Rad

Question 1

Digital images are a numeric representation of the x-ray intensities that are transmitted through the patient?

Answer 1

T

Question 2

Digital imaging systems have a narrow dynamic range?

Answer 2

F

Question 3

Digital processing involve the systematic application of highly complex mathematical formulas called?

Answer 3

Algorithms

Question 4

The range or level of image contrast in the digital image is primarily controlled by?

Answer 4

Digital processing

Question 5

Exposure latitude with the digital imaging is more wider or narrow when compared with analog imaging?

Answer 5

Wider

Question 6

List the six image quality factors to you evaluate digital image

Answer 6

Brightness, distortion, contrast, exposure indicator, spatial resolution, noise,.

Question 7

Individual Imogene the term what replaces density as applied in analog film based imaging?

Answer 7

Brightness

Question 8

Changes in MAs do not have a primary controlling effect on digital image brightness?

Answer 8

True

Question 9

Brightness cannot be altered in the digital image once it has been processed?

Answer 9

F

Question 10

A digital imaging systems ability to distinguish between similar tissues is termed

Answer 10

Contrast resolution

Question 11

Radiographic contrast in the digital image is primarily affected by

Answer 11

Application of processing algorithms

Question 12

The greater the bit death of a digital imaging system the greater the

Answer 12

Contrast resolution

Question 13

List the term describing the two pixel size is used in digital imaging

Answer 13

Acquisition pixel size and display pixel size

Question 14

Which one of the two pixel sizes is most critical in maintaining high-resolution digital imaging

Answer 14

Acquisition pixel

Question 15

Focal spot size has no impact on the resolution of the digital image

Answer 15

False

Question 16

The current range of spatial resolution for digital radiographic imaging systems is between

Answer 16

2.5 LP/millimeters 5.0 lp/millimeters

Question 17

In addition to acquisition pixel size spatial resolution in the digital image is controlled by?

Answer 17

Display matrix

Question 18

The factors that affect image distortion for the digital image are different from those that affect filmscreen systems?

Answer 18

F

Question 19

A numeric value that is representative of the exposure the digital image receptor receives is termed the?

Answer 19

Exposure indicator

Question 20

List The four factors that affect the exposure indicator in the digital image?

Answer 20

MAs, KV, total detector area irradiated, objects exposed.

Question 21

If the recommended exposure indicator range for I will expose images between 150 and 250, a value of 350 would indicate what?

Answer 21

Under exposure

Question 22

If the recommended exposure indicator ranges between 2.0 and 2.4, then a value of 1.2 indicates?

Answer 22

Under exposure

Question 23

Very find the exposure indicator for each exposure is essential in producing quality digital images with the?

Answer 23

Least possible dose to patient

Question 24

A random disturbance that obscures or reduces clarity is the definition of?

Answer 24

Noise

Question 25

SNR is the acronym for?

Answer 25

Signal to noise ratio

Question 26

When insufficient MAs is applied in the production of a digital image it produces a what?

Answer 26

Low image

Question 27

Another term for image noise is

Answer 27

Mottle

Question 28

Changing or enhancing the electronic image to improve its diagnostic quality is called?

Answer 28

Post processing

Question 29

Identify the top of postprocessing described by listing the correct term for the following definition. Adding text to images means?

Answer 29

Annotation

Question 30

Increasing brightness along the margins of structures to increase the visibility of the edges?

Answer 30

Edge enhancement

Question 31

Reversing the dark and light pixel values of an image is

Answer 31

Image Reversal

Question 32

Enlarging all or part of an image is

Answer 32

Magnification

Question 33

The application of specific image processing to reduce the display of noise in an image

Answer 33

Smoothing

Question 34

Removing background anatomy to allow visualization of contrast media field structures?

Answer 34

Subjection

Question 35

List the three components of a Photos stimulable storage phosphor plate system (PSP-CR)?

Answer 35

Image plates, IP reader, technologist or workstation.

Question 36

A PSP based digital imaging system may be cassette based or cassette less?

Answer 36

True

Question 37

The term describing the image being transmitted to digital archive for viewing in reading by the referring physician or radiologist is?

Answer 37

Image archiving

Question 38

When using a PSP image plate, patient data can be linked to the image by use of AN?

Answer 38

Barcode reader

Question 39

What's the PSP image plate has had an image recorded on it, it must be discarded?

Answer 39

F

Question 40

The Latent image on a PSP image plate is read by a lazer within the CR reader?

