Magnetic resonance imaging in children: common problems and possible solutions for lung and airways imaging

Pediatric chest MRI is challenging. High-resolution scans of the lungs and airways are compromised by long imaging times, low lung proton density and motion. Low signal is a problem of normal lung. Lung abnormalities commonly cause increased signal intenstities. Among the most important factors for a successful MRI is patient cooperation, so the long acquisition times make patient preparation crucial. Children usually have problems with long breath-holds and with the concept of quiet breathing. Young children are even more challenging because of higher cardiac and respiratory rates giving motion blurring. For these reasons, CT has often been preferred over MRI for chest pediatric imaging. Despite its drawbacks, MRI also has advantages over CT, which justifies its further development and clinical use. The most important advantage is the absence of ionizing radiation, which allows frequent scanning for short- and long-term follow-up studie

Applications of an Online Audience Response System in Different Academic Settings: An Empirical Study

Technology dependent, digitally innate students are joining academia. Consequently, traditional pedagogical techniques for achieving desired learning outcomes are not universally sufficient. Digital clickers were introduced in the early 2000 for engaging students and maintaining their attention span during lectures. However, some studies are critical about their usage as they consume valuable time during the class which can result in further compromises concerning achieving learning outcomes. This study aimed to investigate the application of an online Audience Response System (ARCH) a.k.a “clicker” in different academic settings. To achieve this, the researchers conducted an empirical study that identified the effectiveness of using an online ARCH in multiple academic use cases. The use cases consisted of audiences with varying academic backgrounds and levels of academic achievement. All the presented topics were related to research in cybersecurity. The study identified that clickers can be a useful tool for audience engagement in a complex topic like cybersecurity

Finding the middle ground: how kinetochores power chromosome congression

ISSN:1420-682XISSN:1420-907