Lumbar - L5/S1 Lateral

Radiographic Positioning

Adult

Other related pages of interest Applied Radiography Radiographic Anatomy Radiographic Protocols

Name of projection	L5/S1 - Lateral
Area Covered	Open L4 to L5 and L5 to S1 joint space,
Pathology shown	Spondylolisthesis involving L4 to L5 or L5 to S1, fractures and degeneration
Radiographic Anatomy	Lumbar Spine Radiographic Anatomy
IR Size & Orientation	18 x 24 cm
Film / Screen Combination	Regular (CR and DR as recommended by manufacturer)
Bucky / Grid	Moving or Stationary Grid
Filter	No
Exposure	85 kVp 50 mAs
FFD / SID	100cm
Central Ray	CR perpendicular to IR CR 4cm inferior to iliac crest and 5cm posterior to ASIS
Collimation	Four sides of collimation collimate closely to area of interest
Markers	Anterior Marker orientation AP
Shielding	Gonadal (check your department's policy guidelines)
Respiration	Suspended
Positioning	Patient in the lateral recumbent position on the table Cushion for patients head Knees flexed Ensure pelvis is in true lateral position CR perpendicular to IR CR 4cm inferior to iliac crest and 5cm posterior to ASIS
Critique PACEMAN	Positioning Area Covered Collimation Exposure
Special Notes