PURPOSE To develop a superconducting magnetic resonance (MR) imager that provides direct access to the patient and permits interactive MR-guided interventional procedures. MATERIALS AND METHODS A 0.5-T superconducting magnet that allows a region of vertical access to the patient was designed and constructed. This magnet was integrated with newly designed shielded gradient coils, flexible surf...

ABSTRACT The purpose of this paper is twofold: (1) to outline the issues involved in designing videodisc-h'sed instruction to meet the needs of the public high school, and (2) to describe the approach tieing used in one project that is developing videodisc-based courseware for high school math and science instruction. The first of two major sections presents a rationale for interactive videodis...

This thesis explores the power of interactivity in unsupervised machine learning problems. Interactive algorithms employ feedback driven measurements to mitigate the cost of data acquisition and consequently enable statistical analysis in otherwise intractable settings. Unsupervised learning methods are fundamental tools across a variety of domains, and interactive procedures promise to broaden...

The goal of our work is the design and implementation of a virtual agents based interactive simulation for teaching and training health care workers in the proper procedures for hand hygiene. The health care trainee in the simulation plays the role of a health care inspector in a virtual hospital that resembles a real hospital. The interactive training simulation features a virtual instructor w...

We describe diagram-based formal methods for verifying temporal properties of nite-and innnite-state reactive systems. These methods , which share a common background and tools, diier in the way they use automatic procedures within an interactive setting based on deduction. They can be used to produce a static proof object, or to perform incremental analysis of systems and speciications.

Numerical simulation of deformable objects is an important problem in biomechanical engineering and computational science. A significant class of problems in this area requires that the simulation results are presented both haptically and graphically in real time (an example being a medical training simulator based on virtual reality). In such cases various types of trade-offs between accuracy ...

We describe an interactive, intraoperative imaging-guided method for performing endoscopic sinus surgery (ESS) within a vertically open MR system. The procedure was performed with intraoperative imaging using a 0.5-T magnet with a 56-cm vertical gap. Interactive control of imaging planes was accomplished by optical tracking with two infrared light-emitting diodes mounted on an aspirator probe. ...

We present an approach for the automatic generation, interactive exploration and real-time modification of disassembly procedures for complex, multipartite CAD data sets. In order to lift the performance barriers prohibiting interactive disassembly planning, we run a detailed analysis on the input model to identify recurring part constellations and efficiently determine blocked part motions in ...

The purpose of this case report is to describe a new intervention, the Interactive Metronome, for improving timing and coordination. A nine-year-old boy, with difficulties in attention and developmental delay of unspecified origin underwent a seven-week training program with the Interactive Metronome. Before, during, and after training timing, accuracy was assessed with testing procedures consi...