An assessment device and assessment method are provided. The assessment device includes a tube, a flexible tip secured to the tube, and a rotatable sensor section proximal to the flexible tip, the rotatable sensor section including a Doppler transducer and a phased array arranged and disposed to provide a Doppler assessment data point corresponding to an assessment angle of the Doppler transducer. The rotatable sensor section is rotatable between a first assessment angle and a second assessment angle. The assessment method includes providing an assessment device including the rotatable sensor section, inserting the rotatable sensor section, positioning the rotatable sensor section with respect to a target assessment area, rotating the rotatable sensor section through a range of assessment angles between a first assessment angle and a second assessment angle, and obtaining the Doppler assessment data point with the rotatable sensor section.
