Radiologic Technologist Certification Practice
Examination Newest 2025 – 2026 Questions From
Actual Exams Complete 100 Questions And Correct
Detailed Answers (Verified Answers) |Already
Graded A+||Brand New!!
Content Covered (Most Tested Areas on the Official Exam
Syllabus)
Patient Care and Safety
Radiation Physics and Protection
Radiographic Procedures and Positioning
Image Production and Evaluation
Equipment Operation and Quality Control
Anatomy and Pathology Recognition
1. A radiologic technologist must verify patient identity before performing an
examination. Which method is considered best practice?
A. Asking the patient their room number
B. Asking the patient to state their full name and date of birth
C. Checking the patient’s wristband only
D. Asking a family member to confirm the patient
Correct Answer: B. Asking the patient to state their full name and date of birth
Explanation: Standard patient safety guidelines require two identifiers. The most
reliable method is asking the patient to verbally confirm their full name and date
of birth.
, 2. Which type of radiation interaction is primarily responsible for patient dose
during diagnostic radiography?
A. Photoelectric effect
B. Compton scattering
C. Pair production
D. Coherent scattering
Correct Answer: A. Photoelectric effect
Explanation: The photoelectric effect contributes significantly to patient absorbed
dose and is responsible for image contrast in diagnostic imaging.
3. What is the primary purpose of collimation during radiographic imaging?
A. Increase exposure time
B. Reduce radiation dose and improve image quality
C. Increase film density
D. Enhance scatter production
Correct Answer: B. Reduce radiation dose and improve image quality
Explanation: Collimation restricts the x-ray beam to the area of interest, reducing
patient exposure and scatter radiation, thereby improving image contrast.
4. The ALARA principle stands for:
A. As Low As Reasonably Achievable
B. As Long As Radiation Allows
C. As Limited As Radiation Allows
D. As Large As Radiation Acceptable
Correct Answer: A. As Low As Reasonably Achievable
Explanation: ALARA is the fundamental radiation protection concept requiring
radiation exposures to be kept as low as possible while achieving diagnostic
results.
5. Which device is commonly used to monitor occupational radiation
exposure?
,A. Fluoroscope
B. Thermoluminescent dosimeter
C. Grid
D. Ionization chamber
Correct Answer: B. Thermoluminescent dosimeter
Explanation: TLD badges measure cumulative radiation exposure to workers by
storing energy from radiation and releasing it when heated.
6. Increasing kVp while maintaining mAs generally results in:
A. Increased image contrast
B. Decreased image density
C. Decreased image contrast
D. No change in image appearance
Correct Answer: C. Decreased image contrast
Explanation: Higher kVp produces higher energy photons that penetrate more
uniformly, reducing contrast between tissues.
7. Which projection is commonly used to visualize the patella without
superimposition?
A. AP knee
B. Lateral knee
C. Sunrise projection
D. Tunnel projection
Correct Answer: C. Sunrise projection
Explanation: The sunrise (tangential) projection allows clear visualization of the
patellofemoral joint.
8. What is the primary function of a radiographic grid?
A. Increase beam intensity
B. Absorb scattered radiation
, C. Reduce patient motion
D. Increase focal spot size
Correct Answer: B. Absorb scattered radiation
Explanation: Grids improve image contrast by absorbing scatter radiation before it
reaches the image receptor.
9. Which positioning is commonly used for a chest radiograph to reduce heart
magnification?
A. AP supine
B. AP erect
C. PA erect
D. Lateral decubitus
Correct Answer: C. PA erect
Explanation: The PA projection places the heart closer to the image receptor,
minimizing magnification.
10.Which factor primarily controls radiographic image density?
A. mAs
B. SID
C. Grid ratio
D. Collimation
Correct Answer: A. mAs
Explanation: Milliampere-seconds determine the quantity of x-ray photons
produced and therefore the overall exposure to the image receptor.
