Articles from rubric: «Diagnostic systems»
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2020 № 4 Radiological Images in the Construction of Hybrid Intelligent System
So far, the concept of image row or tuples in the development of intelligent systems has been discussed in relation to
the role of phenotypic (external) manifestations of diseases in diagnostics. This study introduces the idea of neuroimaging tuples as a tool to make a prognosis of the course of chronic cerebral ischemia. The phenomenon of leukoaraiosis is analyzed as a radiological feature of chronic brain ischemia and a predictor of stroke. Image tuples are formed from the results of computed tomography, computed tomography angiography, magnetic resonance imaging, of 85 patients with chronic cerebral ischemia. Native computed tomography images were processed with adaptive filtering methods. Computed tomography angiography results were processed through a vesselness filter that allows development of 3D reconstructions of vasculature in leukoaraiosis areas. The problem of fuzzy images, the principles of comparative analysis of images and the possibility of using confidence factors in the image tuples are discussed in the article. A scheme of a hybrid intelligent system that combines traditional logic-linguistic rules and images based on primary information and reconstruction of the original DICOM images in the knowledge base was developed. The sphere of the application is stroke risk prediction using an intelligent system. -
2018 № 3 Development of the approach for improvements method of active circles
An approach is developed for improving the method of active contours for isolating the contour of the object under study on a raster image. This approach consists in the initial use of the morphological method of active contours for the correct construction of 2D models of bone systems on raster images, and then in the refinement of the obtained model using the algorithm proposed in this paper. For the correct isolation of the Th6 vertebrae cones in the framework of the morphological method of active contours, the optimal numerical values of parameters were selected using numerical experiments.
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2017 № 3 From PACS to teleradiology
This article is about the current situation of the distribution and exchange of medical images. Today PACS is familiar to medical facilities and it is widely used system in radiology departments, but the “teleradiology” term still has difficulties with interpretation. When digital medical images are printing on a film and then transfer to other specialists, this way of exchange becomes more and more expensive and inefficient. That’s why the problem of acquisition, dis- tribution and getting access to the results of the diagnostic studies still actual. Another problem is the lack of qualified radiologists in the regions of Russia, due to the uneven population density; competent specialists are concentrated in regional centers. Therefore performing of urgent remote consultation is an actual problem too. In this article have been defined perspectives of advancement of the teleradiological systems, that began to appear due to PACS implementa- tion in radiology departments. The purpose of this scientific research is to develop the methods of teleradiology systems organization for consultations using PACS and telemedicine networks created in the regions. Factors influencing the quality of teleradiology consultations were discussed in article. Prerequisites for the development and implementation of such socially important systems, as a regional teleradiology system were defined