The patient as a beam Emitter

Question 1

Reduction in x-ray photons remaining in beam after passing through given thickness of materials called

Answer 1

attenuation

Question 2

Increased part thickness results in WHAT attenuation
A) decrease
b) increase

Answer 2

a

Question 3

Result of photoelectric absorption

a) no useful information
b) radiographic significant information

Answer 3

b

Question 4

Result of Compton scattering

a) no useful information
b) radiographic significant information

Answer 4

a

Question 5

the greatest variable the radiographer faces when performing a radiographic procedure is ?

Answer 5

The patient

Question 6

the four major substance for x-ray absorption is?

Answer 6

air, fat, muscle, bone

Question 7

Image receptor exposure will be altered by changes in amount or type of tissue being irradiated

a) density
b) contrast

Answer 7

a

Question 8

Degree of differential absorption resulting from differing absorption characteristics of tissues in body

a) contrast
b) density
c) subject detail

Answer 8

a

Question 9

Misrepresentation of the size and shape of anatomy due to its orientation to path of x-ray beam

Answer 9

subject distortion

Question 10

Increase tissue thickness, effective atomic number, and/or tissue density

a) destructive conditions
b) additive conditions

Answer 10

a

Question 11

k V p generally adequate for most additive conditions by how much percent

a) 3-10
b) 60-70
c) 5-15

Answer 11

c

Question 12

Decrease tissue thickness, effective atomic number, and/or tissue density

a) deconstructive conditions
b) additive conditions

Answer 12

a

Question 13

empyema, additive or destructive?

Answer 13

pus in thoracic cavity cause increase in tissue density

additive

Question 14

emphysema, additive or destructive?

Answer 14

decrease lung tissue density

destructive

Question 15

Atelectasis

Answer 15

collapse of lungs

Question 16

Chest
Atelectasis
Bronchiectasis
Cardiomegaly
Congestive heart failure (C H F)
Empyema
Pleural effusions
Hemothorax and hydrothorax

Additive or destructive

Answer 16

additive

Question 17

Abdomen
Aortic aneurysm
Ascites
Cirrhosis
Calcified stones

Additive or destructive

Answer 17

additive

Question 18

Chest
Emphysema
Large pneumothorax
C O P D
Abdomen
Aerophagia
Bowel obstruction
Ileus

Additive or destructive

Answer 18

destructive

Question 19

Extremities and skull
Active osteomyelitis
Aseptic necrosis
Carcinoma
Degenerative arthritis
Fibrosarcoma
Gout

Additive or destructive

Answer 19

destuctive

Question 20

are additive conditions directly or inversely related to the image receptor exposure?

Answer 20

Inversely

Question 21

are destructive conditions directly or inversely related to the image receptor exposure?

Answer 21

directly

Question 22

Generally at least a WHAT % loss in bone mineral density has taken place before it can be seen radiographically

Answer 22

50%

Question 23

A decrease of 25 - what percent in was will compensate for most pathological conditions

Answer 23

25-50%