Despite there being an increasing number of installations of ultra high field MR systems (>3T) in clinical environments, no functional patient investigations have yet examined possible benefits for functional diagnostics. Here we performed presurgical localization of the primary motor hand area on 3T and 7T Siemens scanners with identical investigational procedures and comparable system specifi...

Three-dimensional filtered backprojection uses filters generally specified in the Fourier domain. Implementing these filters by direct sampling in the Fourier domain produces an artifact in the reconstructed images consisting primarily of a DC shift. This artifact is caused by aliasing of the reconstruction filter. We have developed a filter construction technique using Fourier domain oversampl...

Obtaining accurate reconstructions from a small number of projections is important in many tomographic applications. Current advanced reconstruction methods are able to produce accurate reconstructions in some cases, but they are usually computationally expensive. Here, we present a reconstruction method based on artificial neural networks, which can be viewed as a combination of fast filtered ...

Computed tomography (CT) entails the reconstruction of a function f from line integrals of f . This mathematical problem is encountered in a growing number of diverse settings in medicine, science, and technology. This introductory article is divided into three parts. The first part is concerned with general theory and explores questions of uniqueness, stability and inversion, as well as detect...

Continuous wave (CW) tomosynthesis provides many theoretical advantages over traditional breast imaging techniques, like mammography. These theoretical advantages include improved spatial resolution, better information weighting, and the ability to resolve structures hidden by tissue overlap. However, unlike mammography, tomosynthesis is a three-dimensional imaging modality and it will require ...