<span lang="EN-US">Electrical impedance tomography (EIT), as a non-ionizing method, has been widely used in various fields of application, such engineering and medical fields. This study applies an iterative process to reconstruct EIT images using the simultaneous algebraic reconstruction technique (SART) algorithm combined with K-means clustering. The started defining finite element meth...

BACKGROUND Digital breast tomosynthesis (DBT) is an emerging imaging modality which produces three-dimensional radiographic images of breast. DBT reconstructs tomographic images from a limited view angle, thus data acquired from DBT is not sufficient enough to reconstruct an exact image. It was proven that a sparse image from a highly undersampled data can be reconstructed via compressed sensin...

A new algorithm for 3D-reconstruction of objects from x-ray projections, called Planar Computer Tomography (PCT), is applied to inspection of solder joints. In contrast to axial computer tomography reconstruction is based on linear object movements instead of axial rotation. By this the handling of the Printed Circuit Board is simplified and integration into the conventional x-ray inspection pr...

Compared to analytical reconstruction by Feldkamp-Davis-Kress (FDK), simultaneous algebraic reconstruction technique (SART) offers a higher degree of flexibility in input measurements and often produces superior quality images. Due to the iterative nature of the algorithm, however, SART requires intense computations which have prevented its use in clinical practice. In this paper, we developed ...

Anterior cruciate ligament (ACL) reconstruction surgery has significantly evolved in recent years. This has led to development of new technologies that facilitate the diagnosis of ACL injury and the application of state of the art methods for treatment. In particular, individualized anatomical ACL reconstruction aims to restore native ACL function. Treatment is tailored to each patient based on...

Ultrasound transmission tomography is presented as an imaging modality for breast cancer diagnosis. A 3D reconstruction technique is proposed for estimation of soundspeed images for the Karlsruhe 3D ultrasound transmission tomograph. The problems of sparse spatial distribution of ultrasound transducers and of low signal-to-noise ratio are approached using synthetic aperture focusing. The image ...

Proton computed tomography (pCT) is an imaging modality that is based on tracking individual protons as they traverse the object to be imaged. Proton-by-proton tracking is necessary due to the effects of multiple Coulomb scattering (MCS), a process that deviates the proton path from a striaght line. If optimal spatial resolution is to be achieved, the path of each proton must be predicted with ...

Algebraic iterative methods are routinely used for solving the ill-posed sparse linear systems arising in tomographic image reconstruction. Here we consider the Algebraic Reconstruction Techniques (ART) and the Simultaneous Iterative Reconstruction Techniques (SIRT), both of which rely on semi-convergence. Block versions of these methods, based on a partitioning of the linear system, are able t...

Tomographic inversion of the ionosphere is a rank-deficient problem. To overcome above problem, an algebraic reconstruction technique (ART) based on adaptive horizontal constraint and empirical orthogonal function (ARTHCEOF) proposed. The new algorithm avoids difficulty vertically constrained matrix construction resolves description ionospheric vertical structure by using EOF. confirm feasibili...