RADT 456- QC Word Scramble
|
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
| Question | Answer |
| What type of x-ray tube is designed to turn on and off rapidly, providing multiple short, precise exposures? | Grid-controlled x-ray tube |
| Choke coil and autotransformer both operate on what type of induction? | Self-induction |
| The ___ operates on the principle of mutual induction. | High-voltage transformer |
| When using the smaller field in a dual-field image intensifier, what occurs to the image? | The image is magnified |
| What are radiopaque objects such as pennies or paper clips often used to measure? | The congruence of the x-ray beam with the light field |
| What is the definition of the HVL of a particular beam? | The thickness of a material that will reduce the exposure rate to 1/2 of its original value. It is often used to express the quality of the beam. |
| True or False. KVP and HVL have a direct relationship? | True |
| What device converts electrical energy into mechanical energy? | Motor |
| A ___ converts mechanical energy into electrical energy. | Generator |
| What is a slit camera used to measure? | Focal-spot size and spatial resolution |
| True or False. Most of the primary beam is made up of Characteristic radiation? | False. The majority of the primary beam is Bremsstrahlung radiation. |
| An electron approaching a positive nuclear charge changes direction and loses energy is a description of what? | The production of Bremsstrahlung radiation |
| The percentage of drop from maximum voltage that each pulse of current experiences | Voltage ripple |
| The voltage ripple associated with a three-phase, six-pulse rectified generator is about __%. | 13 % |
| The voltage ripple associated with a three-phase, twelve-pulse generator is about __% voltage ripple | 3.5% |
| True or False. Compton scatter and the photoelectric effect are interactions between x-ray photons and tissue atoms | True |
| What is the anode made of? | Molybdenum disk is coated with tungsten-rhenium alloy |
| Focal spot size, linearity, reproducibility, collimation, filtration, kv and exposure time must be tested how often? | Annually |
| What device is affected when a radiographer selects kvp on the control panel? | Autotransformer |
| What does linearity mean? | A given mAs value, using different MA stations with appropriate exposure time adjustments, will provide consistent intensity |
| The total brightness gain of an image intensifier is the product of ____ & ____. | Flux and minification gain |
| The ratio of the # of x-ray photons at the input phosphor compared to the # of light photons at the output phosphor is termed? | Flux gain |
| How do you calculate heat units for three-phase, twelve-pulse equipment? | MA * time * kVp * 1.41 |
Created by:
kjschapker
Popular Radiology sets