نتایج جستجو برای: dimensional tomography

تعداد نتایج: 569408  

Journal: :British heart journal 1994
T Bartel S Müller A Geibel

Classic cor triatriatum is rarely found in adults. Preoperative assessment of classic cor triatriatum in a 22 year old man without symptoms by three dimensional echocardiography was more informative than transoesophageal echocardiography or magnetic resonance imaging, which both showed only a small hole in the membrane separating the accessory atrium from the true left atrium. The size of the h...

Journal: :Circulation research 2017
Matthew Bramlet Laura Olivieri Kanwal Farooqi Beth Ripley Meghan Coakley

Three-dimensional (3D) printing technology allows for the translation of a 2-dimensional medical imaging study into a physical replica of a patient’s individual anatomy. 3D printed models can facilitate a deeper understanding of complex patient anatomy and can aid in presurgical decision-making. Although there are 3D printing case reports in almost every subspecialty of medicine to date, the ra...

1996
David A. Reimann Vipin Chaudhary Michael J. Flynn Ishwar K. Sethi

Three dimensional computed tomography is a computationally intensive procedure, requiring large amounts of R A M and processing power. Parallel methods for two dimensional computed tomography have been studied, but not edended or applied to 3D cone beam tomography. A discussion on how the 3D cone beam tomography problem can be implemented in parallel using MPI is given. W e show an improvement ...

C.H. Xie, D.Z. Jiang, H. Liu, J. Zhang, X.T. Huang, Y.F. Zhou, Z.R. Bao,

Background: Cone-beam computed tomography (CBCT) scanners for image-guided radiotherapy are in clinical use today, but there has been no consensus on uniform acceptance to verify the CBCT image quality yet. The present work proposed new methods to fully evaluate the performance of CBCT in its three-dimensional (3D) reconstruction space. Materials and Methods: Compared to the traditional methods...

2007
Aiyou Chen Jin Cao

Network tomography has been regarded as one of the most promising methodologies for performance evaluation and diagnosis of the massive and decentralized Internet. This paper proposes a new estimation approach for solving a class of inverse problems in network tomography, based on marginal distributions of a sequence of one-dimensional linear projections of the observed data. We give a general ...

Background: The aim of this study was to assess differences in fracture morphology and displacement betweenisolated greater tuberosity (GT) fractures (i.e. fractures of the greater tuberosity without other fractures of the proximalhumerus) with and without shoulder dislocation utilizing quantitative 3-dimensional CT imaging.Methods: Thirty-four CT-scans of isolated greater tuberosity fractures ...

2017
Enrico Dall’Ara Marta Peña-Fernández Marco Palanca Mario Giorgi Luca Cristofolini Gianluca Tozzi

Citation: Dall’Ara E, Peña-Fernández M, Palanca M, Giorgi M, Cristofolini L and Tozzi G (2017) Precision of Digital Volume Correlation Approaches for Strain Analysis in Bone Imaged with Micro-Computed Tomography at Different Dimensional Levels. Front. Mater. 4:31. doi: 10.3389/fmats.2017.00031 Precision of Digital Volume correlation approaches for strain analysis in Bone imaged with Micro-compu...

2012
Roland Partridge Noel Conlisk Jamie A. Davies

The development of the microscope in 1590 by Zacharias Janssenby and Hans Lippershey gave the world a new way of visualizing details of morphogenesis and development. More recent improvements in this technology including confocal microscopy, scanning electron microscopy (SEM) and optical projection tomography (OPT) have enhanced the quality of the resultant image. These technologies also allow ...

Journal: :فیزیک زمین و فضا 0
محمدکاظم حفیظی مؤسسه ژئوفیزیک دانشگاه تهران، دانشیار بهمن عباسی مؤسسه ژئوفیزیک دانشگاه تهران- دانشجوی کارشناسی ارشد احمد اشتری تلخستانی مؤسسه ژئوفیزیک دانشگاه تهران- دانشجوی کارشناسی ارشد

introduction: occurrence of landslides depends on several factors such as the composition and structure of earth materials, rainfall level, temperature, groundwater regime and cover crops. landslides are a main natural hazard in iran, because of its special geological conditions and its mountainous active tectonic regime. linear civil structures, such as roads, highways and railways, face serio...

Journal: :Journal of dental research, dental clinics, dental prospects 2015
Saurabh Kumar Gupta Payal Saxena Shaleen Khetarpal Mishthu Solanki

We report a rare case of a two-rooted maxillary central incisor, stressing the importance of three-dimensional imaging in treatment planning and conservative approach of management. Endodontic treatment of this central incisor was carried out with a successful outcome.

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