scholarly journals Transition to mammography in the regular computed tomography simulation and reconstruction software

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
A.S. Kussainov ◽  
Y.V. White ◽  
M.A. Em ◽  
E.T. Myrzabe ◽  
E.T. Salavatova ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Reconstruction Software

scholarly journals Anatomical description of the skulls of peccaries (Tayassu tajacu, Linnaeus 1758) by computed tomography

2021 ◽  
Vol 73 (4) ◽  
pp. 861-867
Author(s):  
J.R. Araújo ◽  
R.P.S. Rodrigues ◽  
F.C.A. Sousa ◽  
L.S. Moura ◽  
A.B.S. Silva ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
Nasal Bone ◽  
Preclinical Research ◽  
Anatomical Structures ◽  
3D Images ◽  
Reconstruction Software ◽  
Important Diagnostic Tool ◽  
Palatal Bone ◽  
Parietal Bones

ABSTRACT The aim of this study was to evaluate the anatomical structures of the skulls of peccaries to establish the basis for their clinical study and future preclinical research. Ten skulls of adult peccaries were subjected to tomographic examination. The data obtained were processed via three-dimensional image reconstruction software (3D images). The reconstructions obtained from the neurocranium of the studied specimens allowed the identification and description of the following structures: nasal bone, frontal bone, parietal bones, incisor bone, maxillary bone, zygomatic bone, temporal bone, palatal bone, occipital bone, vomer bone, pterygoid bone, sphenoid bone, paranasal sinuses and orbit. Computed tomography proved to be an important diagnostic tool in the investigation of the skull of this species, allowing the acquisition of anatomical values not yet documented for the species in the literature.

scholarly journals Introduction: a brief overview of iterative algorithms in X-ray computed tomography

2015 ◽  
Vol 373 (2043) ◽  
pp. 20140399 ◽  
Author(s):  
M. Soleimani ◽  
T. Pengpen
Keyword(s):  
Computed Tomography ◽  
High Performance ◽  
Large Scale ◽  
Krylov Subspace ◽  
Iterative Algorithms ◽  
Computational Time ◽  
X Ray ◽  
Reconstruction Software ◽  
X Ray Computed ◽  
Linear Systems Of Equations

This paper presents a brief overview of some basic iterative algorithms, and more sophisticated methods are presented in the research papers in this issue. A range of algebraic iterative algorithms are covered here including ART, SART and OS-SART. A major limitation of the traditional iterative methods is their computational time. The Krylov subspace based methods such as the conjugate gradients (CG) algorithm and its variants can be used to solve linear systems of equations arising from large-scale CT with possible implementation using modern high-performance computing tools. The overall aim of this theme issue is to stimulate international efforts to develop the next generation of X-ray computed tomography (CT) image reconstruction software.

Preoperative evaluation of bone destruction using three-dimensional computed tomography in cholesteatoma

2004 ◽  
Vol 118 (10) ◽  
pp. 827-829 ◽  
Author(s):  
Chul Ho Jang ◽  
Pa-Chun Wang
Keyword(s):  
Computed Tomography ◽  
Preoperative Evaluation ◽  
Three Dimensional ◽  
Chronic Otitis Media ◽  
Bone Destruction ◽  
Two Dimensional ◽  
Bony Destruction ◽  
Dimensional Reconstruction ◽  
Reconstruction Software ◽  
Ct Data

This study investigated the usefulness of three-dimensional computed tomography (3DCT) in the evaluation of bony defects caused by cholesteatoma. Fifteen patients with chronic otitis media with cholesteatoma who showed bony destruction or suspicious destruction in two-dimensional CT were examined using 3DCT. The CT data were transferred to a workstation witha real-time image processor. We used three-dimensional reconstruction software enabling image processing. In all patients, 3DCT clearly delineated the destruction of bony structures by cholesteatoma. The 3DCT-generated images provided spatial relationships, which were not easily appreciated on two-dimensional CT. Intraoperative bony destruction findings correlated with 3DCT findings. From these results, 3DCT could be useful to evaluate the invasiveness of cholesteatoma to the cranial base. It could also be helpful in planning reconstruction during surgery.

X-ray microtomography

1988 ◽  
Vol 46 ◽  
pp. 998-999
Author(s):  
H.W. Deckman ◽  
B.F. Flannery ◽  
J.H. Dunsmuir ◽  
K.D' Amico
Keyword(s):  
Computed Tomography ◽  
Internal Structure ◽  
Imaging Technique ◽  
Three Dimensional ◽  
Tissue Structure ◽  
Individual Element ◽  
X Ray ◽  
Non Invasive ◽  
Panoramic Imaging ◽  
Three Dimensional Images

We have developed a new X-ray microscope which produces complete three dimensional images of samples. The microscope operates by performing X-ray tomography with unprecedented resolution. Tomography is a non-invasive imaging technique that creates maps of the internal structure of samples from measurement of the attenuation of penetrating radiation. As conventionally practiced in medical Computed Tomography (CT), radiologists produce maps of bone and tissue structure in several planar sections that reveal features with 1mm resolution and 1% contrast. Microtomography extends the capability of CT in several ways. First, the resolution which approaches one micron, is one thousand times higher than that of the medical CT. Second, our approach acquires and analyses the data in a panoramic imaging format that directly produces three-dimensional maps in a series of contiguous stacked planes. Typical maps available today consist of three hundred planar sections each containing 512x512 pixels. Finally, and perhaps of most import scientifically, microtomography using a synchrotron X-ray source, allows us to generate maps of individual element.

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