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PURPOSE The flow convergence region (FCR) method (also known as the proximal isovelocity surface area method) is currently used in echocardiography to evaluate the flow through cardiac valves and septal defects. The FCR method is based on the characteristic alterations in flow dynamics that occur proximal to a stenotic orifice. Blood converges uniformly and(More)
INTRODUCTION Squamous cell carcinoma represents about 90% of malignancies of the mouth and about 38% of the head and neck tumors. The behavior of the cancer is very aggressive, presenting early cervical metastasis and, often contralateral ranging from 0.9 to 36%. OBJECTIVES This study aims to analyze clinical and pathological factors that may influence(More)
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