The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Traditional growing rod (TGR) provides a corrective moment for deformed segments to straighten the spine, whose clinical efficacy has proven positive and growth‐friendly. However, an insufficient understanding of orthopedic mechanisms can affect the development of clinical strategies. This research attempts to analyze the spine that has undergone four distraction operations: exploring the spinal orthopedic...
Background
Spatial positioning is the key function of a surgical navigation robot system, and accuracy is the most important performance index of such a system.
Methods
The kinematic parameters of a six degrees of freedom (DOF) robot arm were used to form the transformation from intraoperative fluoroscopy images to a robot's coordinate system without C‐arm calibration and to solve the redundant...
Noninvasive positive pressure ventilation (NPPV) has been widely used in the clinical and domestic therapy. Air leak is the unavoidable problem during NPPV. Undesirable leak may cause side effects on ventilation. In this paper, an experiment platform was established to study air leak in ventilation. The platform includes three parts: a ventilator control system, a lung model and a detection module...
We utilized a sulcus-based computational approach to investigate the relationship between the three-dimensional (3D) morphology of the central sulcus (CS) and age. The anterior and posterior walls of the CS were manually outlined using high-resolution magnetic resonance images of 295 right-handed healthy participants (age range: 18~94years). Surface reconstruction and parameterization methods were...
The aim of this in vitro study is to explore the correlations between quantitative ultrasound (QUS) parameters and micro-structure parameters of cancellous bone. Cube of swine cancellous bone were resort to progressively decalcification and subjected to QUS and micro computed tomography. Ethylene Diamine Tetraacetic Acid (EDTA) decalcification was used to remove calcium. SOS, an important QUS parameter,...
It is very valuable for early disease diagnosis to analyze cortical surface and sulcus morphology using neuroimaging techniques. There are some platforms that provide automatic segmentation and reconstruction of cortical surface based on MRI data. BrainVISA enables the shape analysis of the sulcal pattern as well as morphological measure of the cortex and has been widely used in many studies. However,...
Closed reduction and internal fixation with 3 hollow annulated screws is a common method for treating fractures of the femur neck. Parameters that directly influence the surgical effect include fracture face angle, screw distribution and positions. According to the results of mechanical experiments and QCT images, a finite element model of the proximal femur was established. Biomechanical theory was...
Close reduction and internal fixation with 3 hollow annulated screws is a common method for treating fractures of the femur neck. The parameters, for example fracture face angle, empty screw distribution and position, are important to the surgery. These parameters are influence on the surgical effect directly. According to the results of mechanical experiments and QCT (Quantitative computed tomography)...
Femoral cancellous bone has microcosmic trabecular structure and its element characteristics effect the gross mechanical property of the femur. Finding proper cellular configuration and its distribution will be of great importance for more effective biomechanical analysis of cancellous bone. A lot of microcosmic trabecular models with different structures were used to study the biomechanical performance...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.