fluroscopy chpt 21
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Rods are a.more sensitive to light than cones b.less sensitive | show 🗑
|
||||
| How is illumination measured? | show 🗑
|
||||
| show | =100-1000 lux
🗑
|
||||
| Rods are a.more sensitive to light than conesb.less sensitive | show 🗑
|
||||
| show | =b.cones
🗑
|
||||
| show | =a.scotopic
🗑
|
||||
| show | =True
🗑
|
||||
| show | =b.photopic
🗑
|
||||
| Structure better detecting different brightness levels are? | show 🗑
|
||||
| What is function of image intensifier tube? | show 🗑
|
||||
| show | =Input phosphor
🗑
|
||||
| show | =Cesium iodide
🗑
|
||||
| Once the xray beam interacts with input phosphor, what occurs next? | show 🗑
|
||||
| The photocathode is located where? | show 🗑
|
||||
| What is the photocathode made of?= | show 🗑
|
||||
| What is the function of the photocathode? | show 🗑
|
||||
| show | =Directly proportional.
🗑
|
||||
| Electrons produced by photoemission will be accelerated to where?= | show 🗑
|
||||
| show | =A circular plate with a hole in it.
🗑
|
||||
| What is located on the other side of the anode? | show 🗑
|
||||
| show | =Zinc cadmium sulfide.
🗑
|
||||
| What is the job of the anode? | show 🗑
|
||||
| show | =To control the path of the electrons.
🗑
|
||||
| What is the function of the output phosphor? | show 🗑
|
||||
| show | number of output light photons/number of input x-ray photons.
🗑
|
||||
| What is the the equation for Brightness Gain | show 🗑
|
||||
| show | (di/do)2 di-diameter of input phosphor do-diameter of output phosphor
🗑
|
||||
| What happens as the diameter of the multified intensifiers is decreased | show 🗑
|
||||
| show | Converts light from output phosphor into an electrical signal and sends to TV monitor.
🗑
|
||||
| Function of the glass envelope of TV camera? | show 🗑
|
||||
| show | The electron gun.
🗑
|
||||
| What is the electron gun? | show 🗑
|
||||
| What forms the currents from electron gun into an electron beam and helps accelerate them? | show 🗑
|
||||
| The beam from the electron gun is further accelerated and focused by the? | show 🗑
|
||||
| show | 1.face plate 2.signal plate 3.target/photoconductive
🗑
|
||||
| What is the normal tube current range during fluoroscopy? | show 🗑
|
||||
| The image intensifier improved fluoroscopy by increasing image______? | show 🗑
|
||||
| Visual acuity int he is greatest at the ________, where ______ are concentrated? a. retinal periphery, cones b.fovea centralis, cones c.retinal periphery, rods d. fovea centralis, rods | show 🗑
|
||||
| The ____ in the retina are stimulated by ______ light: the ___ are stimulated by ________ light. a.rods, bright;cones, low b.rods, low;cones, low c.rods, low;cones, bright d. rods, bright; cones, bright | show 🗑
|
||||
| X-rays that exit the patient and enter the image intensifier first interact with the a.output phosphor b.input phosphor c.photocathode d.anode | show 🗑
|
||||
| show | a.cesium iodide
🗑
|
||||
| show | d.xrays, light
🗑
|
||||
| show | c.photocathode
🗑
|
||||
| show | d.directly proportional
🗑
|
||||
| show | a.output phosphor
🗑
|
||||
| show | b.brightness gain
🗑
|
||||
| show | d.flux gain
🗑
|
||||
| An image intensifier tube is identified by the diameter of its a. input phosphor. b. glass housing. c. output phosphor. d. focusing lenses. | show 🗑
|
||||
| show | c.brightness gain
🗑
|
||||
| Viewing the fluoroscopic image in magnification mode increases a. contrast resolution. b. spatial resolution. c. patient dose. d. All of the above. | show 🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
mcabrio