Cooper W C
Trans Am Ophthalmol Soc. 1985;83:546-609.
The various congenital and acquired conditions which alter orbital volume are reviewed. Previous investigative work to determine orbital capacity is summarized. Since these studies were confined to postmortem evaluations, the need for a technique to measure orbital volume in the living state is presented. A method for volume determination of the orbit and its contents by high-resolution axial tomography and quantitative digital image analysis is reported. This procedure has proven to be accurate (the discrepancy between direct and computed measurements ranged from 0.2% to 4%) and reproducible (greater than 98%). The application of this method to representative clinical problems is presented and discussed. The establishment of a diagnostic system versatile enough to expand the usefulness of computerized axial tomography and polytomography should add a new dimension to ophthalmic investigation and treatment.
本文综述了各种改变眼眶容积的先天性和后天性疾病。总结了以往确定眼眶容量的研究工作。由于这些研究仅限于尸体评估,因此提出了一种在活体状态下测量眼眶容积的技术需求。报告了一种通过高分辨率轴向断层扫描和定量数字图像分析来确定眼眶及其内容物体积的方法。该方法已被证明是准确的(直接测量值与计算测量值之间的差异范围为0.2%至4%)且可重复的(大于98%)。本文介绍并讨论了该方法在典型临床问题中的应用。建立一个足够通用的诊断系统以扩大计算机轴向断层扫描和多层断层扫描的用途,应为眼科研究和治疗增添新的维度。