Abstract Improving the accuracy of heart wall motion measurement is essential to realise better cardiac function evaluation. This paper proposed a two-dimensional (2D) displacement estimation method with high temporal resolution using 2D complex cross-correlation element RF signals an ultrasonic probe between frames returned from target scatterers. The application phantom confirmed its principl...

PURPOSE We propose an absolute quantitation method for metabolites with strongly coupled spin systems using localized 2-dimensional (2D) constant-time correlation spectroscopy (CT-COSY). We also develop two methods for improving the quality of in vivo CT-COSY spectra. METHODS We substituted an image selected in vivo spectroscopy (ISIS) pulse for a 180° slice pulse in the CT-COSY module to dec...

We present an automated method for tracking 3D motion in planar tagged MRI. First, displacement between successive 2D image frames is estimated from their local phase, also known as HARP. The displacement estimates then drive a 3D finite element model which tracks systolic motion. The 3D model allows for 1) estimating 3D motion from niultiple 2D tagged images and 2) for regularizing the phase e...

In this paper, the problem of estimating the partial camera displacement from two images of a static object is studied. This scaled displacement is used to design a new vision-based control scheme, called 2D 1/2 visual servoing. It must be emphasized that motion and structure can be estimated without the a priori knowledge of a 3D model of the object, which increases the versatility and the app...

The purpose of this paper is to present a new type of dynamic balancing system, having a driving solution of the rotating part based on magnetic interactions. The magnetic system also plays the role of an elastic bearing. In the first part of the article is presented the technical solution which allows the dynamic balancing evaluation depending on the radial displacement between two disks with ...

The conventional methods of boundary-conformed 2D surfaces generation usually yield some problems. This paper deals with two boundary-conformed 2D surface generation methods, one conventional approach, the linear Coons method, and a new method, boundary-conformed interpolation. In this new method, unidirectional 2D surface has been generated using some of the geometric properties of the given b...

O1 Propagator-Resolved 2D Exchange in Porous Media in the Inhomogeneous Magnetic Field Lauren Burcaw 1, Mark Hunter 2, Paul Callaghan 2 1 Victoria University of Wellington, 2 SCPS, Victoria University of Wellington We present a propagator-resolved 2D exchange spectroscopy technique for observing fluid motion in a porous medium. The susceptibility difference between the matrix and the fluid is e...

Contact probing is the preferable method for studying mechanical properties of thin two-dimensional (2D) materials. These studies are based on analysis of experimental force-displacement curves obtained by loading of a stretched membrane by a probe of an atomic force microscope or a nanoindenter. Both non-adhesive and adhesive contact interactions between such a probe and a 2D membrane are stud...

This study aims to develop a visual understanding of the macro-displacement mechanisms associated with heavy oil recovery by water and chemical flooding in 2D system. The sweep efficiency improvements water, surfactant, polymer, surfactant-polymer (SP) were evaluated Hele-Shaw cell no local pore-level trapping fluids. results demonstrated that displacement performance is highly correlated mobil...