Digital Radiography Review: CR-PSP & DR-FPD

What does CR stand for?

• Computed Tomography

• Complicated Radiography

• Computed Radiography

• Competition Radiology

The amount of gray shades that an imaging system can produce in response to varying levels of exposure is called its __.

• spatial frequency

• contrast

• spatial resolution

• dynamic range

In digital imaging, spatial resolution is ultimately limited by __.

• focal spot size

• spatial frequency

• contrast resolution

• pixel size

The computed radiography cassette contains a(n) __ plate.

• optical

• imaging

• laser

• thermoluminescent

Tags

NGSS.HS-PS4-5

NGSS.HS-PS4-3

The output signal from the photostimulable phosphor plate is converted from analog to digital by the __.

• optical system

• ADC

• photodetector (PM tube)

• drive mechanism

What is a PSP?

• Photodiode Stimulator
• Positively Stupid Plate

• Photodiode Phosphor plate
• Photostimulable Phosphor Plate

Tags

NGSS.HS-PS4-5

The "latent image" in a CR imaging plate is stored by the:

• Photomultiplier tube

• Analog to digital converter

• Sensitivity speck

• Trapped electrons in phosphor center

The imaging plate is extracted from the cassette in a __.

• reader

• darkroom

• film processer

• film changer

The phosphor most likely used in indirect (CR) radiography is:

• BaSO4 (Barium Sulfate)

• Nal (Sodium Iodide)

• a-Se (Amophous Selenium)

• BaFlBr:Eu (Barium Fluorohalide crystals)

Tags

NGSS.HS-ETS1-3

The computed radiography image has __.

• narrow exposure latitude

• wide exposure latitude

• high contrast resolution

• low contrast resolution