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Radiology 122 > L-Spine, SI Joints, Sacrum/Coccyx Projections > Flashcards

L-Spine, SI Joints, Sacrum/Coccyx Projections Flashcards

1
Q

For AP L-Spine (intervertebral Disk) what is the cassette size?

A

14x17

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2
Q

For AP L-Spine (intervertebral Disk) what is the SID?

A

48”

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3
Q

For AP L-Spine (intervertebral Disk) what is the IR?

A

lumbar/sacrum @level iliac crest

lumbar only @ 1.5” above iliac crest

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4
Q

For AP L-Spine (intervertebral Disk) what is the CR?

A

Perpendicular to IR
lumbar/sacrum @level iliac crest
lumbar only @ 1.5” above iliac crest
(Patient has elbows/hip/knees flexed)

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5
Q

For AP L-Spine (intervertebral Disk) what is the breathing instructions?

A

suspend at end of expiration (relaxes back)

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6
Q

For AP L-Spine (intervertebral Disk) what is the collimation?

A

lumbar/sacrum-8x17

lumbar only-8x14

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7
Q

For AP L-Spine (intervertebral Disk) what is the criteria?

A

symmetric vertebrae
spinous process centered
SI joints equidistant
open intervertebral disk spaces

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8
Q

For Lateral L-Spine (intervertebral foramen) what is the cassette size?

A

14x17

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9
Q

For Lateral L-Spine (intervertebral foramen) what is the SID?

A

40”

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10
Q

For Lateral L-Spine (intervertebral foramen) what is the IR?

A

lumbar/sacrum @level iliac crest

lumbar only @ 1.5” above iliac crest

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11
Q

For Lateral L-Spine (intervertebral foramen) what is the CR?

A

Perpendicular enters MCP
lumbar/sacrum @level iliac crest
lumbar only @ 1.5” above iliac crest

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12
Q

For Lateral L-Spine (intervertebral foramen) what is the breathing instructions?

A

suspend at end of expiration

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13
Q

For Lateral L-Spine (intervertebral foramen) what is the collimation?

A

lumbar/sacrum-8x17

lumbar only-8x14

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14
Q

For Lateral L-Spine (intervertebral foramen) what is the criteria to be met?

A

superimposed posterior margins of vertebral body
superimposed crest
spinous process in profile
open intervertebral disk spaces and foramen

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15
Q

For Lateral L5-S1 “Spot” (Lumbosacral Junction) what is the cassette size?

A

10x12

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16
Q

For Lateral L5-S1 “Spot” (Lumbosacral Junction) what is the SID?

A

40”

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17
Q

For Lateral L5-S1 “Spot” (Lumbosacral Junction) what is the IR?

A

Center to central Ray

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18
Q

For Lateral L5-S1 “Spot” (Lumbosacral Junction) what is the CR?

A 
center in coronal plane 
2"posterior to ASIS and 1.5" below iliac crest
if not horizontal angle CR 
male: 5 degrees caudal
female: 8 degrees caudal
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19
Q

For Lateral L5-S1 “Spot” (Lumbosacral Junction) what is the breathing instructions?

A

suspend

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20
Q

For Lateral L5-S1 “Spot” (Lumbosacral Junction) what is the collimation?

A

6x8

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21
Q

For Lateral L5-S1 “Spot” (Lumbosacral Junction) what is the criteria to be met?

A

lumbosacral joint in center
open intervertebral disk space
crest are superimposing

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22
Q

For AP Oblique RPO/LPO (Zygapopyseal Joints) what is the cassette size?

A

14x17

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23
Q

For AP Oblique RPO/LPO (Zygapopyseal Joints) what is the SID?

A

40”

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24
Q

For AP Oblique RPO/LPO (Zygapopyseal Joints) what is the IR?

