IMAGING PLATE
EXPOSURE
ARTIFACTS
THE READER
MISC.
100

This takes place of radiographic film

imaging plate

100

It is important to choose the correct _____ or position to avoid overexposure and repeat exams.

part

100

Insufficient erasure settings result in a residual image, this is known as ______.

ghosting

100

The movement of the imaging plate is referred to as _____ ______ direction.

slow scan

100

All phosphors emit ______.

Light

200

This layer traps electrons during x-ray exposure.

Phosphor layer (active layer)

200

When increasing kVp by 15%, mAs is _____ to maintain exposure.

halved

200
Three sources of artifacts:

patient, equipment, and tech errors

200

What amplifies the light and sends it to the ADC

photodetector

200

The image is completely lost at ___ hours.

48

300

This layer absorbs and reduces static electricity.

Conductive layer

300

kVp values now range from around ____ to ____.

45-120

300

Cracks in the imaging plate appear _____ in color.

white

300

Assigning a gray level/pixel is called __________.

Quantization
300

Underexposure produces ______ _______.

quantum mottle

400

This phosphor has less lateral light spread and better spatial resolution.

Structured

400

Two important factors should be considered when selecting the PSP imaging cassette:

type and size

400

Backscatter can cause ______ line artifacts. (light or dark)

dark

400

_____ turn the latent image contained in the IP into a manifest image.

Readers

400

The thinner the phosphor layer, the higher the ___________.

resolution

500

Some detail is lost in this layer.

Reflective layer

500

The _____ the grid frequency, the more mAs needed and the higher the patient dose.

higher

500

This pattern occurs in CR when grid frequency is too low.

Moiré pattern

500

The movement of the laser is referred to as ____ ______ direction.

fast scan

500

The _____ image is formed when the remnant beam interacts with electrons in the barium fluorohalide crystals contained within the imaging plate.

latent