FLUOROSCOPY COMPREHENSIVE EXAM 2026
QUESTIONS AND ANSWERS GRADED A+
◉ 100erg/gram is equivalent to?. Answer: 1 rad
◉ Fluoro units with AECs or CINE cameras must have physicist
calibration how often. Answer: every year
◉ Which imaging modality has the best resolution. Answer:
Radiograph
◉ Compared to the input phosphor, the image output phosphor is....
Answer: Smaller and brighter
◉ As spot film size increases, what happens to the patient dose?.
Answer: Patient dose increases
◉ Unit used to specify the quality of an X-ray beam. Answer: HVL
◉ cycles per time unit in a TV camera is known as.... Answer:
bandwidth
,◉ types of pick-up tubes. Answer: plumicon, vidicon, orthicon
◉ TV camera element which converts light to an electric signal.
Answer: Pickup
◉ Output intensity is measured in.... Answer: mR or R
◉ Brightness ratio of the periphery to the center of the output
screen is termed:. Answer: Contrast
◉ How is resolving power measured?. Answer: Line pairs per
milimeter
◉ Which factors produce a brighter image at the output phosphor?.
Answer: Flux gain and minification
◉ What type of TV system has all its signals carried through cables?.
Answer: Closed circuit TV
◉ Output intensity of a tube is measured in.... Answer: Miliroentgens
◉ Electronic intensification occurs when.... Answer: Electrons are
moved at high speed from photocathode to output phosphor
, ◉ genetic dose means... Answer: Effects exhibited in future offspring
of persons who have been irradiated
◉ Dose effect curve that radiation protection guides are based on....
Answer: linear nonthreshold curve
◉ A disadvantage of thermoluminescent dosimeters. Answer: No
permanent record is provided
◉ Rem is a unit of. Answer: Absorbed dose equivalent
◉ Rad is the unit of. Answer: Absorbed dose
◉ Half value layer defined. Answer: The thickness of a specified
substance which reduces the exposure rate of the primary beam by
one half
◉ A material placed in the useful primary X-ray beam to absorb
preferentially the less penetrating radiations. Answer: Filter
◉ Most common material used in thermoluminescent dosimeters.
Answer: lithium fluoride
QUESTIONS AND ANSWERS GRADED A+
◉ 100erg/gram is equivalent to?. Answer: 1 rad
◉ Fluoro units with AECs or CINE cameras must have physicist
calibration how often. Answer: every year
◉ Which imaging modality has the best resolution. Answer:
Radiograph
◉ Compared to the input phosphor, the image output phosphor is....
Answer: Smaller and brighter
◉ As spot film size increases, what happens to the patient dose?.
Answer: Patient dose increases
◉ Unit used to specify the quality of an X-ray beam. Answer: HVL
◉ cycles per time unit in a TV camera is known as.... Answer:
bandwidth
,◉ types of pick-up tubes. Answer: plumicon, vidicon, orthicon
◉ TV camera element which converts light to an electric signal.
Answer: Pickup
◉ Output intensity is measured in.... Answer: mR or R
◉ Brightness ratio of the periphery to the center of the output
screen is termed:. Answer: Contrast
◉ How is resolving power measured?. Answer: Line pairs per
milimeter
◉ Which factors produce a brighter image at the output phosphor?.
Answer: Flux gain and minification
◉ What type of TV system has all its signals carried through cables?.
Answer: Closed circuit TV
◉ Output intensity of a tube is measured in.... Answer: Miliroentgens
◉ Electronic intensification occurs when.... Answer: Electrons are
moved at high speed from photocathode to output phosphor
, ◉ genetic dose means... Answer: Effects exhibited in future offspring
of persons who have been irradiated
◉ Dose effect curve that radiation protection guides are based on....
Answer: linear nonthreshold curve
◉ A disadvantage of thermoluminescent dosimeters. Answer: No
permanent record is provided
◉ Rem is a unit of. Answer: Absorbed dose equivalent
◉ Rad is the unit of. Answer: Absorbed dose
◉ Half value layer defined. Answer: The thickness of a specified
substance which reduces the exposure rate of the primary beam by
one half
◉ A material placed in the useful primary X-ray beam to absorb
preferentially the less penetrating radiations. Answer: Filter
◉ Most common material used in thermoluminescent dosimeters.
Answer: lithium fluoride
