Digital Subtraction Angiography (DSA) images suffer from inhomogeneous contrast agent distributions within the vessels caused by unequally distributed contrast agent.
Is it right/ wrong to apply anti-concentration diffusion model for 2D DSA images? and why?
I don't know what anti-concentration means, but diffusion of contrast agents is a 3D phenomenon. Angio X-ray images are 2D conical projections of a 3D scene. A pixelvalue in such an X-ray image is the result of the electron-density of all tissue in the path of a beamlet plus some scatter.
So, I would say: doing some diffusion-based modelling in 3D is valid, but in 2D projections it is not valid.
@ Mr. Lambert
Thank you for answering, anti-concentration term is used by some researchers* to refer to intensity inhomogeneity.
* DSA Image Blood Vessel Skeleton Extraction Based on Anti-concentration Diffusion and Level Set Method
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