Importance

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Abstract

A method for point reconstruction and metric measurement on radiographic images comprises the following steps: positioning a fluoroscope for producing a fluoroscopic image, in a position where an operator, such as a physician, can observe points inside a patient's body on which points at least one of reconstruction and metric measurement are to be carried out; positioning a positioning device on the patient's body at an arbitrarily selected point F visible in a radiographic image, designating target points T.sup.i, being points to be reconstructed, by the operator on the radiographic image; finding planes .pi..sup.i passing through the X-ray source and a line FT.sup.i as describe in the step I and II in the invention disclosure; rotating the fluoroscope to a new position and taking a new radiographic image from this new viewpoint, designating target points T.sup.i, being points to be reconstructed, by the operator the physician on the new radiographic image; computing first the orientation of vectors Ft.sup.i ; computing the length of vectors .parallel.FT.sup.i .parallel.; visualizing points {T.sup.i, i=1 . . . n} in a coordinate system associated to the point F; and computing distances .parallel.T.sup.i T.sup.j .parallel., i,j=1 . . . n.

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First Claim