Exam 5

Question 1

mAs increases-

Answer 1

receptor exposure

Question 2

mAs-

Answer 2

total exposure

Question 3

kVp-

Answer 3

penetrating ability of the beam

Question 4

kVp increases-

Answer 4

receptor exposure

Question 5

kVp decreases-

Answer 5

contrast

Question 6

kVp increases, the scale of contrast-

Answer 6

gets longer

Question 7

kVp decreases, the scale of contrast-

Answer 7

gets shorter

Question 8

kVp only affects-

Answer 8

visibility properties

Question 9

motion caused by (2)-

Answer 9

voluntary & involuntary motion

Question 10

voluntary motion-

Answer 10

breathing

Question 11

involuntary motion-

Answer 11

heartbeat/peristalsis

Question 12

motion increases-

Answer 12

-unsharpness
-penumbra/blur
-contrast only where motion occurs on img.

Question 13

Motion decreases-

Answer 13

-spatial resolution
-image sharpness

Question 14

focal spot size is confined ONLY to-

Answer 14

spatial resolution

Question 15

focal spot size decreases-

Answer 15

spatial resolution

Question 16

focal spot size increases

Answer 16

Unsharpness

Question 17

SID increases-

Answer 17

spatial resolution

Question 18

SID increases, spatial resolution increases, which results in-

Answer 18

less magnification (size distortion)

Question 19

SID decreases-

Answer 19

-receptor exposure
-distortion
-intensity

Question 20

OID increases-

Answer 20

-contrast
-size distortion
-magnification

Question 21

OID decreases-

Answer 21

-spatial resolution
-receptor exposure

Question 22

2 types of tube filtration-

Answer 22

inherent & added

Question 23

added filtration-

Answer 23

intentionally added to image, can add compensating filter

Question 24

added filtration filters (3)-

Answer 24

boomerang, wedge, & trough

Question 25

wedge filter-

Answer 25

balances exposure, small on one end & large on other

Question 26

tube filter/filtration increases-

Answer 26

contrast

Question 27

tube filter/filtration decreases-

Answer 27

receptor exposure (the thicker the filter, the less exposure bec it absorbs x-ray beam)

Question 28

beam restriction purpose-

Answer 28

decrease pt. exposure & dose & increase contrast

Question 29

beam restriction/collimation increases-

Answer 29

contrast

Question 30

beam restriction/collimation decreases-

Answer 30

-receptor exposure -scatter -quantity

Question 31

beam restriction/collimation affects-

Answer 31

production of scatter

Question 32

mA-

Answer 32

quantity being forced across x-ray tube

Question 33

grids-

Answer 33

absorbs scatter before it reaches IR

Question 34

Grid ratio increases-

Answer 34

-contrast -mAs

Question 35

Grid ratio decreases-

Answer 35

receptor exposure

Question 36

when using a grid, you would increase mAs to-

Answer 36

maintain receptor exposure

Question 37

when scatter increases, you get ______ contrast-

Answer 37

long scale of contrast

Question 38

grids have no affect on-

Answer 38

-spatial resolution -distortion

Question 39

anode heel affect-

Answer 39

variation of intensity along longitudinal axis of IR

Question 40

in anode heel affect, intensity increases toward _____ & decreases toward ______-

Answer 40

increases toward cathode & decreases toward anode

Question 41

exams that utilize anode heel affect-

Answer 41

any exam w: short SID & large field size or coll. opened up to 14x17

Question 42

elongation-

Answer 42

part & IR parallel to each other, but tube is angled

Question 43

foreshortening-

Answer 43

x-ray tube perp. to IR, but part not parallel to IR

Question 44

tube angle increases-

Answer 44

shape distortion

Question 45

tube angle decreases-

Answer 45

-spatial resolution -receptor exposure

Question 46

patient factors-

Answer 46

-pt. size -pathology -casts

Question 47

pt. factors increases-

Answer 47

magnification/distortion

Question 48

pt. factors decreases-

Answer 48

-receptor exposure -contrast -spatial resolution