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Positioning > Preliminary Info > Flashcards

Preliminary Info Flashcards

1
Q

Image receptor

A

Device that receives the energy of the x-ray beam and forms the image of the body part

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2
Q

Solid-state digital detector (DR)

A

Uses flat-panel IR to convert x-ray energy into a digital signal

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3
Q

Photostimulable storage phosphor image plate

A

Device used for computed radiography similar to conventional intensifying screen

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4
Q

Fluoroscopic IR

A

Designed for real time imaging to guide procedures or capture full motion video

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5
Q

Cassette with film

A

Imprint on film and viewed with illuminator or view box

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6
Q

Grids and lead shields

A

Reduce scattered radiation to the IR

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7
Q

Compensating filters

A

Designed to compensate for significantly varied tissue thickness and density the within body part

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8
Q

Source to image receptor distance (SID)

A

Distance from an focal spot inside the x-ray tube to the IR

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9
Q

Synarthrosis

A

Immovable

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10
Q

amphiarthrosis

A

Slightly movable

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11
Q

Diarthrosis

A

Freely movable

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12
Q

Synovial joints

A

Complex joints, like hinge, pivot, gliding, ellipsoid, saddle, and ball and socket

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13
Q

Sagittal plane

A

Divides body into left and right

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14
Q

Coronal plane

A

Divide body into anterior and posterior

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15
Q

Horizontal plane

A

Divide body into superior and inferior

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16
Q

projection

A

Path of the central Ray as it exits x-ray tube and goes through patient to IR

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17
Q

Axial projection

A

Tube angle

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18
Q

Tangential

A

Skims surface

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19
Q

Lateral projection

A

Enters one side of the body transversely, then exits opposite side

20
Q

True projection

A

Exact positioning

21
Q

Oblique projection

A

Enters at an angle

22
Q

Position has two meanings. What are they?

A
  1. Identify patient posture or general body position
  2. Refers to specific placement of body part in relation to radiation table or IR
23
Q

Recumbent

A

Lying down in any position

24
Q

Supine

A

Lying on back

25
Q

Prone

A

Lying face down

26
Q

Trendelenburg

A

Supine with head tilted downward

27
Q

Fowler

A

Supine position with head higher than feet

28
Q

Sims

A

Recumbent with patient lying on left anterior side (semi-prone) with left leg extended, and right knee and thigh partially flexed

29
Q

Lithotomy

A

The gyno position

30
Q

Decubitus

A

Lying on side

31
Q

View

A

Describe body part as seen by IR (opposite position)

32
Q

Method

A

Describes specific radiographic projection the individual develops

33
Q

Sthenic

A

50% of the population
Heart is moderately transverse
Stomach high, upper left
Moderately heavy build

34
Q

Hyposthenic

A

35% of the population
Ordinary/average
Most difficult to classify

35
Q

Asthenic

A

10% of the population
Heart nearly vertical and at midline
Lungs long, may be broader above base
Stomach, low, and medial and pelvis when standing
Frail build
Wide pelvis

36
Q

Hypersthenic

A

5% of the population
Diaphragm high
Colon around periphery of abdomen
Gallbladder high
Football player build
Narrow build

37
Q

Gliding joints

A

Uniaxial movement, simplest synovial, joint flattened or slightly curved surfaces
(Example: wrist and foot)

38
Q

Hinge joint

A

Uniaq seal movement permits, only flexion and extension like a door
(Example: elbow, knee, ankle)

39
Q

Pivot joint

A

Uniaxial movement only rotation around single axis
(Example: axis of cervical spine)

40
Q

Ellipsoid joint

A

Biaxial movement
(example: radio carpool joints of wrist)

41
Q

Saddle joint

A

Biaxial movement
(example: only thumb)

42
Q

Ball and socket

A

Multi axial movement
(example: hip and shoulder)

43
Q

Caudad

A

Parts away from head

44
Q

Cephalad

A

Parts toward the head

45
Q

Cephalad

A

Parts toward the head

Positioning (6 decks)

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