OBJECTIVES The goal of this study was to compare regadenoson and dipyridamole hyperemia for quantitative myocardial perfusion imaging. BACKGROUND Regadenoson is commonly used for stress perfusion imaging. However, no study in nuclear cardiology has employed a paired design to compare quantitative hyperemic flow from regadenoson to more traditional agents such as dipyridamole. Additionally, th...

BACKGROUND There is marked variation in the use of the arteriovenous fistula (AVF) across programmes, regions and countries not explained by differences in patient demographics or comorbidities. The lack of clear criteria of who should or should not get a fistula may contribute to this, as well as barriers to creating AVFs. METHODS We conducted a survey of Canadian and American nephrologists ...

Sequence mining is often conducted over static and temporal datasets as well as over collections of events (episodes). More recently, there has also been a focus on the mining of streaming data. However, while many sequences are associated with absolute time values, most sequence mining routines treat time in a relative sense, only returning patterns that can be described in terms of Allen-styl...

Previous work on the intonational phonology of Miami Cuban (MC) Spanish [1, 2, 3] has revealed that broad focus declaratives and absolute interrogatives have the same nuclear tones. In laboratory speech, [2] found that these two sentence types, when compared paradigmatically, show significant differences in peak scaling and pitch range [2]. The present study examined peak scaling with syntagmat...

Most of the Latin America countries which have introduced market-friendly economic reforms during the course of the last two decades have also suffered serious increases in inequality; the systematic timing coincidence of the two events suggests that the reforms have been one of the causes of the worsening distribution. That major increases in inequality have occurred in many Latin American cou...

We introduce the Generative Template of Features (GTF), a parts-based model for visual object category detection. The GTF consists of a number of parts, and for each part there is a corresponding spatial location distribution and a distribution over ‘visual words’ (clusters of invariant features). The performance of the GTF is evaluated for object localisation, and it is shown that such a relat...

Although the use of renal replacement therapy (RRT) to support critically ill patients with acute kidney injury (AKI) has become routine, many of the fundamental questions regarding optimal management of RRT remain. This review summarizes current evidence regarding the timing of initiation of RRT, the selection of the specific modality of RRT, and prescription of the intensity of therapy. Altho...

In this paper, we address issues in situated language understanding in a rapidly changing environment – a moving car. Specifically, we propose methods for understanding user queries about specific target buildings in their surroundings. Unlike previous studies on physically situated interactions such as interaction with mobile robots, the task is very sensitive to timing because the spatial rel...