In the world of medical computing, 3D reconstruction of slice data is a common topic. A slice is a single cross-section image obtained by CT or MRI devices, and can be processed to obtain polygonal data describing the material to be analyzed. For example, if images are taken of a heart, contours around the cross sections might be found and saved as point data for further processing. An example ...

Existing convex relaxation-based approaches to reconstruction in compressed sensing assume that noise in the measurements is independent of the signal of interest. We consider the case of noise being linearly correlated with the signal and introduce a simple technique for improving compressed sensing reconstruction from such measurements. The technique is based on a linear model of the correlat...

Suspensory femoral graft fixation has been a popular and reliable method in anterior cruciate ligament (ACL) reconstruction. Some authors have introduced suspensory femoral fixation in posterior cruciate ligament (PCL) reconstruction using inside-out (IO) technique. The use of IO technique for femoral tunnel preparation could significantly sharpen the critical corner, which might result in graf...

The use of the time gating technique for lifetime reconstruction in the Fourier domain is a novel technique. Time gating provides sufficient data points in the time domain for reliable application of the Fourier transform, which is essential for the time deconvolution of the system of the integral equations employed in the reconstruction. The Fourier domain telegraph equation is employed to mod...

We formulate a block-iterative algorithmic scheme for the solution of systems of linear inequalities and/or equations and analyze its convergence. This study provides as special cases proofs of convergence of (i) the recently proposed component averaging (CAV) method of Censor, Gordon, and Gordon [Parallel Comput., 27 (2001), pp. 777–808], (ii) the recently proposed block-iterative CAV (BICAV) ...

We address the problem of exact complex-wave reconstruction in digital holography. We show that, by confining the object-wave modulation to one quadrant of the frequency domain, and by maintaining a reference-wave intensity higher than that of the object, one can achieve exact complex-wave reconstruction in the absence of noise. A feature of the proposed technique is that the zero-order artifac...

  Background: Articular cartilage injuries are a common clinical problem at the time of ACL reconstruction with an incidence rate of 16-46%. Good results of ACL reconstruction combined with the treatment of chondral lesions have been published in some studies. Method: After statistical analysis 30 patients were selected and divided in 2 groups. TheFfirst group consisted of 15 patients wite isol...

  Background: The prevalence of hip dysplasia is 1 in 1000. Several pelvic osteotomy methods have been developed to prevent early osteoarthritis, such as triple osteotomy. In this study we are going to introduce our new technique that was done on 4 patients with favorable short-term results.   Methods: Four patients underwent triple osteotomy and fixation using a reconstruction plate and early ...

As a breast-imaging technique, digital breast tomosynthesis has great potential to improve the diagnosis of early breast cancer over mammography. Ray-tracing-based reconstruction algorithms, such as ray-tracing back projection, maximum-likelihood expectation maximization (MLEM), ordered-subset MLEM (OS-MLEM), and simultaneous algebraic reconstruction technique (SART), have been developed as rec...