A prototype rapid dual energy X-ray absorptiometry (DEXA) system can predict the CT composition of beef carcases

The development of a novel rapid dual energy X-ray absorptiometry (DEXA) system provides the opportunity to improve measurement beef carcase composition. A prototype DEXA was built in shipping container scan 51 carcases selected for wide range weight and fatness. One side each spray chilled other conventionally overnight before being quartered scanning then cut into 16 pieces CT determine Spray chilling did not impact prediction composition, with describing 89%, 95%, 87% variation lean %, fat % bone root mean square error 2.31 2.15 1.12 units. These results demonstrate that has excellent capacity predict composition carcases.