11.The central ray for an AP pelvis is directed:
A. 1 inch above the iliac crest
B. 2 inches above the pubic symphysis
C. Midway between ASIS and symphysis pubis
D. At the femoral head
Examination Newest 2025 – 2026 Questions From
Actual Exams Complete 100 Questions And Correct
Detailed Answers (Verified Answers) |Already
Graded A+||Brand New!!
Content Covered (Most Tested Areas on the Official Exam
Syllabus)
Patient Care and Safety
Radiation Physics and Protection
Radiographic Procedures and Positioning
Image Production and Evaluation
Equipment Operation and Quality Control
Anatomy and Pathology Recognition
1. A radiologic technologist must verify patient identity before performing an
examination. Which method is considered best practice?
A. Asking the patient their room number
B. Asking the patient to state their full name and date of birth
C. Checking the patient’s wristband only
D. Asking a family member to confirm the patient
Correct Answer: B. Asking the patient to state their full name and date of birth
Explanation: Standard patient safety guidelines require two identifiers. The most
reliable method is asking the patient to verbally confirm their full name and date
of birth.
, 2. Which type of radiation interaction is primarily responsible for patient dose
during diagnostic radiography?
A. Photoelectric effect
B. Compton scattering
C. Pair production
D. Coherent scattering
Correct Answer: A. Photoelectric effect
Explanation: The photoelectric effect contributes significantly to patient absorbed
dose and is responsible for image contrast in diagnostic imaging.
3. What is the primary purpose of collimation during radiographic imaging?
A. Increase exposure time
B. Reduce radiation dose and improve image quality
C. Increase film density
D. Enhance scatter production
Correct Answer: B. Reduce radiation dose and improve image quality
Explanation: Collimation restricts the x-ray beam to the area of interest, reducing
patient exposure and scatter radiation, thereby improving image contrast.
4. The ALARA principle stands for:
A. As Low As Reasonably Achievable
B. As Long As Radiation Allows
C. As Limited As Radiation Allows
D. As Large As Radiation Acceptable
Correct Answer: A. As Low As Reasonably Achievable
Explanation: ALARA is the fundamental radiation protection concept requiring
radiation exposures to be kept as low as possible while achieving diagnostic
results.
5. Which device is commonly used to monitor occupational radiation
exposure?
,A. Fluoroscope
B. Thermoluminescent dosimeter
C. Grid
D. Ionization chamber
Correct Answer: B. Thermoluminescent dosimeter
Explanation: TLD badges measure cumulative radiation exposure to workers by
storing energy from radiation and releasing it when heated.
6. Increasing kVp while maintaining mAs generally results in:
A. Increased image contrast
B. Decreased image density
C. Decreased image contrast
D. No change in image appearance
Correct Answer: C. Decreased image contrast
Explanation: Higher kVp produces higher energy photons that penetrate more
uniformly, reducing contrast between tissues.
7. Which projection is commonly used to visualize the patella without
superimposition?
A. AP knee
B. Lateral knee
C. Sunrise projection
D. Tunnel projection
Correct Answer: C. Sunrise projection
Explanation: The sunrise (tangential) projection allows clear visualization of the
patellofemoral joint.
8. What is the primary function of a radiographic grid?
A. Increase beam intensity
B. Absorb scattered radiation
, C. Reduce patient motion
D. Increase focal spot size
Correct Answer: B. Absorb scattered radiation
Explanation: Grids improve image contrast by absorbing scatter radiation before it
reaches the image receptor.
9. Which positioning is commonly used for a chest radiograph to reduce heart
magnification?
A. AP supine
B. AP erect
C. PA erect
D. Lateral decubitus
Correct Answer: C. PA erect
Explanation: The PA projection places the heart closer to the image receptor,
minimizing magnification.
10.Which factor primarily controls radiographic image density?
A. mAs
B. SID
C. Grid ratio
D. Collimation
Correct Answer: A. mAs
Explanation: Milliampere-seconds determine the quantity of x-ray photons
produced and therefore the overall exposure to the image receptor.
11.The central ray for an AP pelvis is directed:
A. 1 inch above the iliac crest
B. 2 inches above the pubic symphysis
C. Midway between ASIS and symphysis pubis
D. At the femoral head
