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Equipment Op/QC
Question | Answer |
---|---|
The type of x-ray tube designed to turn on and off rapidly | grid-controlled |
The electron cloud within the xray tube is the product of a process called | thermionic emission |
What causes pitting, or melting, of the anode's focal track | repeated, frequent overloading |
What are the ion chambers in the bucky for | AEC |
Congruence of the xray beam with the light field is tested using | radiopaque objects (pennies) |
What converts electrical energy into mechanical energy | motor |
The essential function of a phototimer is to | terminate the exposure once enough xrays have hit the IR |
The device that receives teh remnant beam, converts it into light and increases brightness is what | image intesifier |
What occurs during Bremsstrahlung radiation production | The electron slows and changes direction |
What system functions to compensate for changing patient thickness during fluoro | Automatic brightness control |
When the radiographer selects kilovoltage what device is being adjusted | autotransformer |
As electrons impinge on the anode surface, less than 1% of their energy is turned into what | xrays |
What is the device that directs the light emitted from the image intensifier to various viewing and imaging apparatus | beam splitter |
The xray tube in a CT imaging system is associated with | pulsed xray beam |
The device used to change alternating current to unidirectional current is | solid state diode |
The image intensifier tube's input phosphor functions to convert | xrays to light |
What is the formula for determining heat units for a three phase 12-pulse xray | mA X time X kV x 1.41 |
Which of the following terms describes the amount of electric charge flowing per second | Current |
What part of an induction motor is IN the glass envelope | rotor |
what functions to increase milliamperage | increase heat at filament (more electrons burned off) |
A photostimulable phosphor is used with | CR |