Predictive performance of renal resistive index, semiquantitative power Doppler ultrasound score and renal venous Doppler waveform pattern for acute kidney injury in critically ill... oleh Hai Jun Zhi, Jie Cui, Meng Wei Yuan, Ya Ning Zhao, Xing Wen Zhao, Ting Ting Zhu, Chun Mei Jia, Yong Li