Radiography RT

Question 1

When the minute silver grains on which the x-ray film image is formed group together in a relatively large glasses, they produce a visual impression called

Answer 1

Graininess

Question 2

A curie is the equivalent of

Answer 2

37 GBq

Question 3

Very short wavelength electromagnetic radiation produced when electrons traveling at high speed collide with matter is called

Answer 3

X radiation

Question 4

Short wavelength electromagnetic radiation produced during the disintegration of the nuclei of radioactive substances is called

Answer 4

Gamma radiation

Question 5

A sheet of lead with an opening cut in the shape of the part to be radiographed maybe used to decrease the effect of scattered radiation which undercuts the specimens. Such a device is called

Answer 5

Mask

Question 6

The density difference between to selected portions of the radiograph is known as

Answer 6

Radiographic contrast

Question 7

The sharpness of the outline in the image of the radiograph is a measure of

Answer 7

Radiographic definition

Question 8

To neutralize the developer and stop the developing process is the purpose of the

Answer 8

Stop bath

Question 9

A thin metallic sheet such as brass,copper,lead, etc. placed at the source to reduce the effects of softer radiation is known as

Answer 9

Filter

Question 10

Degree of film blackening on a radiographic image is the

Answer 10

Density

Question 11

To produce x-rays, electrons are accelerated to a high velocity by an electrical field and then suddenly stopped by a collision with a solid body. This body is called

Answer 11

Target

Question 12

The term used to describe the loss of excess energy by the nucleus of radioactive atoms is called

Answer 12

Decay (disintegration)

Question 13

The term used to express the number of curies of radioactivity per gram per ounce of source weight is

Answer 13

Specific activity

Question 14

To remove all the undeveloped silver salts of the emulsion, to leave the developed silver as a permanent image, and to harden the gelatin is the function of the

Answer 14

Fixing

Question 15

Penetrating ability of an x-ray beam is governed by

Answer 15

Kilovoltage

Question 16

The small area in the x-ray tube from which the radiation emanates is called the

Answer 16

Focal spot

Question 17

The range of specimen thickness that can be adequately recorded on the radiograph is called

Answer 17

Latitude

Question 18

A device which is basically a combination of a magnet and a transformer designed to guide and accelerate electrons in a circular orbit to very high energies is called

Answer 18

Betatron

Question 19

A curve that relates density with the logarithm of exposure or relative exposure is called

Answer 19

Characteristic curve

Question 20

A qualitative term often used to indicate the size of the smallest detail that can be seen in a radiograph is

Answer 20

Radiographic sensitivity

Question 21

The slope (steepness) of a characteristic logarithm of exposure or of relative curve is a measure of

Answer 21

Radiographic contrast

Question 22

A special radiographic method requiring to radiographs taken during separate exposures from two different positions to give the visual impression of a three-dimensional display when viewed in an optical device simultaneously is called

Answer 22

Stereoradiography