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Background Basilar invagination (BI) combined with atlantoaxial dislocation (AAD) leads to foramen magnum stenosis and medullary spinal cord compression, causing nerve dysfunction. The purpose of the surgery is to remove the bony compression at brainstem ventral side and fix the unstable spinal segment and make it fused stably. Occipital cervical internal fixation system that simultaneously reduces...
Quantification of the relation between passive iris deformation and pressure differences between the anterior and posterior chamber is necessary to diagnose primary angle closure glaucoma. We devised the animal experiment to simulate the total pupil-blocking. We accomplished the experiments using isolated rabbit irises without destroying orbicular structure. 2D image of the iris was screened when...
To develop a method to monitor the intraocular pressure (IOP) of the anterior chamber in vivo in normal rabbits, to observe the value of the normal IOP, and to detect the distribution regularity in the 24 hours of normal rabbits. Normal IOP was monitored in 15 New Zealand white rabbit eyes. The measurements of IOP of all the experimental rabbits were by Millar transducer which was embedded in the...
We designed an experimental system based on stereo vision in order to analyze quantificational biomechanical properties of iris tissue without destroying the structure and function of iris in this paper. This experimental system, which was designed and improved upon the primary experimental device, consists of three vidicons assembled with tripod, a circular desk scaled from one degree to 360 degrees,...
Three-dimensional visualization is opening new worlds for more precise diagnosis and higher-quality treatment. 3D reconstruction from medical images is widely used in diagnosis and medical research. This paper focuses on 3D surface reconstruction of the pelvis from CT images on a personal computer. We measure and analyze large numbers of interrelated parameters in order to help doctor in diagnosis,...
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