Measurement of the globe proptosis by CT and its accuracy in patients with unilateral orbital fracture.
- Author:
Zhi-Yong ZHANG
1
;
Yi ZHANG
;
Yang HE
;
Jin-Gang AN
Author Information
- Publication Type:Journal Article
- MeSH: Adolescent; Adult; Exophthalmos; diagnostic imaging; Humans; Middle Aged; Orbit; diagnostic imaging; Orbital Fractures; diagnostic imaging; Tomography, X-Ray Computed; methods; Young Adult
- From: Chinese Journal of Plastic Surgery 2009;25(3):169-172
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo evaluate the accuracy of measurement of the globe proptosis by CT in patients with unilateral orbital fracture.
METHODS25 patients with unilateral orbital fracture were included. CT was performed before and after operation. The globe proptosis on the unaffected side was measured before and after operation by using Hertel exophthalmometer (HE), CT images with orbital lateral rim (OLR) and the optic nerve foramen (ONF) as reference points. The accuracy was evaluated comparably by statistical analyses.
RESULTSThe preoperative and postoperative average globe proptosis were (13.9 +/- 3.1) mm and (12.5 +/- 2.2) mm in HE group, (16.1 +/- 2.6) mm and (15.7 +/- 2.3) mm in the OLR group, (45.3 +/- 4.8) mm and (46 +/- 3.9) mm in the ONF group, showing a significant difference between the pre-and post-operative results in HE group, but not in OLR and ONF groups.
CONCLUSIONSCT measurement with the orbital lateral rim as reference point is more reliable than Hertel exophthalmometer measurement for globe proptosis.
