Determining three-dimensional movement of object for medical imaging, by using two-dimensional movement of markers in two or more radiographic images

摘要

The method involves placing a number of opaque markers on a body of the object, to form a fixed reference frame. Two or more radiographic images of the object are taken at difference fixed positions of the imaging device in the reference frame of the markers. A matrix of the three-dimensional movement of the object is then determined with reference to a device forming a radiation source, based on the two-dimensional movement of the markers in the radiographic images. The device forming the radiation source constitutes a fixed reference frame. Independent claims are included for an imaging device, a computer program product, an object used with a computer system, and a machine-readable program storage device.