Chapter 25 questions

Question 1

a small detector that is placed intraorally to capture the radiographic image.

Answer 1

sensor

Question 2

an image receptor found in the intraoral sensor.

Answer 2

CCD-charged-coupled device

Question 3

a form of indirect digital imaging in which the image is recorded on phosphor-coated plates and then placed into an electronic processor, where a laser scans the plate and produces an image on a computer screen.

Answer 3

storage phosphor imaging

Question 4

to convert an image into digital form that, in turn, can be processed by a computer.

Answer 4

digitize

Question 5

a method of obtaining a digital image in which an intraoral sensor is exposed to x-rays to capture a radiographic image that can be viewed on a computer monitor.

Answer 5

direct digital imaging

Question 6

a discrete unit of information; a picture element.

Answer 6

pixel

Question 7

a method of obtaining a digital image, in which an existing radiograph is scanned and converted into a digital form using a CCD camera

Answer 7

indirect digital imaging

Question 8

a method of reversing the gray scale as a digital image is viewed.

Answer 8

digital subtraction

Question 9

a filmless imaging system; a method of capturing a radiographic image using a sensor, breaking the image into electronic pieces, and presenting and storing the image using a computer.

Answer 9

digital radiography (imaging)

Question 10

in digital imaging, the term used to describe the picture that is produced is radiograph?

Answer 10

false: digital imaging

Question 11

digital imaging requires more x-radiation than does conventional radiography?

Answer 11

false: requires less radiation

the sensor is more sensitive to x-rays

Question 12

the x-radiation source used in most digital imaging systems is a conventional dental x-ray unit.

Answer 12

true

Question 13

compared w/film emulsion, the pixels used in digital imaging are structured in an orderly arrangement.

Answer 13

true

Question 14

all intraoral sensors can be heat-sterilized after use.

Answer 14

false: must be covered with a disposable barrier or sleeve because they cannot w/stand heat sterilization

Question 15

the preferred exposure method for intraoral digital imaging is the paralleling technique.

Answer 15

true

Question 16

one advantage of a digital imaging system is the superior gray-scale resolution that results.

Answer 16

true

Question 17

digital subtraction is an advantage in digital imaging because distracting background information is eliminated from the image

Answer 17

false

Question 18

the manipulation of the original digital images can be considered a legal issue

Answer 18

true

Question 19

digital imaging was introduced to dentistry in:

Answer 19

1987

Question 20

digital imaging can be used for:

Answer 20

1. detecting conditions of the teeth and surrounding structures
2. evaluating growth and development of the jaws
3. confirmation of suspected diseases

Question 21

digital imaging requires less radiation than does conventional radiography because:

Answer 21

the sensor is more sensitive to x-rays

Question 22

the method of obtaining a digital image similar to scanning a photograph to a computer screen is termed:

Answer 22

indirect digital imagining

Question 23

the image receptor found in the intraoral sensor is termed:

Answer 23

CCD (charge couple device)

Question 24

digital imaging systems can be used for:

Answer 24

bite-wing images

Question 25

all of the following are advantages of digital imaging except:

Answer 25

1. digital subtraction
2. the ability to enhance the image
3. patient education