Approach favored by some attendings (DL). Read labels on image (R/L).

Patient is prone and proceduralist is on the left side of the patient (right side of the gantry)

Right posterior iliac bone 

Approach favored by some attendings (MO). Read labels on image (R/L).

Patient is prone and proceduralist is on the left side of the patient (right side of the gantry)

Left posterior  iliac bone.