Reconstruction of time-varying data
AssigneeSiemens Healthcare GmbH
InventorsBenno Heigl, Markus Kowarschik, Christopher Rohkohl, Kevin Royalty, Sebastian Schafer, Jurgen Endres
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Abstract
Systems and methods are provided for data reconstruction. In accordance with one aspect, data interpolation is performed on a time-varying three-dimensional (3D) image dataset of one or more vessel-like structures to generate at least one interpolated voxel value. The interpolated voxel value is used to correct at least one value of a vessel voxel representing the one or more vessel-like structures in the time-varying 3D dataset.
Claims27
A non-transitory computer readable medium embodying a program of instructions executable by machine to perform steps for facilitating iterative data reconstruction, the steps comprising:
- (i) receiving a time-varying two-dimensional (2D) image dataset of one or more structures of a biological object of a patient;
- (ii) forward projecting temporal volumes in a current estimated time-varying three-dimensional (3D) dataset to obtain 2D attenuation coefficients, and determining an error between the 2D attenuation coefficients corresponding to the current estimated time-varying 3D dataset and corresponding projection data from the received time-varying 2D image dataset;
- and
- (iii) back projecting the error across the temporal volumes in the current estimated time-varying 3D dataset to adjust the current estimated time-varying 3D dataset.
A system for data reconstruction, comprising:
- a non-transitory memory device for storing computer readable program code;
- and
- a processor in communication with the memory device, the processor being operative with the computer readable program code to:
- generate a time-varying projection image dataset of one or more structures of a biological object of a patient;
- generate a time-varying three-dimensional (3D) image dataset of the one or more structures from the time-varying projection image dataset;
- perform data interpolation on the time-varying 3D image dataset to generate at least one interpolated voxel value;
- and
- correct, with the interpolated voxel value, at least one value of a voxel representing the one or more structures in the time-varying 3D dataset.
A method of iterative data reconstruction, comprising:
- (i) receiving, by a processor, a time-varying two-dimensional (2D) image dataset of one or more structures of a biological object of a patient;
- (ii) forward projecting, by the processor, temporal volumes in a current estimated time-varying three-dimensional (3D) dataset to obtain 2D attenuation coefficients, and determining an error between the 2D attenuation coefficients corresponding to the current estimated time-varying 3D dataset and corresponding projection data from the received time-varying 2D image dataset;
- and
- (iii) back projecting, by the processor, the error across the temporal volumes in the current estimated time-varying 3D dataset to adjust the current estimated time-varying 3D dataset.
Dependencies are inferred from the claim text.