NGHIÊN CỨU ĐẶC ĐIỂM GIẢI PHẪU BÌNH THƯỜNG HỐC MẮT Ở NGƯỜI VIỆT NAM TRƯỞNG THÀNH TRÊN CỘNG HƯỞNG TỪ

Abstract

Objective: To determine the normal size of some orbital components and related factors in Vietnamese adults on magnetic resonance imaging. Subjects and Methods: A retrospective, cross-sectional study on 238 orbital MRIs of Vietnamese people over 18 years old who were indicated for brain MRI without or with medication, MPRAGE (T1W-3D) pulse sequence imaging without or with medication at Cho Ray Hospital from January 2024 to September 2025. Results - Conclusion: In our study, we recorded the size of the parameters on T1W pulse: Medial rectus muscle: 4.0 ± 0.4 mm, Lateral rectus muscle: 5 ± 0.4 mm, superior muscle group: 4.4 ± 0.4 mm, inferior rectus muscle: 4.8 ± 0.4 mm, superior ophthalmic vein diameter 1.8 ± 0.4 mm, optic nerve diameter 3.9 ± 0.4 mm, anterior-posterior diameter of globe: 23.5 ± 1.1 mm, horizontal diameter of globe: 23.6 ± 1.0 mm. Results of the dimensions of the parameters on the fat-suppressed T1W pulse: Medial rectus muscle:4.0 ± 0.4 mm, lateral rectus muscle: 3.2 ± 0.4 mm, superior muscle group: 4.0 ± 0.5 mm, inferior rectus muscle: 4.8 ± 0.5 mm, superior ophthalmic vein diameter: 2.0 ± 0.4 mm, optic nerve diameter: 3.9 ± 0.3 mm, anterior-posterior diameter of globe: 23.6 ± 1.1 mm, horizontal diameter of globe: 23.6 ± 0.9 mm. In our study, we found a statistically significant difference in the measurements of the medial rectus muscle, lateral rectus muscle, superior muscle group, and optic nerve diameter between men and women on the fat-suppressed T1W pulse MRI. There were statistically significant differences in lateral rectus muscle measurements, anterior-posterior globe diameter, and transverse globe diameter between age groups and in medial rectus muscle measurements, lateral rectus muscle measurements, superior muscle groups, and optic nerve diameter between men and women on T1W-weighted MRI.