Texas Radiologic Technologist Licensing
Exam Practice Test Questions And
Correct Answers (Verified Answers) Plus
Rationales 2025 Q&A | Instant
Download Pdf
1. What is the purpose of the collimator in radiographic imaging?
A. To increase patient dose
B. To restrict the size of the x-ray beam
C. To enhance contrast resolution
D. To control exposure time
Collimators restrict the x-ray beam to the area of interest, reducing scatter
radiation and unnecessary exposure.
2. The unit used to measure radiation dose to the patient is:
A. Roentgen
B. Becquerel
C. Gray (Gy)
D. Sievert (Sv)
The Gray (Gy) measures absorbed dose, which is the amount of radiation
energy absorbed per unit mass.
, 3. Which of the following is considered a stochastic effect of radiation
exposure?
A. Skin erythema
B. Cancer
C. Cataract formation
D. Radiation burns
Stochastic effects are random and include cancer and genetic mutations
with no threshold dose.
4. The primary advantage of digital radiography over film-based imaging
is:
A. Reduced patient cooperation
B. Increased spatial resolution
C. Post-processing image manipulation
D. Higher radiation dose
Digital systems allow for image enhancement, annotation, and adjustment
after acquisition, improving diagnostic accuracy.
5. In fluoroscopy, the exposure rate at the tabletop should not exceed:
A. 5 R/min
B. 8 R/min
C. 10 R/min
D. 15 R/min
The FDA limits the exposure rate during fluoroscopy to 10 R/min under
normal operation.
6. The law that protects patient confidentiality in medical imaging is:
A. OSHA
B. HIPAA
, C. FDA
D. NRC
HIPAA (Health Insurance Portability and Accountability Act) governs
patient privacy and medical record confidentiality.
7. The radiographic contrast is primarily affected by:
A. mA
B. Exposure time
C. SID
D. kVp
kVp (kilovolt peak) controls the penetrating ability of the beam and
directly influences image contrast.
8. Which interaction with matter is most responsible for contrast in
diagnostic radiography?
A. Compton scattering
B. Pair production
C. Photoelectric effect
D. Coherent scattering
The photoelectric effect is more likely to occur in denser materials and
produces high image contrast.
9. The best way to reduce occupational exposure is:
A. Wearing gloves
B. Increasing distance from the source
C. Increasing mA
D. Repeating exposures
Following the inverse square law, increasing distance significantly reduces
exposure.
Exam Practice Test Questions And
Correct Answers (Verified Answers) Plus
Rationales 2025 Q&A | Instant
Download Pdf
1. What is the purpose of the collimator in radiographic imaging?
A. To increase patient dose
B. To restrict the size of the x-ray beam
C. To enhance contrast resolution
D. To control exposure time
Collimators restrict the x-ray beam to the area of interest, reducing scatter
radiation and unnecessary exposure.
2. The unit used to measure radiation dose to the patient is:
A. Roentgen
B. Becquerel
C. Gray (Gy)
D. Sievert (Sv)
The Gray (Gy) measures absorbed dose, which is the amount of radiation
energy absorbed per unit mass.
, 3. Which of the following is considered a stochastic effect of radiation
exposure?
A. Skin erythema
B. Cancer
C. Cataract formation
D. Radiation burns
Stochastic effects are random and include cancer and genetic mutations
with no threshold dose.
4. The primary advantage of digital radiography over film-based imaging
is:
A. Reduced patient cooperation
B. Increased spatial resolution
C. Post-processing image manipulation
D. Higher radiation dose
Digital systems allow for image enhancement, annotation, and adjustment
after acquisition, improving diagnostic accuracy.
5. In fluoroscopy, the exposure rate at the tabletop should not exceed:
A. 5 R/min
B. 8 R/min
C. 10 R/min
D. 15 R/min
The FDA limits the exposure rate during fluoroscopy to 10 R/min under
normal operation.
6. The law that protects patient confidentiality in medical imaging is:
A. OSHA
B. HIPAA
, C. FDA
D. NRC
HIPAA (Health Insurance Portability and Accountability Act) governs
patient privacy and medical record confidentiality.
7. The radiographic contrast is primarily affected by:
A. mA
B. Exposure time
C. SID
D. kVp
kVp (kilovolt peak) controls the penetrating ability of the beam and
directly influences image contrast.
8. Which interaction with matter is most responsible for contrast in
diagnostic radiography?
A. Compton scattering
B. Pair production
C. Photoelectric effect
D. Coherent scattering
The photoelectric effect is more likely to occur in denser materials and
produces high image contrast.
9. The best way to reduce occupational exposure is:
A. Wearing gloves
B. Increasing distance from the source
C. Increasing mA
D. Repeating exposures
Following the inverse square law, increasing distance significantly reduces
exposure.
