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203 MEDIMAGE - Lectures > 5. Lumbar Spine > Flashcards

5. Lumbar Spine Flashcards

1
Q

what is the SID for lumbar spine views

A

110cm

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2
Q

what is the kV for lumbar spine views

A

75-85kV

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3
Q

do you use grids for lumbar spine views

A

yes

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4
Q

what is the breathing instruction for lumbar spine views

A

suspend respiration on expiration

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5
Q

what is the CP for AP/PA lumbar spine view

for open and tight collimation

A

open collimation = perpendicular to the iliac crest

tight collimation = perpendicular to the lower costal margin midline, L3

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6
Q

what is the patient positioning for the AP/PA Lumbar spine views

in terms of rotation, what needs to be flexed

4 things

A

supine

check no rotation from end of the table

hips/knees flexed

no thorax/pelvis rotation = ASIS equidistant from the table

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7
Q

what is the image critique for AP/PA lumbar spine views in terms of positioning

in terms of what 3 thing shows no rotation, spinous processes and which joint spaces need to be open

5 things

A

no rotation = transverse process, SI joints and sacrum symmetrical

spinous process at midline

open intervertebral joint spaces

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8
Q

what is the image critique for AP/PA lumbar spine views in terms of area of interest

6 things

A

lumbar vertevral bodies

intervertebral joints

spinous and transverse processes

T12-S1

SI joint

Sacrum

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9
Q

what is the CP for Posterior/anterior oblique lumbar spine view

A

perpendicular to L3 of lower costal margin

3-5cm above iliac crest, 5cm medial to upside ASIS

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10
Q

what is the patient positioning for the Posterior/anterior oblique Lumbar spine views

in terms of patient body position, arms and body rotation

3 things

A

Recumbent or erect

Arm on side for exam raised on pillow

Body rot 45* towards affected side, use 45* sponge

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11
Q

what is the image critique for Posterior/anterior oblique lumbar spine views in terms of positioning

2 things

A

Zygapophyseal joints & pedicle centered on vert body

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12
Q

what is the image critique for Posterior/anterior oblique lumbar spine views in terms of area of interest

4 things

A

L1-L4/S1

Pedicle

Zygapophyseal joint (PO = downside, AO = upside)

Scottie dog elements

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13
Q

what is the CP for lateral lumbar spine view

for open and tight collimation

what is the angle if the spine isnt parallel

A

Perpendicular to spine long axis

Open collimation = Iliac crest (L4-5)

Tight collimation = 4cm above iliac crest lower costal margin (L3)

5-8* caudal angle if spine not parallel

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14
Q

what is the patient positioning for the lateral Lumbar spine views

in terms of patient body position, what needs to be flexed, sponge position

A

Recumbent/erect

Hips/knees flexed

Sponge under spine/waist so its parallel to table top

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15
Q

what is the image critique for lateral lumbar spine views in terms of positioning

3 things

A

Vertebral column parallel to IR

Intervertebral foramina & joint space open

No rotation

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16
Q

what is the image critique for lateral lumbar spine views in terms of area of interest

4 things

A

T12/L1 - distal Sacrum

L1-4 vert bodies

spinous processes

intervertebral joints & foramina

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17
Q

what is the CP for lateral L5-S1 lumbar spine view

what angle is used if spine isnt parallel

A

perpendicular to 4cm inferior to iliac crest, 5cm post to ASIS

5-8* caudal angle if spine not parallel

18
Q

what is the patient positioning for the lateral L5-S1 Lumbar spine views

3 things

A

Recumbent/erect

Hips/knees flexed

Support under waist = spine & table parallel

19
Q

what is the image critique for lateral L5-S1 lumbar spine views in terms of area of interest

3 things

A

Open L5-S1 vert bodies

intervertebral joint spaces & foramina

20
Q

what is the image critique for lateral L5-S1 lumbar spine views in terms of positioning

3 things

A

Intervertebral joint spaces & foramina open

No rotation

21
Q

what is the CP for AP axial L5-S1 lumbar spine view

what is the difference between the male and female angulation

A

30(male)-35 (Female) cranial

Midline ASIS level

22
Q

what is the patient positioning for the AP axial L5-S1 Lumbar spine views

A

Supine

Legs extended, support under knees

Check no rotation from end of table

23
Q

what is the image critique for AP axial L5-S1 lumbar spine views in terms of area of interest

2 things

A

L5-S1 joint space

SI joints

24
Q

what is the patient positioning for the AP axial L5-S1
Lumbar spine views

in terms of what shows no pelvic rotation

1 things

A

No pelvic rotation = SI joints equidistant from spine

25
Q

what is the CP for AP axial sacrum view

A

15* cranial

5cm superior to pubic symphysis

26
Q

what is the patient positioning for the AP axial sacrum view

in terms of patient body position, hips, knees, IR centering, pelvis

4 things

A

Supine

Hips/knees flexed

MSP centred at table/IR midline

No pelvis rot = ASIS equidistant from table

27
Q

what is the patient positioning for the AP axial sacrum view

2 things

A

Sacrum un-superimposed

Sacral foramina visible

28
Q

what is the image critique for AP axial sacrum view

2 things

A

Sacrum not foreshortened

Sacral foramina visible

29
Q

what is the CP for AP axial coccyx view

A

10* caudally

5cm superior to symphysis pubis

30
Q

what is the patient positioning for the AP axial coccyx view

in terms of table alignment, rotation, knees

4 things

A

Supine

Support under knees

MSP aligned w/ table midline

No rotation

31
Q

what is the patient positioning for the AP axial coccyx view

2 things

A

Coccyx un-superimposed

No rotation

32
Q

what is the image critique for AP axial coccyx view in terms of area of interest

2 things

A

Coccyx not foreshortened

Coccyx region free of gas/stool

33
Q

what is the CP for lateral sacrum & coccyx view

A

perpendicular 8-10cm posterior to ASIS

34
Q

what is the patient positioning for the lateral sacrum & coccyx view

in terms of patient body, hips, knees, sponge placement, IR alignment

A

Recumbent

Hips/knees flexed

Sponge under spine/waist so its parallel to table top

Sacrum centred to table/IR midline

35
Q

what is the image critique for lateral sacrum & coccyx view in terms of positioning

A

No rotation = GSNs & femoral heads superimposed

36
Q

what is the image critique for lateral sacrum & coccyx view in terms of area of interest

3 things

A

Lateral profile of entire sacrum & coccyx

Lateral view of L5-S1 intervertebral joint

Femoral heads superimposed

37
Q

what is the CP for AP axial S1 view

A

30-35* cranial

5cm below ASIS level

38
Q

what is the patient positioning for the AP axial S1 view

in terms of patient body position, IR alignment, pelvis

A

Supine

MSP aligned to table/IR midline

No pelvis rot = ASIS equidistant from table

39
Q

what is the image critique for AP axial S1 view in terms of positioning

in terms of spinous process, rotation, alae, SI joints\

4 things

A

No rotation

L5 spinous process in centre of vertebral body

Symmetrical Alae

SI joints equidistant from vertebrae midline

40
Q

what is the image critique for AP axial S1 view in terms of area of interest

2 things

A

SI joints

L5-S1 intervertebral joints spaces

203 MEDIMAGE - Lectures (12 decks)

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