Digital & Film Radiography

Question 1

digital receptors

Answer 1

phosphor plate
solid state sensor
both multiple use

Question 2

phosphor plate sizing’s

Answer 2

size 0 = anterior PAs
size 2 = bitewings, posterior PAs
size 4 = occlusals

Question 3

DICOM

Answer 3

digital imaging & communications in medicine
international standard format for handling digital medical images

Question 4

phosphor plates

Answer 4

• thinner, lighter, flexible
• wireless so more stable & comfortable
• variable room light sensitivity so risk of impaired image
• latent image needs processed in scanner separately
• handling similar to film

Question 5

solid state sensors

Answer 5

• rigid
• usually wired
• smaller active area
• no issues with room light control
• arguably more durable as replaced less often
• more expensive
• bulkier

Question 6

in radiographic film structure

Answer 6

from inside out
1. transparent plastic base
2. adhesive
3. emulsion - silver halide crystals
4. protective coating of clear gelatin

Question 7

adv of digital radiography

Answer 7

• no need for chemical processing
• easy storage & archiving of images
• easy back up of images
• images can be integrated into patient records if digital
• easy transferring of images
• images can be manipulated

Question 8

disadv of digital radiography

Answer 8

• worse resolution so risk of pixelation
• requires diagnostic level computer monitors for optimal viewing
• risk of data corruption
• hard copy print outs generally have reduced image quality
• image enhancement can create misleading images