Chapter 8

Question 1

Biggest advantage

Answer 1

less radiation to the patient

Question 2

Radiation when compared to D film

Answer 2

80% reduction

Question 3

Radiation when compared to E & F film

Answer 3

60%

Question 4

radiography

Answer 4

Photographic image created with radiation

Question 5

Digital imaging

Answer 5

Replaces film with a solid-state image receptor, and the image is made with a computer. ( No processing system is needed)

Question 6

a Digital image has no physical form

Answer 6

it has bits if information in a computer file that tells the computer how to construct the image on a monitor

Question 7

Technique and prep. traditional vs digital

Answer 7

The technique and methods for exposing the picture are the same

Patient preparation is the same

Question 8

uses for a radiograph

Answer 8

Same for traditional and digital
1. See in between the teeth
2. Evaluate trauma
3. Growth and development
4. Show real-time information

Question 9

Traditional film

Answer 9

Image similar to a painting

continuous flow from one color to the next

Question 10

Digital image

Answer 10

similar to a mosaic

Structurally ordered pixels

The more pixels = the shaper the image and the higher the resolution

Question 11

Digital sensors

Answer 11

1. wired- causing a Limited range
2. Wireless- increases mobility, thicker, sensitive to other electric signals

Available in sizes that approximate film packets

Question 12

PSP plates

Answer 12

resemble film packets

Thin and flexible - require caution to not to damage them

Scanning time 10 sec for PA or 5 min for a PAN

more variety in size

Question 13

an existing x ray machine can be used with digital imaging if …

Answer 13

They have settings to produce short exposure times

Question 14

Gray scale

Answer 14

Number of shades of gray visible in an image

detection and diagnosis of oral conditions depend on gray scale to provide the appropriate level of contrast

Question 15

Digital radiographic systems can produce _____ gray levels

Answer 15

65,000+

Question 16

Computer monitors can display ____ gray levels

Answer 16

256

Question 17

Human eye can detect ____ gray levels

Answer 17

32

Question 18

true or false
The computer will show what was exposed in the original exposure

Answer 18

True

Id the original was not dense enough to show the discrepancy, it will not be seen by darlings the image

Question 19

Problems with digital radiographs

Answer 19

1. More retakes!!!
   
   • easy retakes
     -Thicker sensor
   • Less recording space
     -“less radiation”