نتایج جستجو برای: 3d images

تعداد نتایج: 426200  

2017
Anuja K. Antony Emilie C. Robinson Katherine A. Kopkash Andrea Madrigrano

INTRODUCTION: Pre-pectoral direct to implant (DTI) breast reconstruction has historically been fraught with complications including flap necrosis, implant extrusion, and capsular contracture as well as extremely high rates of operative revisions. This may result from a number of factors, including the lack of an algorithmic approach, failure to predict postoperative migration of the implant, us...

A Pakizeh Moghadam, J Haddadnia, M Eskandari M J Monaghan

Background: Mechanical occlusion of the Left atrial appendage (LAA) using a purpose-built device has emerged as an effective prophylactic treatment in patients with atrial fibrillation at risk of stroke and a contraindication for anticoagulation. A crucial step in procedural planning is the choice of the device size. This is currently based on the manual analysis of the “Device Landing Zone” fr...

2011
Antoine Serrurier Sergio Quijano Wafa Skalli

3D bone reconstructions from biplanar radiographs showed an increasing interest in the last decade. Three-dimensional (3D) reconstruction process of the femur as proposed by recent works (Chaibi et al., CMBBE, 2011) relies on the identification by an operator of a few landmarks on the radiographs to initiate the procedure. Among others landmarks, the operator needs to identify the medial and la...

2014
Timm Schneevoigt Christopher Schroers Joachim Weickert

We propose a novel pipeline for 3D reconstruction from image sequences that solely relies on dense methods. At no point sparse features are required. As input we only need a sequence of color images capturing a static scene while following a continuous path. Furthermore, we assume that an intrinsic camera calibration is known. Our pipeline comprises three steps: (1) First, we jointly estimate c...

2015
Alon Diament Tamir Tuller

The study of the 3D architecture of chromosomes has been advancing rapidly in recent years. While a number of methods for 3D reconstruction of genomic models based on Hi-C data were proposed, most of the analyses in the field have been performed on different 3D representation forms (such as graphs). Here, we reproduce most of the previous results on the 3D genomic organization of the eukaryote ...

2008
Kalin Kolev Daniel Cremers

We propose a convex framework for silhouette and stereo fusion in 3D reconstruction from multiple images. The key idea is to show that the reconstruction problem can be cast as one of minimizing a convex functional where the exact silhouette consistency is imposed as a convex constraint that restricts the domain of admissible functions. As a consequence, we can retain the original stereo-weight...

Journal: :AJNR. American journal of neuroradiology 2012
M Kitajima T Hirai Y Shigematsu H Uetani K Iwashita K Morita M Komi Y Yamashita

BACKGROUND AND PURPOSE Although 3D FLAIR imaging visualizes detailed structures of the brain stem, it has not been used to evaluate its normal anatomy. The purpose of this study was to evaluate whether 3D FLAIR images can provide more detailed anatomic information of the brain stem than 2D FLAIR and 2D T2WI. MATERIALS AND METHODS We prospectively evaluated MR images in 10 healthy volunteers. ...

Journal: :journal of dentistry, tehran university of medical sciences 0
rajaa mahdi musawi tehran university of medical sciences/ school of dentistry farzaneh farid farid

during dental education, dental students learn how to examine patients, make diagnosis, plan treatment and perform dental procedures perfectly and efficiently. however, progresses in computer-based technologies including virtual reality (vr) simulators, augmented reality (ar) and computer aided design/computer aided manufacturing (cad/cam) systems have resulted in new modalities for instruction...

Journal: :iranian journal of radiology 0
hamed naghibi school of allied medical sciences, shahid beheshti university of medical sciences,tehran, iran hedayatolah soroush advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran fariborz faeghi radiology technology department, school of allied medical sciences, shahid beheshti university of medical sciences,tehran, iran; radiology technology department, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran madjid shakiba advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran amir reza farhoud department of orthopedics, imam hospital complex, tehran university of medical sciences (tums), tehran, iran hassan hashemi advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran

conclusion high-resolution mr images of the wrist using 3d t2space, pd blade and t2 blade were superior to those using conventional sequences quantitatively. high-snr and cnr mr imaging with space and blade would be a promising method to diagnose wrist lesions. results snr of the cartilage, tfcc on 3d t2space and t1 fse was better than other sequences (p < 0.001). snr of the bone on pd blade wa...

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