Chapter 25 And 29 In Radiography

Question 0

What word is used to describe the pictures that are produced in digital imaging

Answer 0

IMAGE not radiograph or X-ray

Question 1

Digital imagining

Answer 1

A computerized imagining system used to record radiographic images that requires NO film or processing . Instead the digital imaging uses an electronic sensor that produces radiographs almost instantly on a computer.

Question 2

Exposure time for digital imaging

Answer 2

Are 50 to 90 % less than those required for conventional radiographs

Question 3

Most digital imagining systems use a ? As the x radiation source

Answer 3

Conventional dental x ray unit

Question 4

The CMOS detector is

Answer 4

Silicon based and differs from the CCD detector in the way that the pixels are read.

Question 5

The human eye can only perceive

Answer 5

32 shades of gray

Question 6

The essential components for a direct digital imaging system include

Answer 6

An X-ray machine,intra oral sensor , and computer monitor. A sensor with a fibrotic cable is linked jot the cable monitor andlaced in the mouth of the patient.

Question 7

A primary advantage of digital imaging

Answer 7

The superior gray scale resolution that results

Question 8

Digital imaging used ? Shades of gray

Answer 8

256 ( over 16,000 depending on the manufacturer

Question 9

Advantages of digital imaging

Answer 9

Superior gray scale
Reduced exsposure to x radiation
Increased speed of image viewing

Question 10

Disadvantages of digital imaging

Answer 10

Infection control

Legal issues

Question 11

Mastoid process

Answer 11

A marked prominence of bone located. Posterior and inferior to the temporomandibular joint, TMJ

Question 12

External auditory meatus ( extra oral acoustic meatus)

Answer 12

Is a hole or opening in the temporal bone located superior and anterior to the mastoid process.

Question 13

Articular eminence

Answer 13

Appears as a rounded radiopague projection of the bone located antierior to the glenoid fossa.

Question 14

Pterygomaxillary fissure

Answer 14

Description. A narrow space or cleft that separates the lateral pterygoid plate and the maxilla.

Question 15

Maxillary tuberosity

Answer 15

Appearance appears as a radioplaque bulge distal to the third molar region

Question 16

Orbit

Answer 16

Appearance a rounded radiolucent compartment with radioplaque borders located superior to the maxillary sinuses. Ok most panoramic images only the inferior border of the orbit is visible.where it appears as a radioplaque line

Question 17

Nasal cavity

Answer 17

Also known as the nasal Fossa is pear shaped.

Question 18

Zygomatic process of maxilla

Answer 18

Appearance appears as J or U shaped radiopacity located superior to the maxillary first molar region.

Question 19

Hamulus

Answer 19

Description a small, hooklike projection of bone that extends from the medial pterygoid plate of the sphenoid bone.

Question 20

Coronoid process

Answer 20

Description a marked prominence of bone found on the anterior superior ramus of the mandible.

Question 21

Lingual foremen

Answer 21

Description a tiny opening or hole located on the internal surface of the mandible near the middline

Question 22

Ear

Answer 22

Superimposed over the styloid process