ZHANG, WEI. Multimodal Pedagogical Planning for 3D Learning Environments A Unified Framework. (Under the Direction of Dr. James C. Lester and Dr. R. Michael Young.) Pedagogical planning lies at the heart of knowledge-based learning environments. In recent years, multimodality and authoring have become key issues in the creating of learning environments. The purpose of this research has been to ...

PURPOSE In this study two different pre-planning methods (2D vs. 3D) were compared in respect to the implant quality as judged by volumetric and dose parameters of the treatment plans. The aim of this work was to evaluate the influence of the imaging modalities used for pre-planning purpose to the treatment plan quality. MATERIAL AND METHODS Twenty-four patients treated with HDR multicatheter...

Motion planning is one of the important tasks in intelligent control of an autonomous mobile robot. Path planning is to generate a collision free path in an environment with obstacles with respect to some criterion. Trajectory planning is to schedule the movement of a mobile robot along the planned path. Several approaches have been proposed to address the problem of motion planning of a mobile...

BACKGROUND AND AIM To assess the effectiveness of the potential advantages with 3-dimensional-based treatment planning versus 2-dimensional pelvic bone-based treatment planning in patients with rectal cancer, controlled for clinical stage. METHODS AND MATERIALS Areas at risk from computed tomography in 30 patients were delineated: mesorectum, presacral, internal iliac, obturator and external ...

This paper presents results from the 2006 and 2007 test campaigns of the Canadian Space Agency's autonomous rover navigation research. In particular, results are provided in the area of terrain modelling, path planning, and 3D odometry. Results are also provided for integrated system tests whereby the rover travelled autonomously and semi-autonomously beyond its sensing horizon. It provides a s...

INTRODUCTION Three-dimensional. (3D) printing is an innovative manufacturing process that allows computer-assisted conversion of 3D imaging data into physical "printouts" Healthcare applications are currently in evolution. OBJECTIVE The objective of this study was to explore the feasibility and impact of using patient-specific 3D-printed cardiac prototypes derived from high-resolution medical...

OBJECTIVES In pediatric radiotherapy, the enhanced radiosensitivity of the developing tissues combined with the high overall survival, raise the possibility of late complications. The present study aims at comparing two dimensional (2D) and three dimensional (3D) planning regarding dose homogeneity within target volume and dose to organs at risk (OARs) to demonstrate the efficacy of 3D in decre...

In the radiation therapy of lung cancer, a free-breathing 3D-CT image is usually acquired in the treatment day for image-guided patient setup, by registering with the free-breathing 3D-CT image acquired in the planning day. In this way, the optimal dose plan computed in the planning day can be transferred onto the treatment day for cancer radiotherapy. However, patient setup based on the simple...

OBJECTIVES The aim of this study was to compare the orthodontic treatment planning for impacted maxillary canines based on conventional orthodontic treatment records versus three-dimensional (3D) information taken from single cone beam computed tomography (CBCT) scans. MATERIALS AND METHODS This study consisted of 40 individuals with impacted maxillary canines. Patients were identified from a...