Incidence of Enhancement of the Optic Nerve/Sheath Complex in Fat-Suppression Orbit MRI.
10.3348/jkrs.1995.32.4.541
- Author:
Dae Chul SUH
;
Choong Gon CHOI
;
Ho Kyu LEE
;
Kwon Ha YOON
- Publication Type:Original Article
- MeSH:
Arteriovenous Malformations;
Cavernous Sinus;
Cavernous Sinus Thrombosis;
Gadolinium DTPA;
Humans;
Incidence*;
Magnetic Resonance Imaging*;
Optic Neuritis;
Orbit*;
Retrospective Studies
- From:Journal of the Korean Radiological Society
1995;32(4):541-544
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To elucidate the incidence of Gd-DTPA enhancement of the optic nerve/sheath complex (ONC) in patients with various ophthalmopathies using fat-suppression MRI. MATERIALS AND METHODS: Orbit MRI with fat-suppression technique (ChemSat) was performed in 58 patients with normal and various orbital lesions. The fat-suppression MR was done with and without Gd-DTPA injection in all cases. MR findings were reviewed retrospectively in a blind fashion with respect to presence or absence of contrast enhancement of the O NC. RESULTS: Contrast enhancement of the ONC was seen in 86% (6/7) of cavernous sinus lesions, 80% (8/10) of intraconal lesions excluding the ONC, 57% (16/28) of ONC lesions, 38% (3/8) of ocular lesions, and 2% (1/55) of normal orbits. The ONC enhancement was the most common in optic nerve/sheath tumors (10/10), and pseudotumors (6/6), cavernous sinus dural arteriovenous malformations (3/3) and cavernous sinus thrombosis (2/2), and less frequently seen in optic neuritis (3/14). CONCLUSION: Enhancement of the ONC may be seen in lesions of the cavernous sinusand orbit other than optic nerve/sheath lesion.
