Sacroiliac Joints - Oblique - LPO / RPO

Radiographic Positioning

Adult

Other related pages of interest Applied Radiography Radiographic Anatomy Radiographic Protocols

Name of projection	Sacroiliac Joints - Oblique (LPO / RPO)
Area Covered	Sacroiliac joint of interest
Pathology shown	Fracture, dislocation or subluxation of sacroiliac joints
Radiographic Anatomy	Sacroiliac joint radiographic anatomy
IR Size & Orientation	24 x 30cm Portrait
Film / Screen Combination	Regular (CR and DR as recommended by manufacturer)
Bucky / Grid	Moving or Stationary Grid
Filter	No
Exposure	75 kVp 20 mAs
FFD / SID	100cm
Central Ray	CR is perpendicular to IR CR directed 2.5cm medial to upside ASIS
Collimation	Four sides of collimation Collimate closely to area of interest
Markers	Distal and Lateral Marker orientation AP Mark the joint being demonstrated - right SI joint is shown with LPO and left SI joint with RPO
Shielding	Gonadal (check your department's policy guidelines)
Respiration	Suspended
Positioning	Patient in semi supine position on the table Cushion for patients head Rotate patient 25° to 30° posterior oblique (side of interest being elevated) Right SI joint is shown with LPO and left SI joint with RPO (mark the side being shown) Place support under elevated hip and flex knee Align joint of interest to CR and midline of table CR is perpendicular to IR CR directed 2.5cm medial to upside ASIS
Critique PACEMAN	Positioning Area Covered Collimation Exposure
Special Notes