Abstract: An arrangement for measuring a flow velocity in a blood vessel comprising; a catheter configured to be inserted into a blood vessel; a plurality of flow velocity sensors coupled to the catheter; a sensor network coupled to the plurality of flow velocity sensors; and a processor coupled to the sensor network; wherein each of the plurality of flow velocity sensors is configured to sense a velocity of a blood flow, wherein an output of the sensor network is configured to be input into a mathematical model stored in the processor, and wherein the mathematical model is configured to calculate the flow velocity in the blood vessel where the catheter is located.

Abstract: An arrangement for providing information of an alignment of a catheter is provided. The arrangement comprises a catheter (140). The arrangement comprises a sensor arrangement. The sensor arrangement comprises a first sensor (101) and a second sensor (102). The first and the second sensors are adapted to measure respective velocities of the fluid flow. The first and second sensors are arranged at a circumference of the catheter. The first and second sensors provide information such that an alignment of the catheter with respect to a direction of the fluid flow is determinable based on the respective velocities of the fluid flow measured by the first and second sensors.

Abstract: The present disclosure generally relates to the field of sensor technology. More specifically, the present disclosure relates to a sensor arrangement and a catheter comprising such a sensor arrangement. An embodiment of the sensor arrangement comprises: at least two displaced first sensors arranged in parallel in a first plane and adapted to measure a quantity of a fluid flow; and a control unit adapted to determine, from the measured quantity of the fluid flow, information indicating at least a range of directions of the fluid flow in two dimensions.