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 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 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. -...

The ability to produce a high - voltage electrical current in the x - ray tube is accomplished through which of the following devices ? - Transformers Spatial resolution is a term used to describe the - Ability to see small structures on an image The movement or flow of particles on the surface of a conducting material is known as : - Electrical current Bone age assessment is used to radiologically assess the biological and structural maturity of using which radiographic images ? - H...

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 ...

According to National Council on Radiation Protection and Measurement (NCRP) guidelines, a medical xray tube must include aluminum equivalent filtration equal to a minimum of: - 2.5 mm Which two guidelines are accepted means of controlling infection in the imaging department? 1. Never transport an isolation patient into the radiology department 2. Wash hands before and after every patient 3. Wear gloves when emptying soiled linen 4. Recap dirty needles 5. Wear head covering when working w...

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...

Topic 1: Fluoroscopy question with correct solution graded A+ passed 2023Fluoroscopy - correct answer involves capture of a dynamic sequence up to 30FPS of x-ray images in real time Image Intensifier - correct answer - typical 10min procedure takes up to 18 000 images - fluoroscopic systems must produce each image with 1/1000th of the x-ray dose - signal from the patient need to be amplified or a very sensitive, low noise detector must be used. 4 principal components of II (VIEO) - corr...

Chapter 36: Fluoroscopy Questions and Answers, Graded A+ Fluoroscopy a dynamic radiographic examination; involves active diagnosis during an examination Image Intensification Tube video camera and monitor used to view fluoroscopic images Thomas Edison invented a more notable fluoroscope in 1896 His fluoroscope produced a very faint image that one viewed while standing in the path of the x-ray beam as it exited the patient and screen. It had two drawbacks: The dose to the ...