CASSETTE-BASED EQUIPMENT: The Computed Radiography, Imaging Plate, and Reader

Plastic

CASSETTE consists of a durable, lightweight __ material

CASSETTE

lacked by a thin sheet of aluminum that absorbs x-rays

antistatic

Cassette has an __material (usually felt) protects against static electricity

CASSETTE

buildup, dust collection, and mechanical damage to the plate

PROTECTIVE LAYER
PHOSPHOR OR ACTIVE LAYER
REFLECTIVE LAYER
CONDUCTIVE LAYER
COLOR LAYER
SUPPORT LAYER
BACKING LAYER
BARCODE LABEL OR BARCODE STICKER

CONSTRUCTION / LAYERS OF THE IMAGING PLATE

PROTECTIVE LAYER

a very thin, tough, clear plastic that protects the phosphor layer

PHOSPHOR OR ACTIVE LAYER

a layer of photostimulable phosphor that "traps" electrons during exposure

barium fluorohalide

PHOSPHOR OR ACTIVE LAYER is usually made of phosphors from the ___ family (e.g., barium fluorohalide, chlorohalide, or bromohalide crystals)

barium fluorohalide, chlorohalide, or bromohalide crystals

barium fluorohalide family examples

PHOSPHOR OR ACTIVE LAYER

This layer may also contain a dye that differentially absorbs the stimulating light to prevent as much spread as possible and functions much the same as dye added to conventional radiographic screens.

REFLECTIVE LAYER

sends light in a forward direction when released in the cassette reader

REFLECTIVE LAYER

This layer may be black to reduce the spread of stimulating light and the escape of emitted light

REFLECTIVE LAYER

Some detail is lost in this process

CONDUCTIVE LAYER

is a layer of material that absorbs and reduces static electricity

COLOR LAYER

located between the active layer and the support, that absorbs the stimulating light but reflects emitted light

SUPPORT LAYER

a semirigid material that gives the imaging sheet some strength.

BACKING LAYER

a soft polymer that protects the back of the cassette.

BARCODE LABEL OR BARCODE STICKER

allows the technologist to match the image information with the patient-identifying barcode on the examination request

barium fluorohalide crystals

ACQUIRING AND FORMING IMAGE
In CR, the remnant beam interacts with electrons in the ___contained within the imaging plate

conductive layer, color or phosphor center

ACQUIRING AND FORMING IMAGE
This interaction stimulates, or gives energy to, electrons in the crystals, allowing them to enter the ___, where they are trapped in an area of the crystal known as the ___