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Imaging midterm
66問 • 3ヶ月前
  • 21harmorhe
    • 通報

    問題一覧

  • 1

    Elongation maker the object appear

    Longer

  • 2

    The part is improperly aligned

    Foreshortening

  • 3

    As you increase filteration contrast

    Decreases

  • 4

    SID alters the intensity of the beam reaching the image

    True

  • 5

    What formula is used to double or half an exposure

    15% rule

  • 6

    mAs is a prime factor

    True

  • 7

    Changes in exposure time length will affect the total number of electrons passing from cathode to anode per second

    True

  • 8

    Solve for time 100mAs=125mA x Sec

    .8 seconds

  • 9

    As kVp increase contrast

    Decreases

  • 10

    As kVp decreases contrast

    Increases

  • 11

    If an object measures 2cm and the image measures 6cm what is the percent of magnification

    200%

  • 12

    Contrast media increases subject contrast by

    Introducing a greater difference in atomic number variations than naturally

  • 13

    Increase kVp does what to IR exposure

    Increases

  • 14

    As penumbra (unsharpness) increases what effect does it have on recorded detail

    Decreases

  • 15

    Your IR exposure on your image will be what when you use a grid

    Less

  • 16

    A thicker body part results in a Scale and. Contrast

    Long scale and low contrast

  • 17

    As mAs increase IR exposure

    Increases

  • 18

    Increasing grid ratio, increasing collimation, decreasing kVp, decreasing filteration Increase

    Contrast

  • 19

    If the amount of scatter increases what happens to contrast

    Decrease

  • 20

    Higher ratio grids remove more scatter

    True

  • 21

    When using anode heel affect to you advantage which side of the tube goes over the thicker part of body

    Cathode

  • 22

    What doesn’t effect the amount of IR exposure

    Focal spot

  • 23

    What is the difference in size distortion and shape distortion

    Size distortion is the misrepresentation of the size shape distortion is the misrepresentation of the shape

  • 24

    Any change in IR exposure will affect contrast

    True

  • 25

    What does lp/mm stand for

    Line pairs per millimeter

  • 26

    The more lp/mm the more spatial resolution there will be

    True

  • 27

    What is another word for magnification

    Size distortion

  • 28

    Relationship between IR exposure and anatomical part (thickness/type of tissue)

    Inverse relationship

  • 29

    Image resolution is primary controlled by the focal spot because the focal spot controls

    Penumbra

  • 30

    Exposure maintaince formula

    mAs1/mAs2=(D1)2/(D2)2

  • 31

    Exposure maintence formula is used to show

    The relationship between distance and IR exposure

  • 32

    Low kVp and few shades of gray

    High contrast short scale

  • 33

    High kVp and lots of shades of grey

    Low contrast long scale

  • 34

    What is contrast scale

    Number of useful visible shades of gray on the film

  • 35

    Prime controller of IR exposure

    mAs

  • 36

    What effects X-ray emission and is under control of radiographer

    SID

  • 37

    What factors affect the shape of the anatomical part that is being recorded on the body

