1130 #2
Help!
|
|
||||
|---|---|---|---|---|---|
| What technical factor does the technologist set manually when using AEC? | show 🗑
|
||||
| show | positioning
🗑
|
||||
| show | greatest, greatest
🗑
|
||||
| If 3 cells are sctivated during a BE so that the barium was over 1 cell and normal tissue was over the other 2 cells, the resultant image would be? | show 🗑
|
||||
| If all 1 cell is activated during a BE so that the barium is over the cell, what would be the result? | show 🗑
|
||||
| show | no, it won't do any good
🗑
|
||||
| show | when densitiy is improper (over a prostesis)
🗑
|
||||
| ___________ _________ collimation skills result is an increase repeat rate when using AEC? | show 🗑
|
||||
| show | Detector selections
🗑
|
||||
| When using AEC, the technologist should do what when it comes to collimation? | show 🗑
|
||||
| show | TOo dark
🗑
|
||||
| show | 150 or 2-3 times
🗑
|
||||
| Will AEC always provide for a precisely repeatable exposure? | show 🗑
|
||||
| show | decreased
🗑
|
||||
| show | all 3
🗑
|
||||
| show | Rt
🗑
|
||||
| The cathode is on the _____ side? | show 🗑
|
||||
| The filament and focusing cup are on the ________? | show 🗑
|
||||
| What material is the filament made out of? | show 🗑
|
||||
| By increasing what factor will increase the number of electrons boiled off by the filament? | show 🗑
|
||||
| What size are the small focal spots? | show 🗑
|
||||
| show | Better detail
🗑
|
||||
| show | Have to use lower mA, limit size of primary beam field at a short SID
🗑
|
||||
| What is the function of the filament? | show 🗑
|
||||
| What amperage is neccessary for thermionic emission? | show 🗑
|
||||
| show | Narrow the thermionic cloud, repels staying electrons. As the electrons build up in the filament, the neg charges begin to oppose additional electrons
🗑
|
||||
| show | Primary thermal conductor, serves as a target for high voltage electrons, conduct high voltage from cathode back to x-ray generator
🗑
|
||||
| What is the purpose of the rotating anode? | show 🗑
|
||||
| What material is the anode made out of? | show 🗑
|
||||
| show | high melting point, high atomic #, heat conducting ability
🗑
|
||||
| What problems are associated with the anode? | show 🗑
|
||||
| Small target angle limits the size of the primary beam when used with? | show 🗑
|
||||
| Describe the target area? | show 🗑
|
||||
| show | Starts form target to measure
🗑
|
||||
| show | kinetic energy
🗑
|
||||
| show | 12 degrees
🗑
|
||||
| Diagnostic tube gave focal spots of ____mm to ___mm? | show 🗑
|
||||
| Due to the anode heel effect, how much total variance in the number of photons can occur? | show 🗑
|
||||
| Describe why the anode heel effect is a problem? | show 🗑
|
||||
| show | Thicker part on cathode end
🗑
|
||||
| What is the stator function? | show 🗑
|
||||
| Where is the stator located? | show 🗑
|
||||
| show | hollow copper cylinder is attached to the anode disk by a molybdenum shaft. Silver plated ball barings around the shaft that attach to the glass envelope.
🗑
|
||||
| show | bad ball bearings
🗑
|
||||
| show | houses entire cathode and anode assembly. Keeps the vacuum
🗑
|
||||
| What is the window? | show 🗑
|
||||
| What is the protective housing's function? | show 🗑
|
||||
| Leakage radioation must not exceed ____ mR/hour at _____ meter? | show 🗑
|
||||
| show | limits the electrons from the filament
🗑
|
||||
| show | composed of photons that were not produced at the focal spot
🗑
|
||||
| Off-focus radiation can contribute to as much as _____% of the primary beam? | show 🗑
|
||||
| How are tube rating charts used? | show 🗑
|
||||
| What is heat unit? | show 🗑
|
||||
| show | kVp x mA X time X recitification constant. Single 1.00, 3 1.35, high 1.40
🗑
|
||||
| Know how to use cooling charts | show 🗑
|
||||
| show | braking or slowing
🗑
|
||||
| show | Interacts w/ the force field of the nucleus
🗑
|
||||
| In Characteristic radiation, the incident electron is? | show 🗑
|
||||
| show | k shell
🗑
|
||||
| show | 80-100 Kvp
🗑
|
||||
| show | Brems
🗑
|
||||
| show | keV energy of only 30-40% of kVp
🗑
|
||||
| What are the factors that affect both amplitude and position of the em\mision spectrum? | show 🗑
|
||||
| show | mA, time or mAs
🗑
|
||||
| show | 60
🗑
|
||||
| Type of current in the US Volts? | show 🗑
|
||||
| Type of current in the US | show 🗑
|
||||
| X-ray equipment operates on what incoming line voltage? | show 🗑
|
||||
| show | when full-wave rectification is applied to 3 phase current, it produces a voltage ripple of 6 hz or 360 pulse per sec. ripple of 13-25%. Tube never falls below 75-87% of peak kilovoltage
🗑
|
||||
| show |
🗑
|
||||
| show | 3-5 and 6-12 volts
🗑
|
||||
| show |
🗑
|
||||
| Electronis timers? | show 🗑
|
||||
| show | 3-5 ampes and 6-12 volts
🗑
|
||||
| Single phase generators? | show 🗑
|
||||
| show | 360 pps, 13-25% ripple 87% rms peak voltage voltage never falls below 75-87%
🗑
|
||||
| 3 phase, 12 pulse? | show 🗑
|
||||
| show | P=v x amp
🗑
|
||||
| What are hight frequency generators? | show 🗑
|
||||
| show | supplies AC current, mobile with recharging capabilities
🗑
|
||||
| show | Lg, patient radiation is absorbed and less converted to electrical signal. Takes longer exposure to get predetermines level. Length of time is directly related to density.
🗑
|
||||
| How many ionizaion chambers are used? | show 🗑
|
||||
| What is the minimum reation time for most ionization chambers? | show 🗑
|
||||
| What is the function of the back-up timer? | show 🗑
|
||||
| What should the back-up timer be set at ______% for an anticipated manual exposure mAs? | show 🗑
|
||||
| What cannot be controlled by the radiographer when using AEC? | show 🗑
|
||||
| show | radiaion detection that produces small electrical current when struck by radiation
🗑
|
||||
| show |
🗑
|
||||
| AEC devices automatically terminate an exposure after a predeterined amount of? | show 🗑
|
||||
| show | center cell
🗑
|
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:
638323941
Popular Radiology sets