A device for intraoperative, image-controlled navigation during surgical procedures on an object to be operated on on the spinal column and/or in the thorax, pelvis or head region adjacent to the spinal column, comprising: multiple detection devices (11 - 17) that are not x-ray based, which are each configured to be arranged such that they are distributed about the object to be operated on, in the region of the spinal column and/or in the thorax, pelvis or head region adjacent thereto, and to intraoperatively capture image- and location data in real time, respectively comprising information relating to at least the outer contour of at least one subregion of the object to be operated on, and relating to the distance and the spatial orientation of the subregion relative to the respective detection device (11 - 17), a position determining device, which is configured to determine in real time data relating to the respective position of the detection devices (11 - 17) relative to a stationary reference system, a data processing device in operative connection with the detection devices (11 - 17) and with the position determining device, which data processing device is configured to generate, on the basis of the respective image- and location data of the detection devices (11 - 17) and of the respective position data of the position determining device, a virtual real time image of the object to be operated on, referenced to the stationary reference system, an image display device in operative connection with the data processing device, for displaying the virtual real time image, wherein at least two of the multiple detection devices that are not x-ray based are respectively an ultrasound-based detection device or a detection device based on terahertz radiation and respectively comprise at least one detection means (13.1-17.1) which is configured to be arranged inside the body, in order to capture image data which comprise information relating to at least the outer contour of at least one subregion of the object to be operated on, facing the inside of the body, wherein the multiple detection devices that are not x-ray based can be arranged distributed about the object which is to be operated on, such that by means of the multiple detection devices that are not x-ray based intraoperatively in real time image- and location data for the outer contours of various subregions of the object to be operated on are able to be captured, wherein the data processing device is configured to generate the real time image of the object to be operated on as a three-dimensional real time image of the outer contour of the object to be operated on, which is composed of the image data for the outer contours of the various subregions of the object to be operated on. multiple detection devices (11 - 17) that are not x-ray based, which are each configured to be arranged such that they are distributed about the object to be operated on, in the region of the spinal column and/or in the thorax, pelvis or head region adjacent thereto, and to intraoperatively capture image- and location data in real time, respectively comprising information relating to at least the outer contour of at least one subregion of the object to be operated on, and relating to the distance and the spatial orientation of the subregion relative to the respective detection device (11 - 17), a position determining device, which is configured to determine in real time data relating to the respective position of the detection devices (11 - 17) relative to a stationary reference system, a data processing device in operative connection with the detection devices (11 - 17) and with the position determining device, which data processing device is configured to generate, on the basis of the respective image- and location data of the detection devices (11 - 17) and of the respective position data of the position determining device, a virtual real time image of the object to be operated on, referenced to the stationary reference system, an image display device in operative connection with the data processing device, for displaying the virtual real time image, wherein at least two of the multiple detection devices that are not x-ray based are respectively an ultrasound-based detection device or a detection device based on terahertz radiation and respectively comprise at least one detection means (13.1-17.1) which is configured to be arranged inside the body, in order to capture image data which comprise information relating to at least the outer contour of at least one subregion of the object to be operated on, facing the inside of the body, wherein the multiple detection devices that are not x-ray based can be arranged distributed about the object which is to be operated on, such that by means of the multiple detection devices that are not x-ray based intraoperatively in real time image- and location data for the outer contours of various subregions of the object to be operated on are able to be captured, wherein the data processing device is configured to generate the real time image of the object to be operated on as a three-dimensional real time image of the outer contour of the object to be operated on, which is composed of the image data for the outer contours of the various subregions of the object to be operated on.