Analysis of physiological pit in medial orbital wall with CT
LI Shan
Department of Radiology, Traditional Chinese Medicine Hospital of China Three Gorges University,
Yichang Hospital of Traditional Chinese Medicine, Yichang Hubei 443003, China
Abstract:Objective: To analyze CT findings of physiological pit in medial orbital wall. Methods: Twenty-one cases with physiological pit in medial orbital wall were included and classified according to the features of axial CT images. Related parameters were measured. Results: According to axial CT image features, the cases were divided into 3 categories: arc sunken pit(15 cases), angle sunken pit(4 cases) and irregular sunken pit(2 cases). Related parameters: ①Depth of the sunken pit: minimum depth 2.1 mm, maximum depth 6.4 mm, average depth (4.0±1.4) mm. ②Length of the sunken pit: minimum length 5.1 mm, maximum length 19.7 mm, average length (13.3±3.7) mm. ③Position of the apex of a sunken pit, on axial CT image: middle 1/3 of lamina was the most common, back 1/3 was the second, front 1/3 was the least; on coronal CT image: the upper half of lamina orbital was the most common, the lower half was the least. Conclusion: 2.6% of the people have physiological pit in the medial orbital wall. The understanding of this phenomenon can improve the identification ability of physiological sunken pit and fracture.
李 珊. 眼眶内侧壁生理性凹陷的CT分析[J]. 中国临床医学影像杂志, 2018, 29(7): 464-467.
LI Shan. Analysis of physiological pit in medial orbital wall with CT. JOURNAL OF CHINA MEDICAL IMAGING, 2018, 29(7): 464-467.