The present invention relates to a C-arm X-ray imaging system. In order to provide C-arm systems with an extended three-dimensional field of view, a C-arm X-ray imaging system (10), provided to acquire extended three-dimensional images of an object, is provided, comprising a C-arm structure (12) with an X-ray source (14) and an X-ray detector (16) mounted across from the X-ray source, a motorized drive (22) for a rotational movement of the C-arm structure, and a control unit (26). The C-arm structure is provided to perform a rotational scan around an axis of rotation and around an ISO-centre acquiring a number of X- ray projections in order to generate image data for a reconstructed three-dimensional field of view. The control unit is configured to control the motorized drive, and to cause the rotational movement of the C-arm structure to perform a first rotational X-ray scan (50) around a first ISO-centre (56) with a first axis of rotation for a first field of view, and to perform at least a second rotational X-ray scan (60) around a second ISO-centre (62) with a second axis of rotation for a second field of view. The first and the second centre of rotation are displaced in relation to each other such that a connection line between the first and the second ISO-centre is arranged transverse to the first and the second axis of rotation.La présente invention concerne un système d'imagerie à rayons X à bras en C. De façon à doser des systèmes de bras en C d'un champ de vision tridimensionnel étendu, un système d'imagerie à rayons X à bras en C (10), conçu pour acquérir des images tridimensionnelles étendues d'un objet, est prévu, comprenant une structure de bras en C (12) ayant une source de rayons X (14) et un détecteur de rayons X (16) monté à travers la source de rayons X, une commande motorisée (22) pour un déplacement rotatif de la structure de bras en C, et une unité de commande (26). La structure de bras en C est conçue pour réaliser un balayage rotatif autour d
