Unit 2

Question 1

What are the 3 primary factors you control at the control panel?

Answer 1

kVp
mA
Exposure time

Question 2

We want our OID to be as _____ as possible

Answer 2

small

Question 3

the CR is always centered to the ___

Answer 3

IR

Question 4

SID is the ….

Answer 4

(sourse to image distance) distance from the xray tube to the IR

Question 5

Longer SID reduces _______ and increases _______ _______

Answer 5

magnification, recorded detail

Question 6

____ inches is traditionally used on most exams

Answer 6

40

Question 7

____ inches is used on exams with increased OID to reduce magnification

Answer 7

72

Question 8

Object to Image distance (OID) is…

Answer 8

how far the body part is from the IR

Question 9

Umbra

Answer 9

sharpness

Question 10

Penumbra

Answer 10

Unsharpness

Question 11

Density

Answer 11

the overall blackness of a film

Question 12

Radiolucent

Answer 12

Appears black (thinner tissues)

Question 13

Radiopaque

Answer 13

Appears white (thicker tissues)

Question 14

mAs is..

Answer 14

(mA) * seconds

Question 15

kVp

Answer 15

measure of electric potential

Question 16

Short scale contrast

Answer 16

high contrast

Question 17

Decreasing kVp produces _______ contrast

Answer 17

higher

Question 18

higher contrast = more ____________

Answer 18

black & white

Question 19

recorded detail

Answer 19

sharpness

Question 20

the mahor controlling factor of sharpness is:

Answer 20

focal spot size

Question 21

distortion

Answer 21

misrepresentation of the true size or shape of a structure

Question 22

What are the 3 types of motion?

Answer 22

Involuntary
Voluntary
Equipment

Question 23

Primary control for Involuntary Motion is:

Answer 23

use as short of exposure time as possible

Question 24

Primary control factor for Voluntary Motion is:

Answer 24

giving clear instructions

Question 25

Radiographs are usually viewed in _______ ______

Answer 25

anatomic position

Question 26

On digital, brightness is the equivalent of _______

Answer 26

density

Question 27

On digital, grayscale is the equivalent of _______

Answer 27

contrast

Question 28

On digital, spatial resolution is the equivalent of _______

Answer 28

detail

Question 29

Primary controlling factor of spatial resolution

Answer 29

pixels

Question 30

Deterioration of image be unwanted interference in x-ray signal detection

Answer 30

image noise