Photocathode - Study guides, Class notes & Summaries

Fluoroscopy question and answers graded A+ 2023 rated A+ 2023 Purpose of fluoroscopy - correct answer visualize dynamic processes Fluoroscopy systems - correct answer image intensified (conventional, digital) flat panel detectors Old school fluoro - correct answer phosphor screen backed with lead glass screens converted x-rays to light light (image) directly viewed by radiologist Disadvantages of old school fluoro - correct answer low light images viewing in total darkness high p...

Electrons from the photocathode are concentrated and directed toward the other end of the image-intensifier tube by a series of ________ and by ________ kVp applied through the tube. - CORRECT ANSWER 1) Electrostatic Lenses (Focusing Lenses) 2) 25 Once electrons are propelled across the tube from the photocathode, they strike the ________. - CORRECT ANSWER Output Phosphor Once the energy of the electrons hits the output phosphor, it is converted by the phosphor to ________ in amount...

Fluoroscopy mA range is Answer 0.5-5.0 During fluoroscopy the SOD cannot be less than how many inches on a mobile unit Answer 12 The input screen absorbs ______________ and emits _______________ Answer X-ray photons, light photons Electrostatic lenses are used to accelerate and focus Answer Electrons The photocathode absorbs ____________ and emits ______________ Answer Light photons, electrons The shape of the input screen helps control Answer Distortion The greater the voltage...

radt 109 Questions And Correct Answers The image intensifier's input phosphor differs from the output phosphor in that the input phosphor - Answer -is much larger than the output phosphor fluoroscopic equipment features designed to eliminate unnecessary radiation exposure to patients and/or personnel include - Answer -1. protective curtains 2. filtration 3. collimation The brightness level of the fluoroscopic image can vary with changes in - Answer -amperage 2. kilovolt 3. patient thic...

California Fluoroscopy Test (2024) Questions Bank With 100% Complete Answers!!

X-rays: Typical diagnostic wavelength and photon energy range. - Answer-100ev-200 keV min. wavelength 6pm-12nm Structure and function of the x-ray tube. - Answer-A vacuum tube with an anode and a cathode. The cathode is heated and electrons are emitted, they are accelerated by a voltage difference in the tube. When the "brake" against the material of the anode, they release their high kinetic energy in the form of an x-ray. *x-ray tubes are of very low efficiency, most of the radiation i...

Fluoroscopy Questions and Answers, Graded A+ -What does Dynamic means: -Always active or changing. -Having or showing a lot of energy. -Of or relating to energy, motion, or physical force. Fluoroscopy allows for? -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? -Thomas Edison. -...

Fluoroscopy Questions and Answers, Graded A+ This is a dynamic radiographic exam that involves active diagnosing during the exam Fluoro What is the primary reason that fluoroscopy is the domain of the radiologist the RA and the PA Bc it involves active diagnosing Fluoro is used for studies that require Observation of dynamic physiological functions The fluoro Imaging Change consist of a Specialized x-ray tube with an image receptor call the floor scopic screen they can ...

Fluoroscopy question & answers graded A+ 2023 already passedThis is a dynamic radiographic exam that involves active diagnosing during the exam - correct answer Fluoro What is the primary reason that fluoroscopy is the domain of the radiologist the RA and the PA - correct answer Bc it involves active diagnosing Fluoro is used for studies that require - correct answer Observation of dynamic physiological functions The fluoro Imaging Change consist of a - correct answer Specialized x-ray ...

Fluoroscopy question and answers rated A+ 2023 passedFluoroscopy mA range is - correct answer 0.5-5.0 During fluoroscopy the SOD cannot be less than how many inches on a mobile unit - correct answer 12 The input screen absorbs ______________ and emits _______________ - correct answer X-ray photons, light photons Electrostatic lenses are used to accelerate and focus - correct answer Electrons The photocathode absorbs ____________ and emits ______________ - correct answer Light photons...