COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
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Question 1. Assuming other exposure factors remain the same, which SID
causes the greatest reduction in x-ray quantity at the IR?
A) 40 inches
B) 48 inches
C) 60 inches
D) 72 inches
Correct Answer: D) 72 inches
Rationale: Increasing the source-to-image distance (SID) reduces the x-ray
quantity at the image receptor due to the inverse square law.
Question 2. Which statement most accurately explains the typical reaction a
patient can expect following the intravenous administration of low-osmolar
iodinated contrast media?
A) You may feel a warm sensation
B) You will experience severe pain
C) You may feel a cold sensation
D) You will have no sensation
Correct Answer: A) You may feel a warm sensation
Rationale: A warm sensation is a common and expected physiological
response to intravenous iodinated contrast media.
Question 3. Where should radiographers clip their radiation monitors when
wearing an apron for fluoroscopy?
A) Inside the lead apron
B) At the collar, outside of the lead apron
,C) On the wrist
D) On the waist, under the apron
Correct Answer: B) At the collar, outside of the lead apron
Rationale: Placing the monitor at the collar outside the apron measures the
highest dose to the unprotected head and neck area.
Question 4. What is the annual occupational effective dose limit for a 43-
year-old radiographer?
A) 10 mSv
B) 20 mSv
C) 50 mSv
D) 100 mSv
Correct Answer: C) 50 mSv
Rationale: The annual occupational effective dose limit is 50 mSv (5 rem) per
year.
Question 5. Hematologic depression is noted on blood tests of a patient who
has had several radiation therapy treatments. What is the most probable
minimum dose that this patient received?
A) 0.1 Gy
B) 0.25 Gy
C) 0.5 Gy
D) 1.0 Gy
Correct Answer: B) 0.25 Gy
Rationale: Hematologic depression is a known effect of radiation exposure
starting at doses around 0.25 Gy.
Question 6. What is the NCRP recommended maximum annual equivalent
dose to the general public for frequent exposure?
,A) 0.1 mSv
B) 1 mSv
C) 5 mSv
D) 10 mSv
Correct Answer: B) 1 mSv
Rationale: The NCRP recommends a maximum annual equivalent dose of 1
mSv for the general public from frequent exposure.
Question 7. A patient with a wound infection caused by MRSA should be
placed under which type of precaution?
A) Airborne
B) Droplet
C) Contact
D) Standard
Correct Answer: C) Contact
Rationale: MRSA is transmitted via direct contact, requiring contact
precautions.
Question 8. What is the proper sequencing of exams if a patient is scheduled
for a BE, IVU, and thyroid uptake and scan on the same day?
A) BE, IVU, thyroid uptake and scan
B) IVU, BE, thyroid uptake and scan
C) Thyroid uptake and scan, IVU, BE
D) IVU, thyroid uptake and scan, BE
Correct Answer: C) Thyroid uptake and scan, IVU, BE
Rationale: The thyroid uptake and scan must be performed first because
iodinated contrast media from the IVU and BE will interfere with the thyroid's
uptake of radioactive iodine.
, Question 9. Which may be effects of fetal irradiation?
A) Prenatal death
B) Childhood and early adult cancers
C) Developmental abnormalities
D) Growth retardation
E) All of the above
Correct Answer: E) All of the above
Rationale: Fetal irradiation can cause all of these effects, depending on the
dose and stage of gestation.
Question 10. If a transformer has a greater number of turns in the secondary
coil than in the primary coil, how will the output voltage be affected?
A) Increased
B) Decreased
C) Unchanged
D) Alternating
Correct Answer: A) Increased
Rationale: A step-up transformer has more turns in the secondary coil, which
increases the output voltage.
Question 11. On a radiograph of a shoulder, the greater tubercle is visualized
in profile. Which projection was taken?
A) AP, internal rotation
B) AP, external rotation
C) AP, neutral rotation
D) Axillary
Correct Answer: B) AP, external rotation