AIMS Three-dimensional (3D)-echocardiography speckle imaging allows the evaluation of frame-by-frame strain and volume changes simultaneously. The aim of the present investigation was to describe the strain-volume combined assessment in different patterns of cardiac remodelling. METHODS AND RESULTS Fifty patients received a 3D acquisition. Patients were classified as follows: healthy subjects...

Introduction: 2D Tagging acquisition of the orbit during eye movement have proven to give new inside into the mechanical properties of orbital tissues,[1] and to be a valuable tool for investigating diseases etiologies.[2] 3D tagging acquisition have been shown to be feasible in a scantime short enough to enable motion reproducibility.[3] Nevertheless, the missing of an appropriate postprocessi...

Osteocytes, the major type of bone cells which reside in their lacunar and canalicular system within the bone matrix, function as biomechanosensors and biomechanotransducers of the bone. Although biomechanical behaviour of the osteocyte-lacunar-canalicular system has been investigated in previous studies mostly using computational 2-dimensional (2D) geometric models, only a few studies have use...

BACKGROUND Non-ischemic dilated cardiomyopathy (DCM) is the most common cardiomyopathy worldwide, with significant mortality. Correct evaluation of the patient's myocardial function has important clinical significance in the diagnosis, therapeutic effect assessment and prognosis in non-ischemic DCM patients. This study evaluated the feasibility of three-dimensional speckle tracking imaging (3D-...

BACKGROUND AND OBJECTIVES We evaluated the utility of two-dimensional (2D) and three-dimensional (3D) left ventricular (LV) global myocardial deformity parameters for assessing LV diastolic function by comparing invasive measures of LV performance. SUBJECTS AND METHODS Echocardiography and LV pressure were assessed in 39 patients. Myocardial LV longitudinal, circumferential, and radial deform...

INTRODUCTION: Comprehensive characterization of myocardial viability continues to be of diagnostic interest to clinicians. Magnetic resonance (MR) tagging is considered the gold standard imaging tool for noninvasive assessment of functional viability in the form of mechanical strain tensors [1]. Principal strain orientations, which correspond to directions of maximal deformations (stretching, c...

Offshore pipelines are usually constructed by the use of girth welds, while welds may naturally contain flaws. Currently, fracture assessment procedures such as BS 7910 are based on the stress-based methods and their responses for situations with large plastic strain is suspicious. DNV-OS-F101 with limited modifications proposes a strain-based procedure for such plastic loads. In this paper 3D ...

The aim of the present study was to find out whether early cardiac changes in patients receiving chemotherapy can be detected by the conventional and deformation parameters of 2D and 3D echocardiography. Twenty-five healthy subjects with normal regional left ventricular function (group 1) and 25 patients receiving chemotherapy (group 2) underwent 2D and 3D transthoracic echocardiography (Toshib...

This paper gives a method of quantifying (small) visual differences between 3D mesh models with conforming topology, based on the theory of strain fields. Our experiments show that our difference estimates are well correlated with human perception of differences. This work has applications in the evaluation of 3D mesh watermarking, 3D mesh compression reconstruction, and 3D mesh filtering.