The role of cervical color Doppler ultrasound in the diagnosis of brain death.

Our results show that cervical color Doppler may become a reliable and safe technique in detecting CCA, which can shorten the time for declaring brain death. In particular, in patients lacking good bone windows at transcranial color Doppler, cervical color Doppler of the cervical internal carotids and vertebral arteries could be recommended to increase the sensitivity of transcranial color Doppler, or as an alternative bedside examination.