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Titlebook: CT Densitometry in Osteoporosis; The impact on manage L. E. H. Lampmann,S. A. Duursma,J. H. J. Ruys Book 1984 Martinus Nijhoff Publishers,

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書目名稱CT Densitometry in Osteoporosis
副標(biāo)題The impact on manage
編輯L. E. H. Lampmann,S. A. Duursma,J. H. J. Ruys
視頻videohttp://file.papertrans.cn/221/220678/220678.mp4
叢書名稱Series in Radiology
圖書封面Titlebook: CT Densitometry in Osteoporosis; The impact on manage L. E. H. Lampmann,S. A. Duursma,J. H. J. Ruys Book 1984 Martinus Nijhoff Publishers,
描述In 1977 a Philips Tomoscan 200, second generation, whole body CT scanner was installed at the Department of Radiodiagnosis of the University Hospital of Utrecht (The Netherlands) and its new possibilities concerning the measurements of bone mineral content (BMC) had been considered. As a result of the close cooperation between the Clinical Research Group for Bone Metabolism and the Department of Radiodiagnosis of the University Hospital of Utrecht a new project was started. The aim of a pilot study was to investigate the application of CT scanning in BMC determination in comparison with existing parameters such as histovolumetric measurements in transiliac bone biopsy specimens, morphometric measurements in hand X-ray films and other methods. In 1979 a Philips Tomoscan 300, third generation CT scanner became available. With this new scanner many problems of the Tomoscan 200 seemed to be solved. An examination protocol was designed with a standardized method for CT mea- surements and a follow-up study was started. On account of the availability and the participation of a number of patients it became possible to realize this study. The results made it possible to draw conclusions con
出版日期Book 1984
關(guān)鍵詞computed tomography (CT); osteoporosis; Diagnostic Radiology; diabetes
版次1
doihttps://doi.org/10.1007/978-94-009-5672-8
isbn_ebook978-94-009-5672-8
copyrightMartinus Nijhoff Publishers, Boston 1984
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Bone Anatomy, Physiology and Pathology, consisting of concentric lamellar bone. Bone contains cells, collagen fibres, mucopolysaccharides, proteins, fat and minerals (mostly Ca. (OH). (PO.). = crystalline apatite). Four types of cells can be distinguished in bone: lining cells (flat cells along the surface of the bone), osteoblasts (whic
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Methods in CT Densitometry,nd an object to be scanned and a detector system. The detector system transmits the attenuation measurements to a computer which will reconstruct the image (note: attenuation = photo-electric absorption + compton scatter).
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Phantom Studies,vo situation as good as possible. An appropriate phantom was not available. A special purpose antropomorphic phantom was constructed on reqest (Scanpias Inc., Great Britain). It is composed according to the actual anatomical and physical status in an average human body transverse section in the regi
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Correlation between Mean CT Density Values in Different Vertebrae, neither in healthy people, nor in osteoporotic patients. Some authors (Cann and Genant, 1980) tend to the hypothesis that in the normal individual BMC determinations on each lumbar level may result in identical CT density values. This in contrast to the osteoporotic patient in whom CT density value
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