Patent ID: 8825139
Filing Date: 2014-09-02
Classification: A61B,G16H

Abstract:
1. A method for automatic detection of a contrast agent inflow in a blood vessel of a patient with a computed tomography (CT) system, the method comprising: providing, using a computer device, statistical average values of principal components of a previous evaluation of a multiplicity of statistically comparable CT representations by, carrying out, using the computer device, a multiplicity of chronologically progressive scans in at least one section plane; progressively calculating, using the computer device, CT representations for respective datum; determining, for each CT representation and using the computer device, a multi-dimensional position of distinctive points of recognizable anatomical structures, except with regard to the at least one blood vessel or the ROI for the at least one blood vessel; determining, using the computer device, principal components for each CT representation; determining, for each CT representation and using the computer device, a deformation vector from the statistical average values of the principal components to the determined principal components; determining, for each CT representation and using the computer device, a transformation of the multi-dimensional position of the at least one blood vessel or the ROI for the at least one blood vessel; determining, using the computer device, a change in image values as a function of time in a region of the at least one blood vessel or the ROI of the at least one blood vessel over a multiplicity of the CT representations at respectively transformed positions of the at least one blood vessel or transformed ROI for the at least one blood vessel; and when a first threshold of the image values is exceeded, using the computer device to perform at least one of