A controller (120/220/320) for synchronizing image signals and sensor signals in a medical intervention, comprising: a circuit (121-126/221-226/321-351) that implements a process comprising: receiving a signal stream between an ultrasound imaging probe (110/210/310) that emits a plurality of beams during the medical intervention and a console (190/290/390) that receives the image signals from the ultrasound imaging probe (110/210/310) generated based on the plurality of beams, the signal stream including synchronization information indicating timing of emission of each beam of the plurality of beams; extracting, by the circuit (121-126/221-226/321-351) from the signal stream, the synchronization information indicating the timing of emission of each beam of the plurality of beams; receiving, by the circuit (121-126/221-226/321-351) from a first passive ultrasound sensor (S 1) that receives energy from each beam emitted by the ultrasound imaging probe (110/210/310), a first signal that includes first sensor information indicative of a location of the first passive ultrasound sensor and generated based on receipt by the first passive ultrasound sensor of the energy received from each beam emitted by the ultrasound imaging probe (110/210/310); adding to the first signal with the first sensor information, and based on the synchronization information extracted from the signal stream, a second signal with a predefined signature characteristic indicating the timing of emission of each beam of the plurality of beams, to produce a first combined signal; and sending, from the circuit (121-126/221-226/321-351) to the console (190/290/390), the first combined signal produced by adding the first signal with the first sensor information and the second signal with the predefined signature characteristic indicating the timing of emission of each beam of the plurality of beams. receiving a signal stream between an ultrasound imaging probe (110/210/310) that emits a plurality of beams during the medical intervention and a console (190/290/390) that receives the image signals from the ultrasound imaging probe (110/210/310) generated based on the plurality of beams, the signal stream including synchronization information indicating timing of emission of each beam of the plurality of beams; extracting, by the circuit (121-126/221-226/321-351) from the signal stream, the synchronization information indicating the timing of emission of each beam of the plurality of beams; receiving, by the circuit (121-126/221-226/321-351) from a first passive ultrasound sensor (S 1) that receives energy from each beam emitted by the ultrasound imaging probe (110/210/310), a first signal that includes first sensor information indicative of a location of the first passive ultrasound sensor and generated based on receipt by the first passive ultrasound sensor of the energy received from each beam emitted by the ultrasound imaging probe (110/210/310); adding to the first signal with the first sensor information, and based on the synchronization information extracted from the signal stream, a second signal with a predefined signature characteristic indicating the timing of emission of each beam of the plurality of beams, to produce a first combined signal; and sending, from the circuit (121-126/221-226/321-351) to the console (190/290/390), the first combined signal produced by adding the first signal with the first sensor information and the second signal with the predefined signature characteristic indicating the timing of emission of each beam of the plurality of beams.