Term
| What does an oscilloscope test? |
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Definition
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Term
| Tested with Dosimeter/Same intensity each time set of technical factors are set |
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Definition
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Term
| What is the variance of reproducibility? |
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Definition
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Term
| How often is reproducibility tested? |
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Definition
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Term
| How often should beam restriction be tested? |
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Definition
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Term
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Definition
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Term
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Definition
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Term
| How often do you check filtration? |
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Definition
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Term
| formula for 3 phase or high-frequency kilowatts |
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Definition
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Term
How often to check overload protector (heat units)?
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Definition
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Term
| Common testing tool for general radiographic equipment |
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Definition
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Term
| Variance for manual collimator on radiographic unit |
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Definition
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Term
| How often do you check timers? |
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Definition
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Term
| Variance for Ma and time linearity |
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Definition
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Term
| What is the largest component of the xray unit? |
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Definition
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Term
| Variance of image receptor alignment? |
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Definition
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Term
| What is focal spo enlargement over time? |
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Definition
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Term
| How often should focal spot be tested? |
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Definition
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Term
| How often do you check bucky alignement? |
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Definition
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Term
| At what % will you get a warning for maximum heat units? |
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Definition
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Term
| How often do you check SID accuracy? |
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Definition
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Term
| How often do you test fluoro equipment? |
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Definition
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Term
| Variance for manual collimators in fluoro? |
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Definition
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Term
| How often should aprons and gloves be tested? |
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Definition
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Term
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Definition
| same mR when exposure remains constant |
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Term
| Variance of reproducibility |
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Definition
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Term
Do you test focal spot in fluoro?
True/False |
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Definition
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Term
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Definition
| Double mA = Double intensity |
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Term
| Lead equivalency for buck slot cover |
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Definition
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Term
| When does the heat sensor alarm for fluoro? |
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Definition
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Term
| Maximum exposure rate for fluoro units with ABS |
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Definition
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Term
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Definition
| Automatic Brightness Stabilization |
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Term
| Maximum exposure for fluoro without ABS |
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Definition
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Term
| How is the television camera and output phosphor linked? |
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Definition
| fiber optic coupling and lens coupling |
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Term
| What time will the fluoro timer alarm? |
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Definition
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Term
| Whats the preferred generator for fluoroscopy? |
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Definition
| 3 phase or High Frequency |
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Term
The size of the output phoshpor can vary?
True/False
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Definition
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Term
| What is the test tool for high contrast resolution? |
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Definition
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Term
An 8" input phosphor size incresaes patient dose as compared to a 12"?
True/False |
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Definition
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Term
| How many rectifiers do single phase, full wave rectified generators use? |
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Definition
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Term
| Standard frequency of AC current in US |
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Definition
| 60Hz or 60 cycles per second |
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Term
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Definition
| Single-phase, three-phase, high frequency |
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Term
| Newest type of generators |
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Definition
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Term
| Is a three-phase generator "in phase" or "out of phase"? |
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Definition
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Term
| Two typed of three-phase generators |
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Definition
| Six-pulse and twelve-pulse |
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Term
| Amount of variation from peak voltage |
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Definition
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Term
| Voltage ripple on a single-phase generator |
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Definition
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Term
| Voltage ripple for high frequency generator |
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Definition
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Term
| Voltage ripple for three-phase, six pulse generator? |
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Definition
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Term
| Voltage ripple for three-phase, twelve pulse generator |
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Definition
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Term
|
Definition
| Automatic Exposure Controls |
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Term
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Definition
| Sensor/Detector and the comparator |
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Term
| Most common type of detecor in an AEC |
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Definition
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Term
| What does the AEC control? |
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Definition
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Term
What is the lead equivalency for gloves?
