Sacroiliac Joints - AP

Radiographic Positioning

Adult

Other related pages of interest Applied Radiography Radiographic Anatomy Radiographic Protocols

Name of projection	Sacroiliac Joints - AP
Area Covered	Sacroiliac joints, L5-S1 junction and entire sacrum
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 angled cephalad 30° to 45° CR directed to midline 5cm below the level of ASIS
Collimation	Laterally to include both sacroiliac joints Superior and inferior to include entire sacrum
Markers	Distal and Lateral Marker orientation AP
Shielding	Gonadal (check your department's policy guidelines)
Respiration	Suspended
Positioning	Patient supine on the table Cushion for patients head Legs extended with support under the knees Align midsagittal plane to CR and midline of table Ensure no rotation of the pelvis (ASIS to table distance equal both sides) CR angled cephalad 30° to 45° CR directed to midline 5cm below the level of ASIS
Critique PACEMAN	Positioning Area Covered Collimation Exposure
Special Notes