FLUOROSCOPY ARRT EXAM AND STUDY GUIDE
NEWEST 2026 TEST BANK| COMPLETE 550 REAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) GRADED A+| ARRT
FLUOROSCOPY EXAM PREP 2026 (MOST RECENT!!)
1. What is the primary source of radiation exposure to the
patient during fluoroscopy?
A. Primary beam
B. Scatter radiation
C. Leakage radiation
D. Characteristic radiation
Answer: A – Primary beam
Rationale: The patient is exposed mainly to the primary x-ray
beam. Scatter and leakage are secondary.
2. Which interaction produces the greatest amount of scatter
radiation in diagnostic fluoroscopy?
1
,A. Photoelectric effect
B. Compton scattering
C. Coherent scattering
D. Pair production
Answer: B – Compton scattering
Rationale: Compton scatter is the dominant interaction in soft tissue
at typical fluoroscopic kVp (70–120), causing fog and radiation
exposure to staff.
3. The heel effect is most pronounced on which side of the x-
ray tube?
A. Cathode side
B. Anode side
C. Central ray
D. Periphery
Answer: B – Anode side
2
,Rationale: The anode heel effect reduces intensity on the anode side
due to absorption in the target.
4. What is the purpose of a grid in fluoroscopy?
A. Increase image contrast
B. Reduce patient dose
C. Increase scatter production
D. Eliminate motion artifact
Answer: A – Increase image contrast
Rationale: A grid absorbs scatter before it reaches the image
receptor, improving contrast but increasing patient dose.
5. The automatic brightness control (ABC) adjusts which
parameter primarily?
A. Focal spot size
B. kVp and/or mA
C. Collimation
D. SID
3
, Answer: B – kVp and/or mA
Rationale: ABC maintains constant image brightness by varying
kVp and mA based on patient thickness.
6. What is the typical kilovoltage range for fluoroscopy?
A. 40–60 kVp
B. 70–120 kVp
C. 120–150 kVp
D. 150–200 kVp
Answer: B – 70–120 kVp
*Rationale: Higher kVp (70–120) reduces patient dose and
improves penetration for real-time imaging.*
7. Which device converts x-rays into light in an image
intensifier?
A. Photocathode
B. Input phosphor
C. Output phosphor
4
NEWEST 2026 TEST BANK| COMPLETE 550 REAL EXAM
QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) GRADED A+| ARRT
FLUOROSCOPY EXAM PREP 2026 (MOST RECENT!!)
1. What is the primary source of radiation exposure to the
patient during fluoroscopy?
A. Primary beam
B. Scatter radiation
C. Leakage radiation
D. Characteristic radiation
Answer: A – Primary beam
Rationale: The patient is exposed mainly to the primary x-ray
beam. Scatter and leakage are secondary.
2. Which interaction produces the greatest amount of scatter
radiation in diagnostic fluoroscopy?
1
,A. Photoelectric effect
B. Compton scattering
C. Coherent scattering
D. Pair production
Answer: B – Compton scattering
Rationale: Compton scatter is the dominant interaction in soft tissue
at typical fluoroscopic kVp (70–120), causing fog and radiation
exposure to staff.
3. The heel effect is most pronounced on which side of the x-
ray tube?
A. Cathode side
B. Anode side
C. Central ray
D. Periphery
Answer: B – Anode side
2
,Rationale: The anode heel effect reduces intensity on the anode side
due to absorption in the target.
4. What is the purpose of a grid in fluoroscopy?
A. Increase image contrast
B. Reduce patient dose
C. Increase scatter production
D. Eliminate motion artifact
Answer: A – Increase image contrast
Rationale: A grid absorbs scatter before it reaches the image
receptor, improving contrast but increasing patient dose.
5. The automatic brightness control (ABC) adjusts which
parameter primarily?
A. Focal spot size
B. kVp and/or mA
C. Collimation
D. SID
3
, Answer: B – kVp and/or mA
Rationale: ABC maintains constant image brightness by varying
kVp and mA based on patient thickness.
6. What is the typical kilovoltage range for fluoroscopy?
A. 40–60 kVp
B. 70–120 kVp
C. 120–150 kVp
D. 150–200 kVp
Answer: B – 70–120 kVp
*Rationale: Higher kVp (70–120) reduces patient dose and
improves penetration for real-time imaging.*
7. Which device converts x-rays into light in an image
intensifier?
A. Photocathode
B. Input phosphor
C. Output phosphor
4
