Abstract: Methods, computing devices, and magnetic resonance imaging systems that improve image quality in turbo spiral echo (TSE) imaging are disclosed. With this technology, a TSE pulse sequence is generated that includes a series of radio frequency (RF) refocusing pulses to produce a corresponding series of nuclear magnetic resonance (NMR) spin echo signals. A gradient waveform including a plurality of segments is generated. The plurality of segments collectively comprise a spiral ring retraced in-out trajectory. During an interval adjacent to each of the series of RF refocusing pulses, a first gradient pulse is generated according to the gradient waveform. The first gradient pulses encode the NMR spin echo signals. An image is then constructed from digitized samples of the NMR spin echo signals obtained based at least in part on the encoding.

Abstract: A system and method for providing interactive learning applications on a television and managing the learning process is disclosed. The learning management technology utilizes internet, television, and learning management systems to allow a student to interactively access learning content. The functionality of the learning management system may be accessed on a television via a host server. The interactive application further allows parents and teachers to monitor student performance, change the learning content, control workflow, and send messages and reminders to the student. The interactive application further allows restriction of television viewing based on learning results or until an assignment has been completed. The learning content may be copied or downloaded onto a computer readable medium (e.g., a memory stick) from a central location (e.g., a Kiosk). The learning content may then be copied or uploaded to a television set-top box for execution by the television set-top box.