Photocathode - Study guides, Class notes & Summaries

What is the purpose of developing exposure charts? - Answer-Patient dose and image quality The output screen of a fluoroscopic image intensifier tube is composed of? - Answer-zinc cadmium sulfide The "Electron Image" of the image intensifier tube is formed by electrons released from the... - Answer-photocathode Digital fluoroscopy has numerous benefits, what is the one very important benefit? - Answerdecreased patient dose Digital fluoroscopy can capture an image in... - Answer-33 millis...

California Fluoroscopy UPDATED Exam Questions and CORRECT Answers An image intensifiers photocathode causes ___ to be given off in direct proportion to the intensity of the fluorescent light: a. remnant radiation b. electrons c. x-rays d. light photons - CORRECT ANSWER- electrons What fluoroscopic television system device decodes the video signal into a visible image? a. Vidicon camera b. Camera control unit c. Television monitor d. Electron gun - CORRECT ANSWER- Television...

Fluoroscopy Test Questions and Answers All Correct Where is the tower connected? - Answer- To the x-ray tube mount What does the image intensifier do? - Answer- Increases brightness of image How much can modern image intensifiers increase brightness? - Answer- 8000 times What does the input screen do? - Answer- Absorbs x-ray photons and emits light photons What does the photocathode do? - Answer- Absorbs light photons and emits electrons Where are the electrons accelerated from...

Fluoroscopy Test Questions and Answers Graded A+ What does the automatic brightness control (ABC) do - Answer- allows the radiologist to select an image brightness level that is subsequently maintained automatically by varying the kVp, the mA, or sometimes both. Principal advantage of image-intensified fluoroscopy over earlier types of fluoroscopy is - Answer- increased image brightness The structures in the eye that are responsible for the sensation of vision are called - Answer- rods an...

Fluoroscopy Exam Questions and Answers All Correct New Update What is the difference between fluoroscopy and radiography? - Answer- -fluoro is dynamic -radiography is static What is the primary difference between conventional and image intensified fluoroscopy? - Answer- - Brightness What is the main job of the II (image intensification) - Answer- -convert x-rays to light -II replaced conventional dim fluoro screen -raises illumination to cone vision for better visual acuity -ABC...

RADT 156 FINAL EXAM REVIEW 2024 QUESTIONS WITH 100% CORRECT ANSWERS What is the purpose of developing exposure charts? - Correct Answer ️️ -Patient dose and image quality The output screen of a fluoroscopic image intensifier tube is composed of? - Correct Answer ️️ -zinc cadmium sulfide The "Electron Image" of the image intensifier tube is formed by electrons released from the... - Correct Answer ️️ -photocathode Digital fluoroscopy has numerous benefits, what is the one ve...

An image that demonstrates low contrast can be caused from: 1. High mAs 2. Low kVp 3. Insufficient beam restriction correct answer: 3 only Which of the following interactions with matter reduce contrast in an x-ray image? correct answer: Compton scattering From anatomical position, pronating the hand will result in the palm facing ____. correct answer: Posteriorly The maximum variation between consecutive exposures when using the same technical factor is: correct answer: withi...

Physics Fluoroscopy Exam Questions and Answers All Correct What is the weakest link to the image intensifier? - Answer- TV camera tube The parts on the input side of the intensifier? - Answer- Input phosphor and photocathode What does the input phosphor do? - Answer- Converts photons into light What does the photocathode do? - Answer- Converts light into electrons What is input phosphor COMMONLY made of? - Answer- Cesium-Iodide but can be made with zinc-camnium as well What is ...

What is the purpose of developing exposure charts? - Answer-Patient dose and image quality The output screen of a fluoroscopic image intensifier tube is composed of? - Answer-zinc cadmium sulfide The "Electron Image" of the image intensifier tube is formed by electrons released from the... - Answerphotocathode Digital fluoroscopy has numerous benefits, what is the one very important benefit? - Answer-decreased patient dose Digital fluoroscopy can capture an image in... - Answer-33 millis...

RADT 156 FINAL EXAM REVIEW 2024 QUESTIONS WITH 100% CORRECT ANSWERS What is the purpose of developing exposure charts? - Correct Answer ️️ -Patient dose and image quality The output screen of a fluoroscopic image intensifier tube is composed of? - Correct Answer ️️ -zinc cadmium sulfide The "Electron Image" of the image intensifier tube is formed by electrons released from the... - Correct Answer ️️ -photocathode Digital fluoroscopy has numerous benefits, what is the one ve...