A Doppler ultrasound system for executing Doppler ultrasound tests. The Doppler ultrasound system employs an ultrasound probe (40), a vessel FORS sensor (20) and a Doppler ultrasound controller (60). In operation, an ultrasound probe (40) transmits an ultrasound beam through a bodily vessel (e.g., a blood vessel) for generating imaging data illustrative of an ultrasound image of fluid flow through the bodily vessel (e.g., blood flow through a blood vessel), and the vessel FORS sensor (20) is introduced into the bodily vessel for generating vessel sensing data informative of a reconstructed shape of the vessel FORS sensor (20) within the bodily vessel relative to the ultrasound probe (40). Responsive to the data, the Doppler ultrasound controller (60) estimates a parametric relationship between the fluid flow through the bodily vessel and a transmission by the ultrasound probe (40) of the ultrasound beam through the bodily vessel.
