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.
Efficient visualization of vascular structures is essential for diagnosis, therapy planning and medical education. In this paper, we present an approach which is based on a prior binary segmentation result, point extraction and Poisson surface reconstruction. The proposed method has been applied to liver vessel trees and aortic vessel trees. The experimental results show that it can effectively achieve...
A surface electromyography (EMG) based muscle activities imaging (sEMG-MAI) approach has been developed using the bioelectrical source reconstruction approach to minimally invasively reconstruct muscle activities in the three dimensional (3D) space of the periurethral muscles (including urethral and anal sphincter, and the surrounding muscles) of the female pelvic floor from multi-channel intra-anal...
In this paper, we propose a computer simulated biopsy marking (CSBM) system for gastroscopy physicians. The purpose of the study is to solve two problems: how to mark suspicious areas for follow-ups without hurting stomach, and how to cut down time spent on gastroscopy. By constructing a three-dimensional (3D) virtual stomach model and using a tracking device, the position of gastroscope is shown...
Gibbs Random Fields (GRF) is a popular prior model widely used in Bayesian segmentation due to its excellent property in describing the spatial information of image. But until now, the classical approaches, describing the Markovian property of single-scale instead that of multi-scale, may come across some difficulties such as expensive computation and unsupervised parameter estimation of GRF. Thus,...
In the cutting mapping research, B+ tree algorithm was used based on the idea of edge detection in cutting mapping and drawing in advance. This algorithm excavates geometry information of object outline and makes the triangle slice choice according to the crossing information between dot and line, and present cutting state, using border table and vertex table to check all close contour, using angle...
Acoustic rhinometry and acoustic pharyngometry (AR/P) can quantify upper airway condition of air draft by drawing a graph plotting the nasal cavity and pharyngeal cavity cross-sectional area. Based on CT medical images of volunteers, a 3-dimensional finite element model of upper respiratory tract was reconstructed by the method of surface rendering. The veracity of the model was valued by contrasting...
Intracranial aneurysms are pathological dilatations of the arterial wall. Hemodynamic factors like the wall shear stress play an important role in the formation, growth and rupture of intracranial aneurysms; however, their natural growing history is not well understood. In this paper, we created 3-D models of intracranial aneurysms based on patient-specific 3DRA images and performed hemodynamic numerical...
The medical image visualization can help the doctor easy to diagnose, and the better quality can help doctor much more. The reflectance model is the key factor to make the quality better. Be enslaved to the computing power of CPU and GPU, some complicated reflectance models have not been used in medical visualization, the simple reflectance model-Phong model been used prevalently. With the growing...
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.