Computed tomography of the orbital lesions

Hong, S E; Suh, S J; Kim, S Y; Kim, H K

Abstract

The use of CT in investigation of orbital lesions was of value for the localization of the lesions as well asmaking the specific diagnosis. We advocated the combined use of transverse axial section and contrast enhancementin CT as a routine procedure often including coronal section in the diagnosis of orbital lesions because of itsusefulness and more precise three-dimensional imaging. The authors examined 68 patients wtih various ophthalmicproblems by using EMI-CT scanner-5005 from Oct. 1977 to Nov. 1979. Fifty one orbital lesions out of 68 CT scanswere analized by CT, angiography and operative findings and results were as follows; 1. Among 43 males and 25females, their age range was from 4 months to 66 years with the most frequent age group of first decade(17 cases;25%). 2. The distribution of the lesions was mucocele, pseudotumor, optic nerve atrophy, metastasis, lacrimalgland tumor, persistent hypertrophic primary vitreous, granulosa cell myoblastoma, hemanigioma in order with 13malignancies(25%). 3. It was difficult to differentiate pathological diagnosis of the lesions, but the characaterof the lesion was determined by its characteristic location, and its relationship to eyeball, optic nerve,extraocular muscles and bony orbit. 4. It was thought that more accurate diagosis of orbital lesions could be madeby development of CT scanner having fine matrix, short time exposure and thin slice in the future.