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xray positioning > Lumbar Exam > Flashcards

Lumbar Exam Flashcards

1
Q

what are the structures demonstrated on an AP lumbosacral view

A

T12-mid sacrum

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2
Q

where do you measure for an AP lumbosacral view

A

at the thickest part of the abdomen or at the level of the umbilicus

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3
Q

what is the film size for an AP lumbosacral view

A

14x17

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4
Q

what is the SID/FFD for an AP lumbosacral view

A

40”

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5
Q

what is the central ray angle for an AP lumbosacral view

A

none

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6
Q

what is the central ray for an AP lumbosacral view

A

horizontal 11/2” below the top of the iliac crest (2 fingers below)

vertical through the midline of the body (use xiphoid process as a landmark)

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7
Q

what is the pt position for an AP lumbopelvic

A
  1. upright standing, back lightly touching bucky
  2. feet comfortably apart
  3. true AP without rotation or tilt
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8
Q

what is the pt management for an AP lumbosacral

A

use filter or shield

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9
Q

what is the collimation for an AP lumbosacral view

A

length T12-ASIS
width ASIS and both SI joints

9x16

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10
Q

what are the breathing instructions for an AP lumbosacral

A

suspended expiration

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11
Q

what are the structures demonstrated for a lateral lumbar

A

T12-mid sacrum

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12
Q

where do you measure for a lateral lumbar

A

at the level of ASIS

always measure from behind the pt

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13
Q

what is the film size for a LL

A

14x17

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14
Q

what is the SID/FFD

A

40”

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15
Q

what is the pt position for a LL

A
  1. upright, standing left lateral
  2. feet comfortably apart
  3. true lateral without rotation or tilt (lateral flexion)
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16
Q

what is the pt position for a LL

A

put arms in a position that moves them out of the field of interest

17
Q

what is the central ray angle for a LL

A

none

18
Q

what is the central ray for an LL

A

horizontal 11/2” above the top of the iliac crest

vertical at the top of the iliac position so that the spine is in the center of the film

19
Q

what is the collimation for an LL

A

length T12-1/2 between ASIS and greater trochanters
width ASIS to PSIS

10x16

20
Q

what are the breathing instructions for a LL

A

suspended expiration

21
Q

what are the structures demonstrated on an L5/S1 lateral spot shot

A

L5-S1 joint space

good projection to rule out spondylolisthesis

22
Q

where do you measure for an L5/S1 lateral spot shot

A

place hand on iliac crest and roll down

23
Q

what is the film size for an L5/S1 lateral spot shot

A

8x10

24
Q

what is the SID/FFD for a L5/S1 lateral spot shot

A

40”

25
Q

what is the central ray angle for an L5/S1 lateral spot shot

A

none

26
Q

what is the central ray for a L5/S1 lateral spot shot

A

vertical-halfway between the ASIS and PSIS

or look to the lateral lumbar projection to be exact

horizontal-1 inch below the iliac crest

27
Q

what is the pt position for an L5/S1 lateral lumbar

A

upright

lateral position, feet comfortably apart

28
Q

what is the collimation for a L5/S1 lateral spot shot

A

6x8

29
Q

what are the breathing instructions for a L5/S1 lateral spot shot

A

suspended expiration

xray positioning (4 decks)

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