Patent Document ID: 20020106051
Application ID: 09742048
Patent Status: 0

Claim One:
1. A method for reconstructing the image of an object using at least 2 single plane X-ray projections, the method comprising the steps of; a) substantially uniformly filling the object with an X-ray contrast agent; b) irradiating said contrast agent-filled object with X-rays from at least two directions; c) detecting said X-rays transmitted through said contrast agent-filled object to define at least two live X-ray projection absorbance profiles; d) providing a first image to be corrected; e) updating the image provided in step d) by setting the absorbance value to 0 for all picture elements having an absorbance below a preselected threshold value and by setting all other picture elements to the absorbance value corresponding to the concentration of the X-ray contrast agent within the object; f) forward projecting the image obtained in step e) into said at least 2 planes of projection along said at least two directions to obtain X-ray absorbance profiles of said image to be corrected; g) calculating the difference between the absorbance profiles of the object and of the image to be corrected; h) correcting the image obtained in step e) using iterative reconstruction techniques; i) repeating steps e) to h) until the difference between the current absorbance profiles and the object absorbance profiles is less than a selected value; j) displaying the image.