1. A method of real-time 3-D visualization and navigation for interventional procedures, comprising the steps of: determining a position at which data will be acquired; acquiring image data at the position; extracting features from the acquired image data, the features corresponding to boundaries between regions; building a model described by the extracted features; displaying a 3-D scene in real-time showing one or more of the regions using the model or data extracted from the model; allowing a user to navigate through the displayed 3-D scene by changing the position and an orientation of a virtual camera of the 3-D scene display; and updating at least one of the regions by calculating at least one acquisition parameter of a set of acquisition parameters and controlling a target acquisition area of a scanner acquiring the image data by the at least one acquisition parameter based on the changed position and orientation of the virtual camera of the scanner acquiring the data.