利用QDR-4500W型DEXA机内人体ROI软件做动物骨密度测定  

Determination of animal bone mineral density by means of human ROI software of QDR-4500W DEXA

作　　者：温孝恒[1] 徐澄[1] 胡玮[1] 

机构地区：[1]天津医院

出　　处：《中国骨质疏松杂志》1998年第3期24-25,共2页Chinese Journal of Osteoporosis

摘　　要：目的为了解决ＱＤＲ－４５００Ｗ型ＤＥＸＡ无测定动物骨密度软件问题。方法利用该机内测定人腰椎兴趣区（ＲＯＩ）骨密度软件成功地测定了大白鼠骨密度。结果骨骼影像清晰，头部、腰椎、股骨、离体胫骨和椎骨的ａｒｅａ，ＢＭＣ，ＢＭＤ值分别报告。讨论（１）我们测试报告与ＱＤＲ－２０００型ＤＥＸＡ作的动物骨密度报告相似，但我们以更接近骨外形的ＲＯＩ标示提高精确度；（２）应使各鼠体位和鼠骨摆法一致；（３）本法扫描长度不足使大鼠成舒展位，ＲＯＩ边界不能呈现完全与骨影吻合的任意形状，有待改进。In order to eliminate the problem that no software for animal bone mineral density is provided by the QDR-4500W DEXA,we successfully determined the rat BMD by use of human lumbar vertebrae ROI software provided by the equipment manufacturer.Results:Skeleton imaging is clear.Area,BMC and BMD of the rat head,lumbar vertebrae,femur and in vitro tibia and vertebrae can be obtained separately.Discussion:1.0ur results agree with that obtained by QDR-2000 DEXA,but we can improve the results by careful selection of ROI to match the bone shape.2.The positioning of each rat and bone should be consistent 3.The imaging area is 20×1.2 cm^2 with a maximum of seven ROI and overlap is allowed.4.Since the scan length is limited,and boundaries of ROI cannot be in the arbitrary shape to match the bone imaging,further improvement is required.

关 键 词：骨密度 DEXA 腰椎 人体 吻合 股骨 胫骨 体位 BMD 离体 

分 类 号：R681[医药卫生—骨科学] R683[医药卫生—外科学]