Results 121 to 130 of about 13,263 (160)

Volumetric reconstruction and stereotactic computer assisted resection in intracerebral lesions

Acta Neurochirurgica, 1996
Since 1990 112 patients have undergone stereotactic resection of intra-axial tumoural lesions with volumetric reconstruction, using the Kelly-Goerss system. Stereotactic integration of CT, angiographic and particularly MRI information, together with three-dimensional information of the lesion, provide an innovative evaluation of the most appropriate ...
M, Skrap, C, Sidoti, A, Melattini, A, Vassallo   +3 more
openaire   +2 more sources

High‐Quality Volumetric Reconstruction on Optimal Lattices for Computed Tomography

Computer Graphics Forum, 2009
AbstractWithin the context of emission tomography, we study volumetric reconstruction methods based on the Expectation Maximization (EM) algorithm. We show, for the first time, the equivalence of the standard implementation of the EM‐based reconstruction with an implementation based on hardware‐accelerated volume rendering for nearest‐neighbor (NN ...
Bernhard Finkbeiner, Usman R. Alim, Dimitri Van De Ville, Torsten Möller   +3 more
openaire   +1 more source

Parallel computation for rapid reconstruction of volumetric ultrasonic images

IEEE 1992 Ultrasonics Symposium Proceedings, 2003
A massively parallel computer, the Princeton Engine (PE), is applied to the task of volumetric ultrasound image reconstruction. Results are compared with those obtained on a conventional, sequential computer (a Sun SparcStation 1). The PE reduces reconstruction times by a factor of approximately 500 over the Sun, making possible the creation of a ...
Y. Gorfu, P. Schattner
openaire   +1 more source

Two-way volumetric computational integral imaging reconstruction

5th International Conference on Visual Information Engineering (VIE 2008), 2008
Computational integral imaging (CII) method based on volumetric computational reconstruction (VCR) can digitally provide depth-dependent plane images of 3D object for 3D object recognition. However, it has some problems including the resolution degradation of 3D reconstructed image and heavy computation cost as the reconstruction distance increases. In
C.W. Tan, D.H. Shin, B.G. Lee
openaire   +1 more source

A model for soil computed tomography based on volumetric reconstruction, Wiener filtering and parallel processing

Computers and Electronics in Agriculture, 2015
It was developed parallel model for agricultural computed tomographic.The speedup values obtained in 2D/3D reconstructions was considered satisfactory.Model can be mapped for different parallel environments, such as DSP or conventional.Tools developed to view the 2D/3D reconstruction have helped analysis of the results.We establish of a new model for ...
Maurício Fernando Lima Pereira, Paulo Estevão Cruvinel   +1 more
openaire   +1 more source

An Algorithm for Fast Computation of 3D Krawtchouk Moments for Volumetric Image Reconstruction

2016
Discrete Krawtchouk moments are powerful tools in the field of image processing application and pattern recognition. In this paper we propose an efficient method based on matrix multiplication and symmetry property to compute 3D Krawtchouk moments. This new method is used to reduce the complexity and computational time for 3D object reconstruction. The
Abderrahim Mesbah, Mostafa El Mallahi, Hakim El Fadili, Khalid Zenkouar, Aissam Berrahou, Hassan Qjidaa   +5 more
openaire   +1 more source

Pulmonary nodule volumetric accuracy of a deep learning-based reconstruction algorithm in low-dose computed tomography: A phantom study

Physica Medica, 2022
To compare the image properties and pulmonary nodule volumetric accuracies among deep learning-based reconstruction (DLR), filtered back projection (FBP), and hybrid iterative reconstruction (hybrid IR) in low-dose computed tomography (LDCT).A multipurpose chest phantom containing artificial spherical pulmonary nodules with 5-, 8-, 10-, and 12-mm ...
Shota Watanabe, Kenta Sakaguchi, Shigetoshi Kitaguchi, Kazunari Ishii   +3 more
openaire   +2 more sources

Computer-Assisted Volumetric Analysis and Quantitatively Anophthalmic Orbit Reconstruction With Dorsalis Pedis Flap and Bone Graft

Journal of Craniofacial Surgery, 2018
Abstract Current approaches to orbit reconstruction are based on the assumption of facial symmetry and surgeons’ experiences, and the reconstructed orbits are not precise. Through computer-assisted volumetric quantitative analysis, the volume of the bony orbit, and the volume of the soft tissues in both the anophthalmic orbit ...
Li-Ying, Cheng, Wei-Wei, Bian, Xiao-Ming, Sun, Zhe-Yuan, Yu, Ying, Zhang, Lu, Zhang, Yu-Guang, Zhang, Rong, Jin   +7 more
openaire   +2 more sources

Volumetric Planning Using Computed Tomographic Angiography Improves Clinical Outcomes in DIEP Flap Breast Reconstruction

Plastic & Reconstructive Surgery, 2016
Background: The present study evaluated outcomes of deep inferior epigastric perforator (DIEP) flap breast reconstruction using volumetric planning—which is preoperative planning based on volumetric data of the breast and flap estimated from computed tomographic angiography. Methods:
Kyeong-Tae, Lee, Goo-Hyun, Mun
openaire   +2 more sources

Computed Tomographic-Based Volumetric Reconstruction of the Pulmonary System in Scoliosis

Journal of Pediatric Orthopaedics, 2007
Scoliosis has been associated with reduced pulmonary capacity; however, the source of the reduction in capacity (left, right, or both lungs) is not clear. The objective of this study was to investigate trends in left, right, and total lung volume and left/right lung volume asymmetry with spinal curve severity in scoliosis.Three-dimensional volumetric ...
Adam, Clayton J., Cargill, Sara C., Askin, Geoffrey N.   +2 more
openaire   +5 more sources