
C. Perpendicular to the IR
D. Internally rotated 90 degrees
🔴 RATIONALE: For an AP humerus, the epicondyles must be parallel to the IR to ensure the humerus is in a
true anatomical position without rotation.
9. Which of the following represents the annual occupational effective dose limit for a radiologic
technologist?
A. 1 mSv
B. 5 mSv
🟢 C. 50 mSv
D. 150 mSv
🔴 RATIONALE: According to NCRP guidelines, the annual occupational effective dose limit is 50 mSv (5 rem)
to prevent deterministic and stochastic effects.
10. The "line-focus principle" is used in x-ray tube design to:
ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A | INSTANT DOWNLOAD PDF.
CORE DOMAINS
• Patient Care and Education
• Radiation Protection and Safety
• Image Acquisition and Evaluation
• Radiographic Procedures and Positioning
• Equipment Operation and Quality Assurance
• Legal Ethics and North Carolina Regulations
INTRODUCTION
The purpose of this comprehensive assessment is to evaluate the competency and readiness of candidates
seeking licensure as a Radiologic Technologist in North Carolina. This exam assesses
foundational scientific
principles, technical proficiency in imaging, and rigorous safety protocols. The structure utilizes a
mix of
multiple-choice questions and complex clinical scenarios to mirror real-world hospital
environments.
By focusing on critical thinking and ethical decision-making, this assessment ensures that
practitioners
can provide high-quality diagnostic imaging while minimizing radiation risks to patients and staff.
SECTION ONE: QUESTIONS 1–100
1. Which of the following is the most effective way to reduce patient dose during a radiographic examination?
A. Increasing the mAs
B. Using a low kVp technique
,C. Decreasing filtration
🟢 D. Collimating to the area of interest
🔴 RATIONALE: Collimation reduces the volume of tissue irradiated, which directly decreases the total dose to
the patient and reduces scatter radiation.
2. A patient experiences a sudden onset of shortness of breath and swelling of the throat following the
administration of iodinated contrast media. What is the most likely cause?
A. Hypovolemic shock
🟢 B. Anaphylactic reaction
C. Vasovagal response
D. Cardiogenic shock
🔴 RATIONALE: Severe allergic reactions to contrast media, known as anaphylaxis, often present with
respiratory distress and laryngeal edema.
3. In the state of North Carolina, who is responsible for ensuring that all x-ray equipment is registered and
inspected according to state regulations?
🟢 A. The facility owner or Radiation Protection Supervisor
B. The staff radiologic technologist
C. The referring physician
D. The equipment manufacturer
🔴 RATIONALE: North Carolina regulatory standards place the legal burden of equipment registration and
compliance on the facility owner or their designated supervisor.
4. Which of the following technical factor adjustments will result in the greatest decrease in exposure to the
Image Receptor (IR)?
,A. Increasing kVp by 15%
B. Decreasing SID from 72 inches to 40 inches
🟢 C. Halving the mAs
D. Removing a grid
🔴 RATIONALE: Exposure is directly proportional to mAs; reducing mAs by 50% results in a 50% reduction in
the quantity of photons reaching the IR.
5. Which bone is best demonstrated in the tangential (Settegast) projection?
A. Calcaneus
B. Scapula
🟢 C. Patella
D. Talus
🔴 RATIONALE: The Settegast method is a tangential projection specifically designed to visualize the patella
and the patellofemoral joint space.
6. What is the primary purpose of adding filtration to the x-ray beam?
🟢 A. To remove low-energy photons from the beam
B. To increase the quantity of x-rays
C. To decrease the average energy of the beam
D. To shorten the wavelength of all photons
🔴 RATIONALE: Filtration "hardens" the beam by absorbing low-energy (soft) x-rays that would otherwise be
absorbed by the patient's skin without contributing to the image.
7. A technologist is performing a portable chest x-ray on a patient in contact precautions. Which of the
following is the correct protocol?
, A. Use the same lead apron for all patients in the ward
🟢 B. Clean the x-ray machine with approved disinfectant after leaving the room
C. Wear only a mask and gloves
D. Ask the patient to hold the IR without a cover
🔴 RATIONALE: Infection control protocols require that equipment used in isolation rooms be thoroughly
decontaminated to prevent cross-contamination.
8. When performing an AP projection of the humerus, how should the epicondyles be positioned?
A. At a 45-degree angle to the IR
🟢 B. Parallel to the IR
C. Perpendicular to the IR
D. Internally rotated 90 degrees
🔴 RATIONALE: For an AP humerus, the epicondyles must be parallel to the IR to ensure the humerus is in a
true anatomical position without rotation.
9. Which of the following represents the annual occupational effective dose limit for a radiologic
technologist?
A. 1 mSv
B. 5 mSv
🟢 C. 50 mSv
D. 150 mSv
🔴 RATIONALE: According to NCRP guidelines, the annual occupational effective dose limit is 50 mSv (5 rem)
to prevent deterministic and stochastic effects.
10. The "line-focus principle" is used in x-ray tube design to:
