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spine · Lateral
Lumbar Spine Lateral
Patient lateral recumbent, knees flexed.
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AI Patient · KV Sir
How to perform this view
- 01
Left lateral, knees flexed, arms forward.
- 02
Pad under waist so spine is parallel.
- 03
CR at iliac crest (L4) through mid-coronal plane.
- 04
Angle 5-8 deg caudad if not parallel.
- 05
Lead rubber behind patient to reduce scatter.
Anatomical & patient position
Patient: Patient lateral recumbent, knees flexed.
Part: Spine parallel to table; MCP perpendicular.
Central ray & centring point
Perpendicular to L4 at iliac crest.
Exposure factors
kVp
85-95 kVp
mAs
40-60 mAs
SID
100 cm
IR size
35 x 43 cm portrait
Grid
Yes
Respiration
Suspended expiration
Clinical indications
- Spondylolisthesis
- Disc space narrowing
- Compression fracture
Contraindications & precautions
- Pregnancy (relative) - confirm LMP / 10-day rule, justify exposure and shield where possible
Structures shown & evaluation criteria
- L1-S1 vertebral bodies
- Intervertebral foramina
- Spinous processes