<prompt> Investigation of choice for torsion testis isColour DopplerMRICTRoutine USG  <response>: Ans: a Colour Doppler Ref:- Sutton - 7th edition Page No:-Doppler ultrasound is the imaging of choice for torsion testis. It helps in the diagnosis of torsion by virtue of reduced vascularity absence or poor colour flow, reduced peak systolic velocities compared with the unaffected side. 