Contrast

Question 1

either positive or negative significantly enhance contrast by altering how different tissue interact

Answer 1

constrast media

Question 2

refers to the process of removing low energy xrays from the beam before it reaches the patient

Answer 2

beam filtration

Question 3

are devices placed between the patient and the image receptor absorbe scatter radiation

Answer 3

Grids

Question 4

rfers to the restricting the size of the xray beam to the area of interest

Answer 4

collimation

Question 5

controls the penetrating power of the xray beam determining how easily xray pass through

Answer 5

kVp

Question 6

increased penetration meaning with a ____ the xray have enough energy to penetrate

Answer 6

Higher kVp

Question 7

more absorption: _____ results in greater tissue absorption, which reduces scatter radiation

Answer 7

Lower kVp

Question 8

contrast is _____ related to patient thickness

Answer 8

PATIENT THICKNESS

inversely

Question 9

significantly nhance contrast by altering how different tissues interact with the xray beam

Answer 9

Contrast Media

Question 10

have a high atomic number and absorb more xray appearing to white or light on the radiograph

Answer 10

positive contrast media
barium and iodine

Question 11

have a low atomic number and absorb fewer xray appearing dark on radiograph

Answer 11

negative contrast media
air carbon dioxide

Question 12

refers to the process of removing lower energy soft xray fromt hr beam before reaching the patient

Answer 12

Filtration / Beam Filtration

Question 13

remove low energy xray that are more likely to be absorbed
produces a higher energy beam

Answer 13

Increased Filtration

Question 14

allows more lower energy to pass through
this leads to increased contrast

Answer 14

Decreased Filtration

Question 15

are devices placed between the patient and the image receptor to absorb scatter radiation

Answer 15

Grids

Question 16

grid increase contrast

Answer 16

by reducing the amount of scatter radiation reaching the image receptor

Question 17

(12:1) absorb more scatter

Answer 17

higher grid ratio

Question 18

(6:1) provide less scatter

Answer 18

lower grid ratio

Question 19

refers to the restricting the size of the xray beam to the area of interest

Answer 19

Collimation

Question 20

smaller field size increase contrast by minimizing the production of scatter radiation

Answer 20

Increased Collimation

Question 21

larger field size decrease contrast as more scatter radiation is produced

Answer 21

decreased collimation

Question 22

the smaller the field size

Answer 22

the less scatter radiation is lroduced resulting in higher contrast