Ozan Öktem

Analytic brain phantom that is realistic

9

Michel Unser's group at EPFL has developed a [brain phantom that is realistic yet analytic](http://bigwww.epfl.ch/algorithms/mriphantom/), see this [link](https://ieeexplore.ieee.org/document/6062681) for the paper. The work is mainly motivated by MRI, but the...

Non-uniform FFT

10

In some imaging modalities, like MRI and phase contrast tomography, the forward problem involves taking the Fourier transform of a function in 2D/3D that is not sampled on a grid....

FBP scaling issue

1

When running ODL FBP example, like the [example for 2D parallell beam acquisition](https://github.com/odlgroup/odl/blob/master/examples/tomo/filtered_backprojection_parallel_2d.py), the resulting FBP reconstruction is off by a (large) constant factor. In the example, phantom values range...