正常成人眼外肌的CT测量  

Measurement of Extraocular Muscles in Normal Adults

作　　者：杨子权[1] 祁吉[2] 张文波 王晖[2] 

机构地区：[1]天津市宁河县医院放射科,宁河县301500 [2]天津医科大学第一中心医院放射科,天津市300192

出　　处：《中国医学影像学杂志》2000年第3期181-182,共2页Chinese Journal of Medical Imaging

摘　　要：目的：用 ＣＴ测量成人眼外肌正常解剖径线。材料与方法：分别测量 １００例和 ８０例冠状和横轴 ＣＴ扫描双眼内、外、上、下直肌及上斜肌横径和高径。对用两种方法所测数值进行统计学分析和比较。结果：正常成人六条眼外肌横径和高径平均值为：内直肌４±０．７ｍｍ、１０．７±１．０ｍｍ；外直肌３．７±１．０ｍｍ、１０．０±１．０ｍｍ；上直肌９．６±１．０ｍｍ、３．９±０．９ｍｍ；下直肌８．８±１．０ｍｍ、４．４±０．８ｍｍ；上斜肌２．５±０．４ｍｍ、５．５±０．８ｍｍ。下斜肌高径２．６±０．４ｍｍ。视神经最大横径 ５．６± ０．８ｍｍ。眼眶外侧壁与矢状面夹角 ４７．５±４．８°。结论： ＣＴ扫描对眼外肌的测量准确、全面且直观。横轴 ＣＴ对眼外直肌横径的测量较为准确。Purpose: To measure the size of extraocular muscles in normal Chinese abults. Materials and methods: The transverse diameter and height of extraocular muscles of both eyes were measured in 100 cases with coronal and 80 cases with axial CT scans. The data were analyzed statistically. Results: The mean transverse diamerter and height of 6 extraocular muscles were: medial rectus muscle 4. 0 ± 0. 7mm, 10. 70 ± 1.0mm; lateral rectus muscle 3. 7 ± 1.0mm, 10. 0 ± 1. 0mm; supperior rectus muscle: 9. 6 ± 1. 0mm, 3. 9 ± 0.9mm; inferior rectus muscle 8. 8 ± 1.0mm, 4. 4 ± 0. 8mm; supperior obliquus muscle 2. 5 ± 0. 4mm, 5. 5 ± 0. 8mm; the height of inferior obique muscle was 2. 6 ± 0. 4mm. The diameter of optical nerve 5. 6 ± 0. 8mm. The angel between lateral wall and sagittal midline was 47. 5± 4. 8°. Conclusions: The size of extraocular muscles can be accurately measured with CT scan. Axial CT is more accurate for measuring the transverse diameter of the extraocular muscles.

关 键 词：眼外肌 正常值 CT 测量 

分 类 号：R816.97[医药卫生—放射医学]