Deck 23: Extraoral and Digital Radiography

Question 1

A conventional x-ray machine is used with digital radiography.

Answer 1

True

Question 2

The fundamental principle of panoramic radiography is based on the principle of tomography.

Answer 2

True

Question 3

Analog images depict a continuous spectrum of gray shades between the black and white.

Answer 3

True

Question 4

The storage phosphor imaging is another type of direct digital imaging system.

Question 5

Digital x-ray technology is expensive and time consuming, so it is not available to dentists.

Question 6

Three-dimensional radiographs take longer to produce and process than traditional radiographs.

Question 7

Panoramic radiographs give the dentist a view of:
1) fractures in bone
2) sinuses
3) the entire dentition
4) TMJ
5) unerupted teeth

A) 1, 2, 3, 4, 5
B) 4 only
C) 1, 2, 3 only
D) none of the above

Question 8

Digital intraoral imaging is a computerized system. One of the advantages of digital intraoral imaging is the ability to alter brightness/contrast.

Question 9

When the x-rays strike the film, the information is recorded on the film. This is called digital imaging.

Question 10

The direct digital image system converts traditional film x-rays to digital images.

Question 11

During a panoramic exposure, the patient should wear a lead apron with a thyroid collar.

Question 12

The patient may sit or stand in a stationary position during the panoramic exposure.

Question 13

Digital radiography is limited to extraoral images.

Question 14

Digital images can be attached as digital data files and sent to which of the following?

A) Other dental offices
B) Insurance companies
C) Patients via letters
D) All of the above

Question 15

A three-dimensional radiograph shows the patient's mouth, face, jaw, and surrounding structures.

Question 16

The radiograph used to assess the patient's skeletal profile and structure is ____________.

A) periapical
B) bitewing
C) panoramic
D) cephalometric

Question 17

Digital radiography computer system allows for displaying an image on a computer screen without exposing and processing dental film.

Question 18

The panoramic cassette is lined with intensifying screens; therefore, the exposure to the patient is intensified.

Question 19

The focal trough of the panoramic machine is also known as the image layer or sharpness.

Question 20

One of the newest advances in imaging is a handheld dental x-ray unit.

Question 21

The dental specialists who routinely use extraoral radiographs are ____________.

A) oral surgeons and orthodontists
B) orthodontists and periodontists
C) periodontists and oral surgeons
D) pediatric dentists and periodontists

Question 23

Extraoral cassettes are usually lined with ____________.

A) phosphors
B) intensifying screens
C) both a and b
D) neither a nor b

Question 24

Sensor/image plates for digital imaging can come in which of the following sizes and designs?
1) Printer
2) Panoramic
3) Computer
4) Cephalometric
5) Scanner
6) Full-sized "0" x-ray
7) Full-sized "2" x-ray

A) 2, 4, 6, 7
B) 1, 3, 5, 6
C) 2, 3, 4, 5
D) 1, 2, 5, 6

Question 25

Which dental specialty routinely uses the cephalometric radiograph?

A) Oral surgeon
B) Orthodontics
C) Periodontics
D) None of the above

Question 26

The radiograph used to assess the patient's skeletal profile and structure is ____________.

A) periapical
B) bitewing
C) panoramic
D) cephalometric

Question 27

Which of the following features of digital radiography can a radiographic image display?

A) Digitized
B) Sent to another office by fax or modem
C) Enhanced
D) All of the above

Question 28

The computer monitor can display over ________ shades of gray, but the human eye can detect only ________ shades of gray.

A) 32; 200
B) 200; 32
C) 100; 15
D) 15; 100

Question 29

The ________ is one of the most widely used image receptors in dental digital radiology

A) CCD
B) PID
C) both a and b
D) none of the above

Question 30

The following are disadvantages of digital radiography EXCEPT ____________.

A) initial expense of equipment and the software
B) extra time is required to become efficient in the use of the digital imaging system
C) capability to enhance, contrast, or zoom in on an image from chairside
D) sensors are usually thicker than the x-ray film packets

Question 31

Utilizing the panoramic radiograph, identify the following mandibular landmarks by abbreviations.

A. (ac)
B. (bom)
C. (c)
D. (cor)
E. (eor)
F. (mc)
G. (mf)
H. (s)

Question 32

The following are advantages of using digital radiography EXCEPT ____________.

A) when sensors are used, there is less exposure to radiation for the patient
B) sensors are usually thicker, causing the patient to gag
C) dentist has quick results on the monitor almost immediately
D) patients have visual images to view when the dentist is discussing areas of concern

Question 33

When a conventional x-ray machine is used with digital radiography, the x-ray machine should be capable of producing ____ kV.

A) 80
B) 90
C) 70
D) 75