Image Reconstruction for Medical Applications
The goal of medical image reconstruction is to recover the spatial distribution of a parameter such as the X-ray attenuation coefficient, or radioisotope concentration, inside the body from external measurements, i.e. non-invasive. When the behaviour of the parameter is determined as a function of depth within the body, the resulting image is tomographic, and the procedure is termed tomographic image reconstruction. The essential feature of this procedure is that the image is reconstructed from projections of the underlying distribution. Image reconstruction from projections is a problem that has arisen repeatedly over the past thirty years in a wide variety of different disciplines as diverse as electron microscopy and radioastronomy.
KeywordsSpatial Domain Reconstruction Algorithm Projection Data Inverse Fourier Transform Projection Direction
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