Shin Kang-Jae, Gil Young-Chun, Lee Shin-Hyo, Kim Jeong-Nam, Yoo Ja-Young, Kim Soon-Heum, Choi Hyun-Gon, Shin Hyun Jin, Koh Ki-Seok, Song Wu-Chul
a Department of Anatomy , Research Institute of Medical Science, Konkuk University School of Medicine , Seoul , Republic of Korea.
b Department of Biomedical Laboratory , Masan University , Masan , Republic of Korea.
Semin Ophthalmol. 2017;32(5):575-581. doi: 10.3109/08820538.2015.1131837. Epub 2016 Jul 1.
The aim of the present study was to assess normal eyeball protrusion from the orbital rim using two- and three-dimensional images and demonstrate the better suitability of CT images for assessment of exophthalmos.
The facial computed tomographic (CT) images of Korean adults were acquired in sagittal and transverse views. The CT images were used in reconstructing three-dimensional volume of faces using computer software. The protrusion distances from orbital rims and the diameters of eyeballs were measured in the two views of the CT image and three-dimensional volume of the face. Relative exophthalmometry was calculated by the difference in protrusion distance between the right and left sides.
The eyeball protrusion was 4.9 and 12.5 mm in sagittal and transverse views, respectively. The protrusion distances were 2.9 mm in the three-dimensional volume of face. There were no significant differences between right and left sides in the degree of protrusion, and the difference was within 2 mm in more than 90% of the subjects.
The results of the present study will provide reliable criteria for precise diagnosis and postoperative monitoring using CT imaging of diseases such as thyroid-associated ophthalmopathy and orbital tumors.
本研究旨在使用二维和三维图像评估眼眶边缘的正常眼球突出度，并证明CT图像在评估眼球突出方面具有更好的适用性。
获取韩国成年人的面部计算机断层扫描（CT）图像的矢状面和横断面视图。使用计算机软件将CT图像用于重建面部的三维体积。在CT图像的两个视图以及面部的三维体积中测量眼眶边缘的突出距离和眼球直径。通过左右两侧突出距离的差异计算相对眼球突出度。
矢状面和横断面视图中的眼球突出度分别为4.9毫米和12.5毫米。面部三维体积中的突出距离为2.9毫米。两侧的突出程度无显著差异，超过90%的受试者差异在2毫米以内。
本研究结果将为使用CT成像精确诊断和术后监测甲状腺相关眼病和眼眶肿瘤等疾病提供可靠标准。
