Abstract: A computer implemented method for automatically updating a geometric model of an object of interest includes determining, automatically, a region of the geometric model for updating according to a update parameter, acquiring data at the region, extracting features from the acquired data, updating the geometric model described by the extracted features, wherein updating the model includes calculating at least one acquisition parameter of a set of acquisition parameters, and displaying a scene showing the object of interest using the model.

Abstract: A method for measuring pulse wave velocity through an artery. The method includes: obtaining an image of the artery; generating from the image a model of the artery; selecting two reference points along the artery, such two reference points being separated a predetermined distance, D; observing a change in the model at a first one of the two reference points and a corresponding change in the model at a second one of the two reference points along with a time difference T between the observed changes; and estimating the pulse wave velocity, PWV, in accordance with PWV=D/T.