Patent ID: 9089308
Filing Date: 2015-07-28
Classification: A61B,G06T

Abstract:
1. A method for processing measurement data from perfusion computed tomography (CT), comprising: calculating perfusion parameters and at least one dynamic CT-angiography image from the measurement data, the measurement data being gathered by an Adaptive 4D CT scanner such that a same one of the measurement data gathered at a same time is used to calculate both the perfusion parameters and the dynamic CT-angiography image, the dynamic CT-angiography image associated with a short vessel section and the perfusion parameters used to calculate which arterial and venous time attention curves are generated; for each of the calculating perfusion parameters and the calculating the at least one dynamic CT-angiography image, averaging, in each case over a plurality of dynamic CT-angiography images from temporally successive time phases, to obtain one or more averaged CT-angiography image such that the one or more averaged CT angiography images are associated with a longer vessel section than the dynamic CT-angiography image, the temporally successive time phases for averaging being determined from the at least one time-attenuation curve; and distinguishing between voxels representing bones and voxels representing vessels by: