Abstract:

Objective  To explore the clinical value of post-processing techniques of multi-slice spiral CT(MSCT) in orbital fracture. Methods  Data of 65 patients with orbital fractures subjected to MSCT reformatted images and CT axial images were retrospectively reviewed. The patients were classified into 3 groups based on the utility of the advanced MSCT reformatted images: the grade A group ( substantial new information was obtained), the grade B group (improved visualization and understanding of the orbital fracture were obtained), and the grade C group (no added useful information was obtained). Results  There were 28 fractures (24 cases) in grade A group, 51 fractures (32 cases) in grade B group, and 106 fractures (42 cases) in grade C group. 106 fractures were shown by CT axial images, and 185 fractures by MSCT reformatted images. Fractures were located in the medial wall of the orbit in 49 cases, in the side wall of the orbit in 23 cases, in the superior wall of the orbit in 13 cases, in the inferior wall of the orbit in 21 cases, in the optic canal in 8 cases, and in the nasolacrimal duct in 1 case. Conclusion  MSCT reformatted images can clearly and multidirectionally reveal the whole osteoporosis structure of the orbital fracture and provide more useful information nor presented in CT axial images.

Key words: Orbital fracture； Tomography, X-ray computed