نتایج جستجو برای: 3d ultrasound

تعداد نتایج: 294066  

Journal: :The Journal of cardiovascular management : the official journal of the American College of Cardiovascular Administrators 2003
Edward A Gill

“Live 3D Echo” is the latest development in three-dimensional ultrasound and is providing clinicians a new, and arguably much improved, view of the complexities and inter-relationships of cardiac anatomy non-invasively. Three-dimensional ultrasound has been available for several years to scan an ever-increasing array of body parts. Acquiring real-time 3D ultrasonic views of the heart has until ...

Journal: :The British journal of radiology 1999
C P Allott C D Barry R Pickford J C Waterton

The aim of this study was to establish the reproducibility of sequential three-dimensional (3D) ultrasound reconstructions of an identified segment of the carotid artery bifurcation in asymptomatic subjects. A freehand acquisition, compound reconstruction, 3D ultrasound system was used on three occasions, over a period of 1 year. The lumen of the vessel was reconstructed to provide a volume mea...

2013
Liu Li Wenguang Hou Xuming Zhang Mingyue Ding

Speckle suppression plays an important role in improving ultrasound (US) image quality. While lots of algorithms have been proposed for 2D US image denoising with remarkable filtering quality, there is relatively less work done on 3D ultrasound speckle suppression, where the whole volume data rather than just one frame needs to be considered. Then, the most crucial problem with 3D US denoising ...

Journal: :Ultrasound in Obstetrics & Gynecology 2018

2007
Paul Martin Novotny Robert D. Howe

Real-time three-dimensional ultrasound has been demonstrated as a viable tool for guiding surgical procedures. This visualization technique enables a range of new minimally invasive techniques in cardiac surgery. Ultrasound permits visualization through the opaque blood pool in the heart, and the advent of real-time 3DUS overcomes difficulties with 3D spatial perception in conventional 2D ultra...

Journal: :Ultrasound in medicine & biology 2004
Joel E. Lindop Graham M. Treece Andrew H. Gee Richard W. Prager

We present an elastography system using freehand 3D ultrasound. A review is provided of the standard elastography methods that have been adapted for this purpose. The scanning protocol is simple and promising results are presented of 3D strain images from freehand scans. Robustness is a problem, however, and the main sources of error are explained. Measures have been developed to improve the qu...

Journal: :CoRR 2008
Pierre Mozer Michael Baumann Grégoire Chevreau Vincent Daanen Alexandre Moreau-Gaudry Jocelyne Troccaz

Introduction and Objective: Prostate biopsies are mainly performed under 2D TransRectal UltraSound (TRUS) control by sampling the prostate according to a predefined pattern. In case of first biopsies, this pattern follows a random systematic plan. Sometimes, repeat biopsies can be needed to target regions unsampled by previous biopsies or resample critical regions (for example in case of cancer...

Journal: :American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics 2010
Jure Volk Maksimiljan Kadivec Maja Marolt Mušič Maja Ovsenik

INTRODUCTION Incorrect tongue posture on the mouth floor is considered an important factor in the etiology of unilateral posterior crossbite. The aim of this study was to objectively assess tongue posture in children with unilateral posterior crossbite and those with normal deciduous dentition by using 3-dimensional (3D) ultrasonography. METHODS First, referential 3D ultrasound images for dif...

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