Roger Ho-Yin Leung

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BACKGROUND Critically ill patients commonly experience skeletal muscle wasting that may predict clinical outcome. Ultrasound is a noninvasive method that can measure muscle quadriceps muscle layer thickness (QMLT) and subsequently lean body mass (LBM) at the bedside. However, currently the reliability of these measurements are unknown. The objectives of(More)
BACKGROUND In critically ill patients, muscle atrophy is associated with long-term disability and mortality. Bedside ultrasound may quantify muscle mass, but it has not been validated in the intensive care unit (ICU). Here, we compared ultrasound-based quadriceps muscle layer thickness (QMLT) with precise quantifications of computed tomography (CT)-based(More)
Dear Editor, A 68-year-old man (case 1) presented with multiple 3-cm scalp nodules. A punch biopsy showed an infiltrate of pleomorphic medium to large size CD20+ve lymphoid cells, compatible with follicular large cell B-cell lymphoma (Fig. 1a). Bilateral marrow staging, complete blood counts, and whole body computerized tomography (CT) were negative. A(More)
BACKGROUND Metabolic syndrome (MetS) is a medical condition with major complications and health care costs. Previous research has shown that diet and exercise can improve and reverse this condition. The goal of this study was to test the feasibility and effectiveness of implementing the Canadian Health Advanced by Nutrition and Graded Exercise (CHANGE)(More)
This paper is concerned with language modeling (LM) for large vocabulary speech recognition in Mandarin Chinese. As the language characteristics of Chinese are quite unique, we investigate some novel techniques in language modeling. We also borrow some of techniques that have been applied to other languages. Experiments have been conducted on the Call Home(More)
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