Our attention is focused here on a class of materials each of whose response to a particular motion is invariant under certain changes in time scale. We establish conditions on the given motion under which this invariance can in principle be detected by means of the following procedure: subject identical specimens to motions which differ from the given one only by the appropriate changes in tim...

The variable block size(VBS) motion estimation technique allows for larger blocks to be used when smaller blocks yield little gain, saving bit rates especially for areas containing more complex motion. However, the employment of the VBS motion estimation technique introduces a new optimization issue for the motion compensated transform coding, because an increase in bit rate allocation is neces...

Novel technology has made dynamic magnetic resonance imaging (MRI) of lung motion and lung tumour mobility during continuous respiration feasible. This might be beneficial for planning of radiotherapy of lung tumours, especially when using high precision techniques. This paper describes the recent developments to analyze and visualize pulmonary nodules during continuous respiration using MRI. B...

We present the case of a 28-year-old woman with oto-spondylo-megaepiphyseal dysplasia, which is a rare skeletal disorder, who underwent bilateral total hip arthroplasty. Full-scale three-dimensional plaster model of the acetabulum and the femur provided us with a feasible preoperative plan. Pre- and postoperative three-dimensional motion analyses proved a significant improvement in her ambulati...

We present a method for spotting sporadically occurring gestures in a continuous data stream from body-worn inertial sensors. Our method is based on a natural partitioning of continuous sensor signals and uses a two-stage approach for the spotting task. In a first stage, signal sections likely to contain specific motion events are preselected using a simple similarity search. Those preselected ...

Introduction T2and diffusion-weighted imaging are useful as non-contrast-enhanced MRI techniques; however both are limited by low-resolution and blurring [1,2]. The Fast Acquisition Double Echo (FADE) sequence is a 3D steady-state sequence with two echoes per TR; spoiler gradients that separate the echoes provide diffusion weighting. FADE enables high-resolution T2and diffusion-weighting imagin...