Image intensifier - Study guides, Class notes & Summaries

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 ...

Iron is an example of a _______________ material. CORRECT ANSWER Ferromagnetic For trauma radiography, a radiographer could best acquire images of a lateral distal femur by: CORRECT ANSWER acquiring a cross-table lateral femur with a lateromedial projection Total brightness gain for the image intensifier is calculated by: CORRECT ANSWER flux gain multiplied by minification gain. A person with acute radiation syndrome does not demonstrate signs of illness during the ________ period. COR...

How many attempts within how many years does one have to pass the registry exam? 1. 2 attempts 2. 3 attempts 3. 4 years 4. 3 years a. 1 and 3 b. 1 and 4 c. 2 and 3 d. 2 and 4 (Ans- d. 2 and 4 Which of the following does not represent a responsibility of the radiographer? a. providing a patient with an accurate diagnosis b. keeping patient information confidential c. avoiding discrimination d. providing quality care e. maintaining a professional appearance (Ans- a. provi...

Fluoroscopy physics Test Questions with Correct Answers (Verified Answers) What are two types of coupling devices? - Answer- Fiber optic (uses fiber optic materials to tie the TV camera tube with the image intensifier tube) Lens coupling (uses lenses and mirrors to split the incoming signal into two signals and connect the output phosphor of the II to the TV monitor) What are the advantages and disadvantages of fiber optic coupling devices? - Answer- Advantage - small, compact and rugged D...

What type of movement does the Horizontal Cross Arm do on the C-Arm machine? Extends c-arm a maximum of 8 inches out What type of movement does Wig Wag do on the C-Arm machine? moves c-arm from side to side What type of movement does the Vertical Column Lift do on the C-Arm machine? Raises and lowers the C-arm What type of movement does the Canting/Oblique Rotation do on the C-Arm machine? rotates the intensifier up to 115 degrees What type of movement does the La...

RCIS Written Questions and Accurate Answers 0.5 mm lead equivalent ANSWER Provides 95 % shielding from x-ray Color badges ANSWER Give a good measure of eye exposure Catheters wt high take off ANSWER Amplatz, JL5 X- ray beam that controls amount os electrons boiled off -- effects patient dose/ pt exposure ANSWER Milliamperage (mAs) X-ray beam that controls quality of pictures ANSWER Kilovoltage potential (kVp) Attenuation ANSWER Energy from x-ray that interact wt tissue & change...

what are the factors that directly influence the exposure rate at the panel or tabletop and the patient and the operator's radiation dose? Answer milliamperage, kilovolatage, collimation, filtration, exposure time, target to panel (tabletop) distance (TPD), patient to image intensifier distance for over the table and under the table image intensifier systems, sensitivity of the image receptor what will reduce patient exposure? Answer 1.Collimation to the area of clinical interest only (requi...

Of what material is the x-ray tube component numbered 5 in Figure 7-18 made of? - correct answer Tungsten All the following x-ray circuit devices are located between the incoming power supply and the primary coil of the high-voltage transformer except - correct answer The rectifiers All of the following are daily quality control (QC) steps to ensure optimal diagnostic images on a digital monitor, ex...

An injection set that includes a needle with plastic wings attached is called: A. large bore. B. butterfly. C. contrast agent injecting set. D. sterile tray. b X-rays travel as bundles of energy called: A. energy waves. B. phasers. C. electromagnetic bursts. D. photons. d The increase in brightness caused by acceleration of the electrons in the image intensifier is called: A. flux gain. B. minification gain. C. total brightness gain. D. image gain. a A p...

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...