In this paper, we investigated a C-arm tomographic technique as a new three dimensional (3D) kidney imaging method for nephrolithiasis and kidney stone detection over view angle less than 180o. Our C-arm tomographic technique provides a series of two dimensional (2D) images with a single scan over 40o view angle. Experimental studies were performed with a kidney phantom that was formed from a p...

Simultaneous algebraic reconstruction technique (SART) [1, 2] is an iterative method for solving inverse problems of form Ax(+n) = b. This type of problems arises for example in computed tomography reconstruction, in which case A is obtained from discrete Radon transform. In this paper, we provide several methods for derivation of SART and connections between SART and other methods. Using these...

Background An anterior cruciate ligament (ACL) rupture is a frequent injury, with short and long-term consequences if left untreated. With a view to benefitting as many patients as possible and preventing future complications, we created a low-cost ligament reconstruction technique. Method The present article describes an anatomic ACL reconstruction technique. Results The technique involves...

•A multi-layer technique for reconstruction after pelvic exenteration is proposed.•Human acellular dermal matrix used in reconstruction after total pelvic exenteration.•A reconstructive technique based on human dermis, omental flap and fat is proposed.

Three-dimensional (3D) reconstruction of electron tomography (ET) has emerged as an important technique in analyzing structures of complex biological samples. However most of existing reconstruction methods are not suitable for extremely noisy and incomplete data conditions. We present an adaptive simultaneous algebraic reconstruction technique (ASART) in which a modified multilevel access sche...

  Background: Patients with an anterior cruciate ligament-deficient varus-angulated knee may need not only an isolated high tibial osteotomy (HTO), but also an additional anterior cruciate ligament reconstruction (ACLR). A number of prospective clinical trials have been published considering the combination of HTO and ACL reconstruction. Our aim was to investigate whether one-stage combined HTO...

In this paper, we compare different industrial tomography algorithms to present the result of gamma scanning as a two-dimensional image of density distribution. In two-dimensional gamma scanning, an unconventional irradiation geometry is used and consequently many classic image reconstruction algorithms cannot be used. We tested two iterative reconstruction methods: ART (Algebraic Reconstructio...

INTRODUCTION A novel image reconstruction technique, which avoids aliasing artifacts by scalable image reconstruction in Magnetic Resonance Imaging, is proposed. The signal obtained in the phase-scrambling Fourier imaging technique can be transformed to the signal described in the Fresnel transform equation of the objects. Therefore, image reconstruction can be performed not only by inverse Fou...

Bulk allograft reconstruction plays an important role in limb-salvage reconstructive surgery but is complicated by nonunion in up to one-third of cases. Because allograft-host healing is mediated via creeping substitution, intimate bone contact is desirable. Intraoperative assessment and optimization of the allograft-host junction site using a conventional transverse osteotomy is challenging an...

a fast-modelling method contrary to CS which is time-consuming but produces far higher quality surfaces. This paper describes the construction of a suitable triangulated mesh of a reverse engineered car from which body surface reconstruction can take place. RS and CS are used independently to create two distinct models which are then compared with a suggested hybrid CAD model that takes advanta...