Image Acquisition
The unit of measurement for exposure
What is grays?
This factor affects image contrast
What is kVp?
The unit of measurement for power
What is watts?
Spatial resolution in digital imaging is limited by this
What is pixel size?
The component used to absorb low energy x-rays leaving the tube
The removal of an electron from an atom
What is ionization?
The ability to image and detect two similar objects separately
What is resolution?
The term for a collection of 8 bits
What is a byte?
The national standard for image transmission in teleradiology
What is DICOM?
The first component to receive power in the x-ray circuit
What is the autotransformer?
The reduction of radiation intensity through scatter and absorption
What is attenuation?
The interaction that contributes to the clear parts of an image
What is photoelectric effect?
The term for an image before it is processed
What is latent?
This is used to measure filtration
What is HVL?
This allows electrons to flow from the cathode to the anode
What is a diode?
The efficiency of x-ray production is increased with an increase of this
What is kVp?
The term used when the body part is angled in a perpendicular beam
What is foreshortening?
This determines the degree of contrast resolution on an image
What is dynamic range?
This artifact occurs in CR imaging because of incomplete erasure
What is a ghost image?
The material the filament is made of
What is tungsten?
This interaction occurs without ionization
What is coherent scatter?
The principal source of noise in CR
What is scatter radiation?
CR uses this for latent image formation
What is a PSP plate?
This is a graph of the frequency of occurrence versus digital value intervals
What is a histogram?
The most commonly used beam restricting device
What is the collimator?