Lumbar Spine - Lateral
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Radiographic Positioning
Adult | Other related pages of interest |
Name of projection | Lumbar Spine - Lateral |
Area Covered | T12 - Sacrum, intervertebral foramina L1 to L4, vertebral bodies, intervertebral joints, spinous processes, and L5 to S1 junction, entire sacrum may be visualised |
Pathology shown | Fractures, spondylolisthesis, bone lesions, osteoporosis, foreign bodies. |
Radiographic Anatomy | Lumbar Spine Radiographic Anatomy |
IR Size & Orientation | 35 x 43 cm larger patient 30 x 35 cm smaller patient Portrait |
Film / Screen Combination | Regular (CR and DR as recommended by manufacturer) |
Bucky / Grid | Moving or Stationary Grid |
Filter | No |
Exposure | 80 kVp x 40 mAs or breathing technqiue 80 kVp x 40 mA with 2 seconds exposure time see - lateral lumbar breathing technique |
FFD / SID | 100 cm |
Central Ray | CR perpendicular to long axis of spine Larger patient - centre to iliac crest (L4-5) Smaller patient - centre to L3 (lower costal margin) (4cm above iliac crest) |
Collimation | Inferior to Superior - collimate to film size Lateral borders closely collimate (light field will appear small due to the patient being close to the X-ray tube) |
Markers | Superior and Lateral Marker orientation AP |
Shielding | Gonadal (check your department's policy guidelines) |
Respiration | Suspend respiration on expiration or use breathing technique |
Positioning |
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Critique | Positioning |
Special Notes |