Objectives. To assess the usefulness of color Doppler ultrasound in ev
aluating the newborn with suspected antenatal testis torsion. Methods.
Nine newborns with 10 antenatally torsed testes were examined using c
olor Doppler and gray-scale ultrasound. Results. Each examination reve
aled lack of intratesticular blood flow on the affected side and norma
l flow within the contralateral testis. In addition, gray-scale sonogr
aphic architecture of the affected testes appeared to reflect the dura
tion of in utero torsion. Conclusions. Color Doppler sonography accura
tely assesses intratesticular blood flow in newborns with antenatal te
stis torsion and offers interesting details.