A system for determining a position of an interventional device (11) respective an imaging field (B1..k) corresponding to a type (T1..n) of a beamforming ultrasound imaging probe (13) currently connected to an ultrasound imaging system (14). The position is determined based on ultrasound signals transmitted between the beamforming ultrasound imaging probe (13) and an ultrasound transducer (15) attached to the interventional device (11). An image reconstruction unit (IRU) provides a reconstructed ultrasound image (RUI) corresponding to the imaging field (B1..k). A position determination unit (PDU) receives input indicative of the type (T1..n) of the beamforming ultrasound imaging probe (13) currently connected to the ultrasound imaging system (14). The position determination unit (PDU) also computes a position (LAPTOFSmax, θIPA) of the ultrasound transducer (15) respective the imaging field (B1..k). Computing the position (LAPTOFSmax, θIPA) comprises selecting from a group of beam sequences corresponding to a plurality of imaging probe types (T1..n) a beam sequence corresponding to the type (T1..n) of the beamforming ultrasound imaging probe (13) currently connected to the ultrasound imaging system (14) and assigning detected ultrasound signals to the selected beam sequence.L'invention concerne également un système permettant de déterminer une position d'un dispositif d'intervention (11) correspondant à un champ d'imagerie (B1..k) correspondant à un type (T1..n) d'une sonde d'imagerie ultrasonore de formation de faisceau (13) actuellement connectée à un système d'imagerie ultrasonore (14). La position est déterminée sur la base de signaux ultrasonores transmis entre la sonde d'imagerie ultrasonore de formation de faisceau (13) et un transducteur ultrasonore (15) fixé au dispositif d'intervention (11). Une unité de reconstruction d'image (IRU) fournit une image ultrasonore reconstruite (RUI) correspondant au champ d'imagerie (B1..k). Une unité de détermination de posi