    Alignment of the part central ray IR

  • 38

    Increase in collimation does what to IR exposure

    Decrease

  • 39

    Increasing SID does what to spatial resolution

    Increases

  • 40

    Increasing OID does what to spatial resolution

    Decreases

  • 41

    Increased collimation increases contrast

    True

  • 42

    Increased photon penetrabillity results in what to contrast

    Decrease

  • 43

    Primary factor of contrast

    kVp

  • 44

    What scale of contrast is produced with high kVp

    Long

  • 45

    Five influencing factors of contrast

    Distance filteration collimation anatomical part grids

  • 46

    As grid ratio decreases contrast

    Decreases

  • 47

    Three factors that control subject contrast

    kVp amount of tissue type of material

  • 48

    Primary unit of resolution

    Line pairs per millimeter

  • 49

    Geometric unsharpness around image

    Penumbra

  • 50

    Best way to reduce voluntary patient movement

    Communication

  • 51

    Insufficient number of photons reaching IR

    Quantrum mottle

  • 52

    Definition of IR exposure

    The amount of photons that reach the IR

  • 53

    Too many photons reaching the IR

    Overexposure

  • 54

    Amount of change in mAs needed to produce visible change in density

    30%

  • 55

    Three things that need to be aligned to mimimize distortion

    Body part central ray IR

  • 56

    Situation where shape distortion is intentional

    Lordotic chest

  • 57

    Term meaning degree of magnification

    Magnification factor

  • 58

    What primary factor is the primary controller of X-ray quantity and IR exposure

    mAs

  • 59

    No grid GCF

    1

  • 60

    5:1 grid

    2

  • 61

    6:1 grid

    3

  • 62

    8:1 grid

    4

  • 63

    10:1 and 12:1 grid

    5

  • 64

    16:1 grid

    6

  • 65

    The three primary factors

    mAs kVp SID

  • 66

    Exposure maintence formula

    mAs1/mAs2=(D1)2/(D2)2

    • unit 2

    unit 2

    21harmorhe · 24問 · 4ヶ月前

    unit 2

    unit 2

    24問 • 4ヶ月前
    21harmorhe

    Abdominal Cavity’s

    Abdominal Cavity’s

    21harmorhe · 29問 · 4ヶ月前

    Abdominal Cavity’s

    Abdominal Cavity’s

    29問 • 4ヶ月前
    21harmorhe

    Quadrants and organs within them

    Quadrants and organs within them

    21harmorhe · 21問 · 4ヶ月前

    Quadrants and organs within them

    Quadrants and organs within them

    21問 • 4ヶ月前
    21harmorhe

    CONTRAST

    CONTRAST

    21harmorhe · 27問 · 3ヶ月前

    CONTRAST

    CONTRAST

    27問 • 3ヶ月前
    21harmorhe

    Abdominal regions

    Abdominal regions

    21harmorhe · 22問 · 3ヶ月前

    Abdominal regions

    Abdominal regions

    22問 • 3ヶ月前
    21harmorhe

    Abdominal regions 2

    Abdominal regions 2

    21harmorhe · 9問 · 3ヶ月前

    Abdominal regions 2

    Abdominal regions 2

    9問 • 3ヶ月前
    21harmorhe

    Upper extremity

    Upper extremity

    21harmorhe · 54問 · 3ヶ月前

    Upper extremity

    Upper extremity

    54問 • 3ヶ月前
    21harmorhe

    Intro unit 2

    Intro unit 2

    21harmorhe · 44問 · 3ヶ月前

    Intro unit 2

    Intro unit 2

    44問 • 3ヶ月前
    21harmorhe

    Hand and wrist pathology

    Hand and wrist pathology

    21harmorhe · 13問 · 3ヶ月前

    Hand and wrist pathology

    Hand and wrist pathology

    13問 • 3ヶ月前
    21harmorhe

    Procedures joints

    Procedures joints

    21harmorhe · 22問 · 3ヶ月前

    Procedures joints

    Procedures joints

    22問 • 3ヶ月前
    21harmorhe

    Joints and their structure

    Joints and their structure

    21harmorhe · 14問 · 3ヶ月前

    Joints and their structure

    Joints and their structure

    14問 • 3ヶ月前
    21harmorhe

    long bone

    long bone

    21harmorhe · 21問 · 3ヶ月前

    long bone

    long bone

    21問 • 3ヶ月前
    21harmorhe

    Upper extremity positioning

    Upper extremity positioning

    21harmorhe · 18問 · 3ヶ月前

    Upper extremity positioning

    Upper extremity positioning

    18問 • 3ヶ月前
    21harmorhe

    Imaging equations

    Imaging equations

    21harmorhe · 16問 · 3ヶ月前

    Imaging equations

    Imaging equations

    16問 • 3ヶ月前
    21harmorhe

    Intro ch 9

    Intro ch 9

    21harmorhe · 77問 · 3ヶ月前

    Intro ch 9

    Intro ch 9

    77問 • 3ヶ月前
    21harmorhe

    Dose limits

    Dose limits

    21harmorhe · 12問 · 3ヶ月前

    Dose limits

    Dose limits

    12問 • 3ヶ月前
    21harmorhe

    Intro ch9

    Intro ch9

    21harmorhe · 8問 · 3ヶ月前

    Intro ch9

    Intro ch9

    8問 • 3ヶ月前
    21harmorhe

    Intro 9 Regulatory agency

    Intro 9 Regulatory agency

    21harmorhe · 6問 · 3ヶ月前

    Intro 9 Regulatory agency

    Intro 9 Regulatory agency

    6問 • 3ヶ月前
    21harmorhe

    Intro 9

    Intro 9

    21harmorhe · 19問 · 3ヶ月前

    Intro 9

    Intro 9

    19問 • 3ヶ月前
    21harmorhe

    問題一覧

  • 1

    Elongation maker the object appear

    Longer

  • 2

    The part is improperly aligned

    Foreshortening

  • 3

    As you increase filteration contrast

    Decreases

  • 4

    SID alters the intensity of the beam reaching the image

    True

  • 5

    What formula is used to double or half an exposure

    15% rule

  • 6

    mAs is a prime factor

    True

  • 7

    Changes in exposure time length will affect the total number of electrons passing from cathode to anode per second

