Introduction Patient set-up optimization is required in radiotherapy to fill the accuracy gap between personalized treatment planning and uncertainties in the irradiation set-up. In this study, we aimed to develop a new method based on neural network to estimate patient geometrical setup using 4-dimensional (4D) XCAT anthropomorphic phantom. Materials and Methods To access 4D modeling of motion...

Introduction .................................................................................................................................................................................... 3 Terminology used ......................................................................................................................................................................... 4 Concepts ......

A normal motion and segmental interrelationship has been determined as a significant factor in normal function. Yet, the relationship between distal segments and pelvic alignment needs further investigation. The aim of this study was to investigate the interrelationship between distal and proximal lower extremity segments while standing and during induced feet hyperpronation. Changes in alignme...

the vestibular system is important for the development of normal movement reactions, motion tolerance, and motor control for postural alignment, balance, and vision. a vestibular system that is damaged by disease or injury in childhood can have a major impact on a child's development. in addition, the emergence of vestibular lesions may also lead to cognitive deficits, including attention defic...

Most character motion capture data does not contain secondary motions like detailed hand motion, therefore the resultant animation looks unnatural due to the stiffness of hand motion. In this paper, we analyzed the pose space distance from the character’s motion capture data and used stepwise searching algorithm to find the key poses for hand motion synthesis. We adaptively changed the contrast...

The ability to measure similarity and alignment of motions is a key tool in motion retrieval editing. Similarity metrics based on distance functions are often utilized when measuring human motions, however, correlation can also potentially useful for alignment. This paper evaluates the use as method compares them against more established distance-based metrics. Three methods five parameterising...

The main purpose of this work is the comparison of several objective functions for optimization of the vertical alignment. To this end, after formulation of optimum vertical alignment problem based on different constraints, the objective function was considered as four forms including: 1) the sum of the absolute value of variance between the vertical alignment and the existing ground; 2) the su...

This paper summarizes the recent progress in human motion analysis and its applications. In the beginning, we reviewed the motion capture systems and the representation model of humans motion data. Next, we sketched the advanced human motion data processing technologies, including motion data filtering, temporal alignment, and segmentation. The following parts overview the state-of-the-art appr...

MEMS technology uses photolithography and etching of silicon wafers to enable mechanical structures with less than 1 um tolerance, important for the miniaturization of imaging systems. In this paper, we present the first silicon MEMS digital auto-focus camera for use in cell phones with a focus range of 10 cm to infinity. At the heart of the new silicon MEMS digital camera, a simple and low-cos...

PURPOSE Stereotactic lung radiotherapy is complicated by tumor motion from patient respiration. Four-dimensional CT (4DCT) imaging is a motion compensation method used in treatment planning to generate a maximum intensity projection (MIP) internal target volume (ITV). Image guided radiotherapy during treatment may involve acquiring a volumetric cone-beam CT (CBCT) image and visually aligning th...