1. Radiographic Contrast and Density

Question 1

Radiographic Density also known as

Answer 1

optical density, photographic density, or film density

Question 2

a measure of the degree of film darkening

Answer 2

Radiographic Density

Question 3

the degree of darkness

Answer 3

Radiographic Density

Question 4

the degree of density difference between

two areas on a radiograph

Answer 4

Radiographic Contrast

Question 5

difference between those x-rays absorbed and those transmitted to the IR (image receptor)

Answer 5

Differential Absorption

Question 6

the most important characteristic of a radiograph

Answer 6

Technical balance

Question 7

In a radiographic sense, balance is the relationship between ______, ______, and ______

Answer 7

contrast, density, and sharpness

Question 8

abrupt density differences

Answer 8

Short scale contrast

Question 9

subtle details can be missed

Answer 9

Short scale contrast

Question 10

produce visibility of detail

Answer 10

variations in density (contrast)

Question 11

2 Major Elements that Make up Radiographic Contrast

Answer 11

Subject Contrast and Film Contrast

Question 12

is the amount of differential absorption that has taken place among the various body structures lying in the path of the x-ray beam

Answer 12

Subject Contrast

Question 13

Image Receptors (IR) can either be ______ or _______

Answer 13

Film Cassettes, CR IP (Computerized Radiography Imaging Plates)

Question 14

one element that remains constant and will determine radiographic contrast

Answer 14

Differential Absorption of Subject Contrast

Question 15

denotes the inherent sensitivity a given emulsion has to variations in the intensity of remnant photons striking its surface

Answer 15

Film Contrast

Question 16

Harmony must exist between ____ and ____ before a good radiographic result can be gained

Answer 16

Film and Subject Contrast

Question 17

durable protection layer

Answer 17

Super coat

Question 18

contains the black metallic silver,

radiation and light-sensitive layer

Answer 18

Emulsion

Question 19

adheres layers together

Answer 19

Adhesive

Question 20

polyester layer that gives the film physical stability

Answer 20

Film base

Question 21

made of mixture of gelatin and silver halide crystals (fluorine, chlorine, bromine and iodine)

Answer 21

Film Emulsion

Question 22

most of x-ray film emulsions are made of:

Answer 22

Silver Bromide (90%), Silver Iodine (10%)

Question 23

activated by light and radiation to create image

Answer 23

Photographically active layer

Question 24

the degree of blackness over the area being viewed

Answer 24

Radiographic density

Question 25

the third major characteristic

Answer 25

Sharpness or Definition

Question 26

the radiographic image has 2 types of detail:

Answer 26

Visibility of detail, Sharpness of detail

Question 27

how well we can see the structures that have been transferred to the film’s emulsion by the quantity and variation of remnant photons.

Answer 27

Visibility of detail

Question 28

The more pronounced/noticeable these absorption differences are,
the ______ the subject contrast will be.

Answer 28

greater

Question 29

Other things remaining constant, the _______________ will determine radiographic
contrast.

Answer 29

degree of differential absorption (subject contrast)

Question 30

Assuming all factors are held constant – as subject contrast is increased, radiographic contrast will ______.

Answer 30

increase

Question 31

There must be an overall ______ present in the radiographic

image to produce optimal detail visualization

Answer 31

Density

Question 32

It is obtained when a sufficient accumulation of black metallic silver
crystals is present in the film

Answer 32

Density

Question 33

The accumulation of silver is directly related to the number of _________ that struck the film during an exposure

Answer 33

remnant photons

Question 34

if a small number of x-ray photons strike the film, the
accumulation of black silver crystals will be ____ and when the film is placed on the x-ray illuminator, the eye will have great _____ seeing the intended detail

Answer 34

sparse,

difficulty

Question 35

If a remnant beam is sufficiently intense, the overall accumulation
of silver would be ______ along with associated detail.

Answer 35

evident

Question 36

The film’s inherent ability to emphasize intensities of the remnant
beam will determine _________

Answer 36

Radiographic Contrast