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以羊腰椎体骨煅烧后的灰重密度为标准,比较能谱CT与双能X线骨密度仪(DXA)测量椎体骨密度(BMD)的准确性,探讨能谱CT对BMD的测量价值。 方法:选取36节新鲜市售羊腰椎椎体作为研究对象,清除椎体周围软组织及其附件后,分别采用能谱CT与DXA测量BMD,然后煅烧椎体得到灰重密度。将两种方法测量所得BMD值与灰重密度值进行比较,同时分析两种方法测量所得BMD值与灰重密度值的相关性;最后将能谱CT...
外源性脂肪对DXA测量骨密度结果的影响
外源性脂肪 DXA测量骨密度
2009/6/25
目的:观察外源性脂肪对DXA(Hologic QDR4500A型)测量腰椎模型骨密度(bone mineral density,BMD)结果的影响。方法:准备不同厚度的猪脂肪(猪油和炼油各2块,5 cm和10 cm厚),放置在腰椎模型上,测量放置前后的BMD。结果:放置不同厚度猪油后只有L1的BMD下降有统计学意义(P<0.05);放置5 cm厚炼油时BMD,骨量(BMC),骨面积(BA)大都显著...
Correlation between QUS of Phalanx and DXA in Assessment of Bone Structure of Postmenopausal Women
QUS of phalanx DXA BMD Osteoporosis
2010/2/1
This study planned for finding the agreement DXA and quantitative ultrasound (QUS) of phalanx in osteoporosis diagnosis and cut off point of QUS for osteoporosis diagnosis in postmenopausal women. In ...
DXL of calcaneus is a portable method for BMD. This study determined a cut off point for DXL in osteoporosis diagnosis. In 510 healthy postmenopausal women, BMD of axial regions with DXA (DPX-MD, GE,L...