A

center to central ray

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25
For AP Oblique RPO/LPO (Zygapopyseal Joints) what is the CR?
Lumbar- 2" medial to ASIS and 1-1.5" above iliac crest L5-SI- 2" medial to ASIS and midway between ASIS and iliac crest Patient will be at 45 angle for joints closest to IR 60 angle for L5-S1 zygapopyseal joint
26
For AP Oblique RPO/LPO (Zygapopyseal Joints) what is the breathing instructions?
suspend at end of expiration
27
For AP Oblique RPO/LPO (Zygapopyseal Joints) what is the collimation?
9x14
28
For AP Oblique RPO/LPO (Zygapopyseal Joints) what is the criteria to be met?
``` zygapopyseal joint CLOSEST to IR open joint not well seen Pedicle anterior= not rotated enough pedicle posterior= rotated too much vertebral column parallel T12-L1 and L1-L2 intervertebral joint open ```
29
For PA Oblique RAO/LAO (Zygapopyseal Joint) what is the cassette size?
14x17
30
For PA Oblique RAO/LAO (Zygapopyseal Joint) what is the SID?
40"
31
For PA Oblique RAO/LAO (Zygapopyseal Joint) what is the IR?
center to central ray
32
For PA Oblique RAO/LAO (Zygapopyseal Joint) what is the CR?
Lumbar- enter elevated side 2" lateral to palpable spinous process and 1-1.5" above crest L5-S1- 2" lateral spinous process and midpoint between iliac crest and ASIS Patient in 45 degree angle to show zygapopyseal joint or 60 degree angle for L5-S1
33
For PA Oblique RAO/LAO (Zygapopyseal Joint) what is the breathing instructions?
suspend at end of expiration
34
For PA Oblique RAO/LAO (Zygapopyseal Joint) what is the collimation?
9x14
35
For PA Oblique RAO/LAO (Zygapopyseal Joint) what is the criteria to be met?
``` zygapopyseal joints FARTHEST from IR if joint not seen well anterior=not rotated enough posterior= rotated too much intervertebral joint spaces open ```
36
For AP/PA Axial "Ferguson" (SI/Lumbosacral junction) what is the cassette size?
14x17
37
For AP/PA Axial "Ferguson" (SI/Lumbosacral junction) what is the SID?
40"
38
For AP/PA Axial "Ferguson" (SI/Lumbosacral junction) what is the IR position?
center to central ray
39
For AP/PA Axial "Ferguson" (SI/Lumbosacral junction) what is the CR?
at 1.5" above pubic symphysis (greater trochanter) or 2-2.5 " below ASIS Angle cephalic male: 30 degree female 35 degree
40
For AP/PA Axial "Ferguson" (SI/Lumbosacral junction) what is the breathing instructions?
suspend
41
For AP/PA Axial "Ferguson" (SI/Lumbosacral junction) what is the collimation?
8x10
42
For AP/PA Axial "Ferguson" (SI/Lumbosacral junction) what is the criteria to be met?
lumbosacral junction seen open intervertebral disk spaces between L5-S1 Both SI joints
43
For AP Oblique RPO/LPO (SI joints) what is the cassette size?
10x12
44
For AP Oblique RPO/LPO (SI joints) what is the SID?
40"
45
For AP Oblique RPO/LPO (SI joints) what is the IR?
@ level of ASIS
46
For AP Oblique RPO/LPO (SI joints) what is the CR?
center 1" medial to elevated ASIS | Patient in 25-30 degree rotation
47
For AP Oblique RPO/LPO (SI joints) what is the breathing instructions?
suspend
48
For AP Oblique RPO/LPO (SI joints) what is the collimation?
6x10
49
For AP Oblique RPO/LPO (SI joints) what is the criteria to be met?
SI joint FARTHEST from the IR (elevated side demonstr) Open SI joint Joint centered
50
For PA Oblique RAO/LAO (SI Joints) what is the cassette size?
10x12
51
For PA Oblique RAO/LAO (SI Joints) what is the IR?
@ level of ASIS
52
For PA Oblique RAO/LAO (SI Joints) what is the CR?
centered 1" medial to ASIS | Patient in a 25-30 angle
53
For PA Oblique RAO/LAO (SI Joints) what is the breathing instructions?
suspend
54
For PA Oblique RAO/LAO (SI Joints) what is the collimation?
6x10
55
For PA Oblique RAO/LAO (SI Joints) what is the criteria met?
open SI joints CLOSEST to the IR | joint centered
56
For PA Oblique RAO/LAO (SI Joints) what is the SID?
40"
57
For AP/PA Axial (Sacrum/Coccyx) what is the Cassette size?
10x12
58
For AP/PA Axial (Sacrum/Coccyx) what is the SID?
40"
59
For AP/PA Axial (Sacrum/Coccyx) what is the IR?
center to CR
60
For AP/PA Axial (Sacrum/Coccyx) what is the CR?
Supine Sacrum: 15 cephalic, 2"above pubic symphysis Prone Sacrum: 15 caudal, center to sacral curve Supine Coccyx: 10 caudal, 2"above pubic symphysis Prone Coccyx: 10 cephalic, center to coccyx
61
For AP/PA Axial (Sacrum/Coccyx) what is the breathing instructions?
suspend
62
For AP/PA Axial (Sacrum/Coccyx) what is the collimation?
sacrum: 10x12 coccyx: 8x10
63
For AP/PA Axial (Sacrum/Coccyx) what is the criteria met?
sacrum: centered free of foreshortening pubic bone not overlapping coccyx: centered segments not superimposed no rotation
64
For Lateral (Sacrum/Coccyx) what is the cassette size?
10x12
65
For Lateral (Sacrum/Coccyx) what is the SID?
40"
66
For Lateral (Sacrum/Coccyx) what is the IR?
Center to CR
67
For Lateral (Sacrum/Coccyx) what is the CR?
sacrum: level of ASIS and 3.5" posterior coccyx: 3.5" posterior to ASIS and 2" below
68
For Lateral (Sacrum/Coccyx) what is the breathing instructions?
suspend
69
For Lateral (Sacrum/Coccyx) what is the collimation?
sacrum: 10x12 coccyx: 6x8
70
For Lateral (Sacrum/Coccyx) what is the criteria?
sacrum and coccyx shown | superimposed ischia and ilia

Radiology 122 (18 decks)

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