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Brown Tumors or Bone Metastases in Context of Parathyroid Carcinoma: A Diagnostic Chall... - 0 views

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    Parathyroid carcinoma is a rare cause of primary hyperparathyroidism. When this malignancy is diagnosed, often there are distant metastases (usually liver and/or bone). Brown tumor is a localized form of osteitis fibrosa cystica; classic manifestation in bone of excess parathyroid hormone and this is a bening pathology. We encountered an unusual case of parathyroid carcinoma with images that mimicked metastatic bone tumors, whose differential diagnosis with brown tumor may be complicated. Positron emission tomography/computed tomography (PET/CT) scan was requested for the evaluation of fluorodeoxyglucosa uptake of these lesions. PET/CT images showed multiple hypermetabolic images that mimicked multiple skeletal metastasis but brown tumors could not be dismissed.
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Article - Lamb Waves for Detection of Delamination in Composite Plates - 0 views

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    This study is concerned with the aeroelastic behavior of a laminated composite rectangular plate with temperature dependent material properties. Plate equations for homogenous linear elastic material and small deformations are derived in the frame of the Kirchhoff theory. Uniform and linear temperature distributions are considered on the layered composite plate and it is assumed that the material properties of fiber and matrix vary with the temperature. For more info : http://scidoc.org/IJASAR-2470-4415-03-401.php
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