<prompt> Investigation of choice in VURUltrasoundMRIVoiding cystourethrogramCystoscopy  <response>: c. Voiding cystourethrogramRef: Nelsons 20e p 2562-2567, Ghai 8e p 485-486The most useful process for conclusive diagnosis of VUR is micturating cystourethrogram MCUMCU demonstrates the grade of reflux as well as urethral anatomy.Radionuclide imaging is sensitive at detecting reflux but does not demonstrate anatomic details 