FLUOROSCOPY ACTUAL EXAM PAPER
2026 QUESTIONS WITH ANSWERS
GRADED A+
◍ -What does Dynamic means:.
Answer: -Always active or changing.-Having or showing a lot of energy.-Of
or relating to energy, motion, or physical force.
◍ Fluoroscopy allows for?.
Answer: -Imaging of the movement of internal structures. Can visualize
function and motion in real time.-Commonly used for GI, vascular, and
urinary studies, ect.-This often requires the use of contrast media.
◍ When and by whom was fluoroscopy invented?.
Answer: -Thomas Edison.-1896
◍ What is the typical X-ray tube current in fluoroscopy?.
Answer: -5 mA-Can range from .5 to 5 mA-Compare this to a radiograph
which can range from 50-1200 mA.
◍ What is the primary purpose of an image intensifier in fluoroscopy?.
Answer: To increase image brightness and improve visual acuity.
◍ They used to use (blank) screens.
Answer: "Fluoroscopic" screens
◍ Used to require (blank) minutes of dark adaptation..
Answer: "15" minutes of dark adaptation
◍ What are the components of an image intensifier?.
Answer: Input phosphor, photocathode, electrostatic lenses, and output
phosphor.
◍ (blank) used for night or dim vision have reduced visual acuity.
, Answer: Rods
◍ (blank) are used for day vision.
Answer: Cones
◍ The (Blank) receives the x-ray beam during fluoroscopy.
Answer: Image Intensifier (ii).
◍ X-rays that exit the patient are (blank) on the ii.
Answer: Incident
◍ The ii converts the x-rays into (blank).
Answer: High intensity visible light image.
◍ What material is the input phosphor made of?.
Answer: Cesium iodide (CsI).
◍ The ii exists within a (blank) to protect and support it..
Answer: Tube-glass or metal-housed within a metal structure.
◍ What is flux gain in fluoroscopy?.
Answer: The ratio of the number of output light photons to the number of
input x-ray photons.
◍ X-rays are (blank) through the glass envelope.
Answer: Transmitted
◍ They (x-rays) interact with the (blank).
Answer: Input phosphor (cesium iodide)
◍ How is brightness gain calculated?.
Answer: Brightness gain = minification gain × flux gain.
◍ What is the formula for minification gain?.
Answer: Minification gain = (d1/d0)², where d1 is the diameter of the output
phosphor and d0 is the diameter of the input phosphor.
◍ What is the conversion factor in fluoroscopy?.
Answer: Conversion factor = Output phosphor illumination (cd/m²) / input
exposure rate (mGya/s).
, ◍ What is the typical kVp range for common fluoroscopic examinations?.
Answer: Approximately 70-120 kVp, depending on the examination.
◍ What is the role of the LED monitor in fluoroscopy?.
Answer: To display the electronic signal converted from the light signal of
the output phosphor.
◍ What is modulation in medical imaging?.
Answer: A change in a quantity or signal in response to another quantity or
signal.
◍ The energy is converted to (blank).
Answer: Visible light
◍ What is the frame rate for video monitoring in fluoroscopy?.
Answer: 30 frames per second.
◍ The light intensity emitted by the input phosphor (cesium iodide) is equal to
the intensity of the (blank).
Answer: Exit radiation
◍ What does magnification mode improve in fluoroscopy?.
Answer: Spatial resolution and contrast resolution.
◍ This light then interacts with the (blank).
Answer: Photocathode
◍ The photocathode is composed of (blank).
Answer: Cesium and Antimony
◍ These compounds emit (blank).
Answer: Electrons
◍ The process is called (blank).
Answer: Photoemission
◍ What is automatic brightness stabilization (ABS)?.
Answer: A system that measures the input exposure rate to the
image-intensifier tube.
2026 QUESTIONS WITH ANSWERS
GRADED A+
◍ -What does Dynamic means:.
Answer: -Always active or changing.-Having or showing a lot of energy.-Of
or relating to energy, motion, or physical force.
◍ Fluoroscopy allows for?.
Answer: -Imaging of the movement of internal structures. Can visualize
function and motion in real time.-Commonly used for GI, vascular, and
urinary studies, ect.-This often requires the use of contrast media.
◍ When and by whom was fluoroscopy invented?.
Answer: -Thomas Edison.-1896
◍ What is the typical X-ray tube current in fluoroscopy?.
Answer: -5 mA-Can range from .5 to 5 mA-Compare this to a radiograph
which can range from 50-1200 mA.
◍ What is the primary purpose of an image intensifier in fluoroscopy?.
Answer: To increase image brightness and improve visual acuity.
◍ They used to use (blank) screens.
Answer: "Fluoroscopic" screens
◍ Used to require (blank) minutes of dark adaptation..
Answer: "15" minutes of dark adaptation
◍ What are the components of an image intensifier?.
Answer: Input phosphor, photocathode, electrostatic lenses, and output
phosphor.
◍ (blank) used for night or dim vision have reduced visual acuity.
, Answer: Rods
◍ (blank) are used for day vision.
Answer: Cones
◍ The (Blank) receives the x-ray beam during fluoroscopy.
Answer: Image Intensifier (ii).
◍ X-rays that exit the patient are (blank) on the ii.
Answer: Incident
◍ The ii converts the x-rays into (blank).
Answer: High intensity visible light image.
◍ What material is the input phosphor made of?.
Answer: Cesium iodide (CsI).
◍ The ii exists within a (blank) to protect and support it..
Answer: Tube-glass or metal-housed within a metal structure.
◍ What is flux gain in fluoroscopy?.
Answer: The ratio of the number of output light photons to the number of
input x-ray photons.
◍ X-rays are (blank) through the glass envelope.
Answer: Transmitted
◍ They (x-rays) interact with the (blank).
Answer: Input phosphor (cesium iodide)
◍ How is brightness gain calculated?.
Answer: Brightness gain = minification gain × flux gain.
◍ What is the formula for minification gain?.
Answer: Minification gain = (d1/d0)², where d1 is the diameter of the output
phosphor and d0 is the diameter of the input phosphor.
◍ What is the conversion factor in fluoroscopy?.
Answer: Conversion factor = Output phosphor illumination (cd/m²) / input
exposure rate (mGya/s).
, ◍ What is the typical kVp range for common fluoroscopic examinations?.
Answer: Approximately 70-120 kVp, depending on the examination.
◍ What is the role of the LED monitor in fluoroscopy?.
Answer: To display the electronic signal converted from the light signal of
the output phosphor.
◍ What is modulation in medical imaging?.
Answer: A change in a quantity or signal in response to another quantity or
signal.
◍ The energy is converted to (blank).
Answer: Visible light
◍ What is the frame rate for video monitoring in fluoroscopy?.
Answer: 30 frames per second.
◍ The light intensity emitted by the input phosphor (cesium iodide) is equal to
the intensity of the (blank).
Answer: Exit radiation
◍ What does magnification mode improve in fluoroscopy?.
Answer: Spatial resolution and contrast resolution.
◍ This light then interacts with the (blank).
Answer: Photocathode
◍ The photocathode is composed of (blank).
Answer: Cesium and Antimony
◍ These compounds emit (blank).
Answer: Electrons
◍ The process is called (blank).
Answer: Photoemission
◍ What is automatic brightness stabilization (ABS)?.
Answer: A system that measures the input exposure rate to the
image-intensifier tube.
