Final answer:
Dual-energy X-ray absorptiometry (DEXA) is the x-ray technique used to determine the density of bone.
Step-by-step explanation:
The x-ray technique for determining the density of bone is called Dual-energy X-ray absorptiometry (DEXA).
DEXA works by directing two low-dose X-ray beams through the body and measuring the amount of energy absorbed from the beams. The density of bone can be determined based on the amount of energy absorbed.
This technique can also be used to estimate fat content in the body, as it measures the energy absorption of bone, lean tissue mass, and fat mass.