Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
8 Cards in this Set
- Front
- Back
|
What is a Filament made of?
|
Thoriated tungsten --A small amount of thorium is added to the tungsten of the filament
|
|
|
What is a dual focus tube?
|
x-ray tubes are referred to as Most x-ray tubes are referred to as dual-focus tubes because they have two filaments: a large filament and a small filament.
|
|
|
Tube current refers to.....
|
the flow of electrons from cathode to anode and is measured in units called milliamperes (mA)
|
|
|
Long-scale contrast
|
A radiograph with a large number of densities but little differences among them and described as low contrast.
|
|
|
define- Ionization
|
The ability to remove (eject) electrons; a property of x-rays.
|
|
|
Image Receptor
|
A device that receives the radiation leaving the patient.
|
|
|
Fluoroscopy
|
Imaging of the movement of internal structures with a continuous beam of x-rays.
|
|
|
Target
|
A metal that abruptly decelerates and stops electrons in the tube current, thereby allowing the production of x-rays.
|