Answer 40

T

Question 41

The greater the exposure to the plate, the greater the intensity of the light emitted from the plate during the reading process?

Answer 41

T

Question 42

Any residue latent image is he erased on the PSP image plate by applying?

Answer 42

Bright light

Question 43

The process of transferring the digital image to a storage device is what?

Answer 43

Archiving

Question 44

Which one of the following technical factors does not apply to digital imaging?

Answer 44

A minimum of 72 inches is required for all projections

Question 45

50% of the IP must be exposed to produce a correct reading of the image?

Answer 45

F

Question 46

The use of grades is optional with PSP because the IP is not as sensitive to a scatter radiation as analog radiography

Answer 46

F

Question 47

Which of the following Imogene component is not required with direct digital radiography?

Answer 47

IP and Image Reader

Question 48

Patient those may be lower with if FPD- TFT as compared with analog radiography?

Answer 48

T

Question 49

When using FPD-TFT for most non-grid procedures one reason the grid is generally not removed is it's fragile construction?

Answer 49

F

Question 50

FPD-TFT and PS P-based systems does not provide the ability to view a previous image to evaluate for positioning errors and confirm the exposure indicator?

Answer 50

F

Question 51

In addition to FPD-TFT and PS PBase systems a third type of system is used to acquire radiographic images digitally which is?

Answer 51

CCD based systems

Question 52

24 x 30 cm is?

Answer 52

10 x 12"

Question 53

18 x 24 cm is?

Answer 53

8 x 10"

Question 54

35 x 43 cm?

Answer 54

14 x 17"

Question 55

30 x 35 cm?

Answer 55

11 x 14"

Question 56

24 x 24 cm?

Answer 56

9 x 9"

Question 57

18 x 43 cm?

Answer 57

7 x 17"

Question 58

The size of the image receptor used is dependent primarily on the size of the body part examined?

Answer 58

T

Question 59

Define the acronym PACS?

Answer 59

Picture archiving communication system

Question 60

DICOM?

Answer 60

Digital imaging and communication in medicine

Question 61

RIS?

Answer 61

Radiology info system

Question 62

HIS?

Answer 62

Hospital info system

Question 63

HL7?

Answer 63

Health level 7

Question 64

The electronic transmission of diagnostic imaging studies is termed?

Answer 64

Teleradiography

Question 65

What receptor is made with amorphis selenium or amorphis silicon?

Answer 65

FPD-TFT

Question 66

Series of boxes that gives form to the image?

Answer 66

Display matrix

Question 67

Range of exposure intensities that produce an acceptable image?

Answer 67

Exposure latitude

Question 68

The user adjusting the window level and window width?

Answer 68

Windowing

Question 69

Unsharp edges of the projected image?

Answer 69

Penumbra

Question 70

Numeric value that is representative of the exposure the image receptor received in digital radiography?

Answer 70

Exposure indicator

Question 71

Representative of the number of shades of gray that can be demonstrated by each pixel?

Answer 71

Bit depth

Question 72

Misrepresentation of objects size or shape as projected onto radiographic recording media?

Answer 72

Distortion

Question 73

Controls the energy of the x-ray beam?

Answer 73

KV

Question 74

Random disturbance that obscures or reduces clarity?

Answer 74

Noise

Question 75

The recorded sharpness of structures on the image?

Answer 75

Spatial resolution

Question 76

Changing or enhancing the electronic image to view it from a different perspective or improve its diagnostic quality?

Answer 76

Post processing

Question 77

RIS?

Answer 77

Radiology info system

Question 78

IR?

Answer 78

Image receptor

Question 79

OID?

Answer 79

Object image receptor distance

Question 80

DR?

Answer 80

Digital radiography

Question 81

AEC?

Answer 81

Automatic exposure control

Question 82

HIS?

Answer 82

Hospital info system

Question 83

Term used by certain equipment many factors to imply exposure indicators?

Answer 83

Exposure level

Question 84

Range of exposure intensities that will produce an acceptable image?

Answer 84

Exposure latitude

Question 85

Random disturbance that obscures or reduces slightly?

Answer 85

Noise

Question 86

The point of least distortion of the projected image?

Answer 86

Central Ray

Question 87

the user adjusting the window level and window width?

Answer 87

Windowing

Question 88

Series of boxes that give form to the image?

Answer 88

Display matrix

Question 89

Representative of the number of shades of gray that can be demonstrated by each pixel?

Answer 89

Bit-depth

Question 90

Digital imaging requires the images be chemically processed?

Answer 90

F