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Definition
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Term
| Lead equivalence for the fluoro drape |
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Definition
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Term
| Variance for fluoro collimators/shutters |
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Definition
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Term
| What is the maximum leakage for metal housing of tube? |
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Definition
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Term
| Exposure a R.T. is allowed to have per year |
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Definition
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Term
| Distance visitor should stand away from beam |
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Definition
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Term
| Inherited filtration for an xray tube |
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Definition
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Term
| Repeat rate for general radiology department |
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Definition
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Term
| Lead equivalency for eyeglasses |
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Definition
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Term
| 3 cardinal rules for radiation protection |
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Definition
| time, distance, shielding |
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Term
| Lead equivalency for a control window in technologist workstation |
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Definition
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Term
| Gonad shields reduce exposure by what percentage? |
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Definition
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Term
| Maximum exposure for pregnant R.T. for entire gestation |
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Definition
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Term
| Gonad shield should be used when gonads lie within _____ cm of primary beam |
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Definition
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Term
| What is the principle source of radiatino to the population? |
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Definition
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Term
| 4 parts of the fluoro unit |
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Definition
X-ray Tube
Generator- 3 phase or high frequency
Image Intensifier
Video Monitoring |
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Term
| Parts of Image Intensifier |
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Definition
Glass Envelope
Focusing Lens
Input Phosphor
Output Phosphor
Anode
Photocathode |
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Term
What causes veiling glare or flare?
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Definition
moving the fluoro unit too fast |
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Term
What is pincushion distortion?
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Definition
| Reflecting image from curved surface -input- to flat surface - output- |
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Term
| What are two types of image intensifier artifacts? |
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Definition
| Pincushion and flare/veiling |
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Term
| Output is ___" in diameter? |
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Definition
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Term
| What material composes the input phosphor? |
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Definition
| glass or aluminum covered with cesium iodide |
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Term
| Purpose of the glass envelope that surrounds image intensifier |
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Definition
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Term
| Two methods to link the TV camera to the output phosphor |
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Definition
Fiber optics- flexible glass fibers (we use this)
Lens Coupling- mirrors and lenses split image |
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Term
| Minimum lead equivalency for a protective drape/curtain |
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Definition
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|
Term
| Variance for manual collimator on radiographic unit |
|
Definition
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Term
| Variance for PBL for radiographic unit |
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Definition
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|
Term
| Variance for collimator on fluoroscopy tower |
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Definition
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|
Term
| Variance for table angle indicator |
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Definition
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Term
| General fluoroscopy testing should be done how often: |
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Definition
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Term
| What is ABS and what does it do? |
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Definition
Automatic Brightness Stabilization
automatically stabilizes brightness level with varying patient size |
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Term
| Describe the four fluoro camera systems: |
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Definition
Orthicon- expensive- intensifier and tv tube in one
Plumbicon- digital fluoro- short lag time
Vidicon- most common video camera in fluoro
Charged Couple Device- pixels to create signal |
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Term
What mA amount fluoro generally uses:
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Definition
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Term
| Formula for minification gain |
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Definition
(Input Phosphor)^2
(Output Phospor)^2 |
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Term
|
Definition
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|
Term
| Formula for brightness gain |
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Definition
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Term
| Variance for fluoro KVP variance |
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Definition
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|
Term
| Most tv monitors use ____ _____ ____ |
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Definition
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Term
| What is the variance for mA linearity? |
|
Definition
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|
Term
| What is the variance for reproducibility? |
|
Definition
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|
Term
| Source to skin distance on fixed fluoro unit |
|
Definition
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Term
| Source to skin distance for mobilr fluoro units |
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Definition
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|
Term
| What is the charge of the focusing lens? |
|
Definition
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Term
| What type of current do generator use? |
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Definition
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Term
| What type of current does our xray tube like? |
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Definition
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Term
| What is the max mA for single phase generator? |
|
Definition
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|
Term
| How often do you test reproducibility? |
|
Definition
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|
Term
| How often do you test radiatino output and what is its variance? |
|
Definition
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|
Term
|
Definition
Ion Chamber
Solid State
PhotoDetector |
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Term
| What are the back-up setting for AEC? |
|
Definition
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|
Term
| What is the variance for mAs? |
|
Definition
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|
Term
| Variance for tomographic unit (section level) |
|
Definition
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|
Term
| Variance for tomographic unit (section thickness) |
|
Definition
5 degrees at arch greater than 30 degrees
2 degrees at arch less than 30 degrees |
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|
Term
| What color does calcium tungstate glow and what is the conversion factor? |
|
Definition
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|
Term
| What is the conversion factor for rare-earth? |
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Definition
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