    True

  • 8

    Solve for time 100mAs=125mA x Sec

    .8 seconds

  • 9

    As kVp increase contrast

    Decreases

  • 10

    As kVp decreases contrast

    Increases

  • 11

    If an object measures 2cm and the image measures 6cm what is the percent of magnification

    200%

  • 12

    Contrast media increases subject contrast by

    Introducing a greater difference in atomic number variations than naturally

  • 13

    Increase kVp does what to IR exposure

    Increases

  • 14

    As penumbra (unsharpness) increases what effect does it have on recorded detail

    Decreases

  • 15

    Your IR exposure on your image will be what when you use a grid

    Less

  • 16

    A thicker body part results in a Scale and. Contrast

    Long scale and low contrast

  • 17

    As mAs increase IR exposure

    Increases

  • 18

    Increasing grid ratio, increasing collimation, decreasing kVp, decreasing filteration Increase

    Contrast

  • 19

    If the amount of scatter increases what happens to contrast

    Decrease

  • 20

    Higher ratio grids remove more scatter

    True

  • 21

    When using anode heel affect to you advantage which side of the tube goes over the thicker part of body

    Cathode

  • 22

    What doesn’t effect the amount of IR exposure

    Focal spot

  • 23

    What is the difference in size distortion and shape distortion

    Size distortion is the misrepresentation of the size shape distortion is the misrepresentation of the shape

  • 24

    Any change in IR exposure will affect contrast

    True

  • 25

    What does lp/mm stand for

    Line pairs per millimeter

  • 26

    The more lp/mm the more spatial resolution there will be

    True

  • 27

    What is another word for magnification

    Size distortion

  • 28

    Relationship between IR exposure and anatomical part (thickness/type of tissue)

    Inverse relationship

  • 29

    Image resolution is primary controlled by the focal spot because the focal spot controls

    Penumbra

  • 30

    Exposure maintaince formula

    mAs1/mAs2=(D1)2/(D2)2

  • 31

    Exposure maintence formula is used to show

    The relationship between distance and IR exposure

  • 32

    Low kVp and few shades of gray

    High contrast short scale

  • 33

    High kVp and lots of shades of grey

    Low contrast long scale

  • 34

    What is contrast scale

    Number of useful visible shades of gray on the film

  • 35

    Prime controller of IR exposure

    mAs

  • 36

    What effects X-ray emission and is under control of radiographer

    SID

  • 37

    What factors affect the shape of the anatomical part that is being recorded on the body

    Alignment of the part central ray IR

  • 38

    Increase in collimation does what to IR exposure

    Decrease

  • 39

    Increasing SID does what to spatial resolution

    Increases

  • 40

    Increasing OID does what to spatial resolution

    Decreases

  • 41

    Increased collimation increases contrast

    True

  • 42

    Increased photon penetrabillity results in what to contrast

    Decrease

  • 43

    Primary factor of contrast

    kVp

  • 44

    What scale of contrast is produced with high kVp

    Long

  • 45

    Five influencing factors of contrast

    Distance filteration collimation anatomical part grids

  • 46

    As grid ratio decreases contrast

    Decreases

  • 47

    Three factors that control subject contrast

    kVp amount of tissue type of material

  • 48

    Primary unit of resolution

    Line pairs per millimeter

  • 49

    Geometric unsharpness around image

    Penumbra

  • 50

    Best way to reduce voluntary patient movement

    Communication

  • 51

    Insufficient number of photons reaching IR

    Quantrum mottle

  • 52

    Definition of IR exposure

    The amount of photons that reach the IR

  • 53

    Too many photons reaching the IR

    Overexposure

  • 54

    Amount of change in mAs needed to produce visible change in density

    30%

  • 55

    Three things that need to be aligned to mimimize distortion

    Body part central ray IR

  • 56

    Situation where shape distortion is intentional

    Lordotic chest

  • 57

    Term meaning degree of magnification

    Magnification factor

  • 58

    What primary factor is the primary controller of X-ray quantity and IR exposure

    mAs

  • 59

    No grid GCF

    1

  • 60

    5:1 grid

    2

  • 61

    6:1 grid

    3

  • 62

    8:1 grid

    4

  • 63

    10:1 and 12:1 grid

    5

  • 64

    16:1 grid

    6

  • 65

    The three primary factors

    mAs kVp SID

  • 66

    Exposure maintence formula

    mAs1/mAs2=(D1)2/(D2)2