Open AccessIndices of the volume of the bony orbit and its soft tissues ratio in health, and their role in the differential diagnosis of the different forms of thyroid ophthalmopathy
Author(s) -
Oleg Yur’yevich Yatsenko
Publication year - 2013
Publication title -
oftalʹmologičeskie vedomosti
Language(s) - English
Resource type - Journals
eISSN - 2412-5423
pISSN - 1998-7102
DOI - 10.17816/ov2013439-45
Subject(s) - orbit (dynamics) , soft tissue , medicine , differential diagnosis , orbital diseases , anatomy , thyroid , tomography , computed tomography , radiology , nuclear medicine , pathology , computed tomographic , engineering , aerospace engineering
Over the last several years, there has been is a keen interest in studying the normal anatomy of the bony orbit and of its soft-tissue content. However, publications on the different volumes of the normal bony orbit ratios as well as on those of its soft-tissue content in health and orbital diseases, are extremely rare and not comprehensive. In the present article, ratios of the bony orbit volume and of its soft-tissue content are calculated in health, and their role in diagnosis of different orbital diseases is defined. To study normal indices of the bony orbit and of its content, computed tomography images of 210 people (266 orbits) were investigated, as well as tomograms of 294 patients (559 orbits) with thyroid ophthalmopathy. In all patients computed tomography was performed according to a standard method with axial and frontal sections (section thickness 1.0 mm, slice spacing 1.0 mm). The result of the study is that ratios of the volume characteristics of the bony orbit volume and of its soft-tissue content play an important role in confirming individual asymmetry of orbital structures as well as in differential diagnosis in different orbital diseases.