Science to practice: What parameters are most accurate in predicting appropriate technique factors for CT scanning?

Menke (6) has shown that body circumference and mean body diameter are the best parameters to consider for adjusting CT technique factors. While newer CT scanners can adjust technique factors automatically on the basis of attenuation, technologists using CT scanners without such automatic modes should use patient circumference, mean body diameter, or Etopo (6) with technique charts (5) based on the measured parameter to accommodate the CT technique (principally tube current) to each patient's dimensions.