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Tomographic Reconstruction Apparatus and Removing Diffraction Effects in a Tomographic Image
Patent Number: 12,367,563
Problem
Typical current tomographic reconstruction algorithms either ignores diffraction entirely or treats only a single wavelength and does not have a principled theory of partial coherence. These can lead to unphysical reconstructions of high and low densities near material boundaries.
Invention
The invention is a method for creating improved tomographic reconstructions in the presence of diffraction. The new feature is the recognition that it is possible to make an iterative method which has the same scaling in computation time as projective tomography.
Potential Commercial Applications
- High-Resolution Medical and Dental Imaging
- High-Resolution Biological Imaging
- Industrial Metrology & Inspection
- Materials Science
- Pharmaceutical Industry
- Geological & Oil/Gas Applications
Competitive Advantage
The method is applicable to lower Fresnel number than current methods, but does not require the far field limit used in ptychography. The method gives superior resolution of abrupt edges between materials of different density. Such differences are extremely common in both engineered and natural systems.