4[3]Chelfouh N,Grenier N,Higueret D,et al.Characterization of urinary calculi:in vitro study of "twinkling artifact"revealed by color-flow sonography.Am J Roentgenology. 1998, 171:1055-1060
5[5]Aytac S K,Ozcan H,Effect of color Doppler system on the twin-kling sign associated with urinary tract calculi.JCU,1999,27:433-439
6[6]Khan H G,Galiioud P,Martin J B,et al Twinkling artifact on intra-cerebral color Doppler sonography.AJNR,1999,20:246-247
7[7]Trillaud H,Pariente J L,Rabie A,et al.Detection of encrusted in-dwell-ing ureteral stents using a twinkling artifact revealed on color Doppler sonography.Am J Roentgenology.2001,176:1446-1448
8[8]Ustymowicz A,Krejza J,Mariak Z,Twinkling artifact in color Do-ppler imaging of the orbit.J Utrasound Med.2002,21:559-563
