正常受试者背部轮廓三维测量中光栅立体摄影的变异性

Variability in three-dimensional measurements of back contour with raster stereography in normal subjects.

作者信息

Thometz J G, Liu X C, Lyon R, Harris G F

机构信息

Department of Orthopaedic Surgery, Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee 53226, USA.

出版信息

J Pediatr Orthop. 2000 Jan-Feb;20(1):54-8.

PMID:10641689

Abstract

Forty normal children with a mean age of 9.1 years were investigated by using a Quantec Spinal Image System (QSIS). The QSIS uses computerized raster stereography technology to acquire three-dimensional measurements of back contour. Within a 95-percentile confidence interval (a) coronal-plane QSIS angles ranged from 0.05 to 2.36 degrees; (b) transverse-plane QSIS angles ranged from 0.03 to 1.96 degrees; and (c) sagittal-plane QSIS angles ranged from 36.8 to 44.8 degrees. Trunk-alignment deviation ranged from 3.51 to 7.45 mm within a 95-percentile confidence interval. An intraobserver standard deviation of +/-4.2 degrees was noted across all angular metrics. Normal ranges of QSIS-determined values for a population of 40 children without clinical evidence of pathology are reported.

摘要

使用Quantec脊柱影像系统（QSIS）对40名平均年龄为9.1岁的正常儿童进行了调查。QSIS采用计算机光栅立体摄影技术获取背部轮廓的三维测量数据。在95%置信区间内，（a）冠状面QSIS角度范围为0.05至2.36度；（b）横断面QSIS角度范围为0.03至1.96度；（c）矢状面QSIS角度范围为36.8至44.8度。在95%置信区间内，躯干对线偏差范围为3.51至7.45毫米。所有角度指标的观察者内标准差为±4.2度。报告了40名无病理临床证据儿童群体的QSIS测定值的正常范围。