L Sine, SI Joints, Sacrum, Coccyx

Question 1

AP L Spine:
CR-
IR Size, SID, Collimation-
Position-
Technique-
Instructions-

Answer 1

• illiac crest and MSP
• 14x17 LW, 40”, Leave collimation open
• Supine w/ knees flexed
• 75@30
• suspend on expiration

Question 2

RPO L Spine:
CR-
IR Size, SID, Collimation-
Position-
Technique-
Instructions-

Answer 2

• (L3) 1”-2” above crests, 2” medial to left (upside) ASIS
• 14x17 LW, 40”, collimate 8x14
• 45 degree RPO
• 75@45
• suspend on full expiration
• demonstrates RIGHT zygapophyseal joints

Question 3

LPO L Spine:
CR-
IR Size, SID, Collimation-
Position-
Technique-
Instructions-

Answer 3

• (L3) 1”-2” above crests, 2” medial to right (upside) ASIS
• 14x17 LW, 40”, collimate 8x14
• 45 degree LPO
• 75@45
• suspend on full expiration
• demonstrates LEFT zygapophyseal joints

Question 4

Lateral L Spine:
CR-
IR Size, SID, Collimation-
Position-
Technique-
Instructions-

Answer 4

• illiac crest and MCP
• 14x17 LW, 40”, Collimate width 8-10” (little light behind pt)
• Left lateral recumbent w/ knees flexed
• 75@45
• suspend on full expiration
• demonstrates intervertebral foramina
• *Place lead behind patients back
• **Place marker ANTERIOR to pt!

Question 5

L5 S1 Lumbosacral Spot:
CR-
IR Size, SID, Collimation-
Position-
Technique-
Instructions-

Answer 5

• 1.5” inferior to IC and 2” posterior to ASIS w/ 5-8 degree caudal angle
• 8x10 LW, 40”
• Left lateral recumbent
• 100@40
• suspend respiration

Question 6

RPO SI Joints:
CR-
IR Size, SID, Collimation-
Position-
Technique-
Instructions-

Answer 6

• Level of ASIS and 1” medial to left side ASIS
• 10x12 LW, 40”, 8x10 collimation
• 25-30 degree RPO
• 75@32
• Suspend respiration
• Mark LEFT side! (Side up)

Question 7

AP Axial Sacrum:
CR-
IR Size, SID, Collimation-
Position-
Technique-
Instructions-

Answer 7

• 2” below ASIS and MSP w/ 15 degree cephalic angle
• 10x12 LW, 40”, collimate 8x10
• supine w/ legs extended
• 75@25
• suspend respiration

Question 8

AP Axial Coccyx:
CR-
IR Size, SID, Collimation-
Position-
Technique-
Instructions-

Answer 8

• 2” below ASIS and MSP, w/ 10 degree caudal angle
• 10x12 LW, 40”, collimate 6x6
• supine, legs extended
• 80@15
• Suspend respiration

Question 9

Lateral Coccyx and Sacrum:
CR-
IR Size, SID, Collimation-
Position-
Technique-
Instructions-

Answer 9

• 1” distal to ASIS and 3”-4” posterior
• 10x12 LW, 40”
• Lateral recumbent w/ knees flexed
• 90@32
• suspend respiration