Clinical indication:
LBA, fracture stability
Region:
Sacrum, L5/S1 junction
Patient’s Position:
Patient is supine on the xray table
Place a pillow for patient’s head
Extend the legs by supporting patient’s knee
Align the mid sagittal plane to midline of table
Cassette:
Size: 10’’x12’’ Orientation: Landscape
FFD/SID:
100cm
Central ray:
Central ray is towards the midway between symphysis pubis and ASIS
Central ray is angled 15° cephaled
Grid:
Yes
Respiration:
Not related
Exposure factors:
70-80kVp 30-40mAs
Collimation:
All sides of collimation closely to include sacrum (region of interest)