unit 6 radr 2209

digital radiography was first introduced by?

• GE in 1998

• Fuji in 1981

• Kodak in 1975

• DuPont in 1965

Computed radiography screens respond to radiation with

• photostimulable luminescence

• fluorescence

• electron emmision

• biological phosphorescence

A photostimulable phosphor in a metastable state will emit light ________________.

• immediately

• when stimulated by light

•  immediately and when stimulated by light

• immediately, when stimulated by light, and over time

Europium is the ______________ of the photostimulable phosphor.

• image buffer

• scintillator

• phosphor

• activator

The computed radiography cassette is called a(n) ______________ receptor.

• optical

• imaging

• laser

• thermoluminescent

The photostimulable phosphor screen is handled in a ______________.

• reader

• dark room

• daylight processor

• direct capture

The computed radiography reader is made up of ______, _____, and _____ modules.

1. mechanical

2. chemical

3. optical

4. computer

• 1 only

• 2 only

• 1 and 2 only

• 1,3 and 4 only

The four steps of creating an image with computed radiography are ______________.

• metastable state, stimulate, read, and erase

• erase, stimulate, metastable state, and read

• read, erase, stimulate, and metastable state

• metastable state, read, erase, and stimulate

Following the laser stimulation of the photostimulable phosphor, the excited electrons are _________________.

• completely stabilized

• mostly stabilized

• still excited

• completely removed

The laser is one of the ____________ features of the computed radiography reader.

• computer

• chemical

• mechanical

• optical