Wyniki wyszukiwania - BazTech

1

On problem of Rossby and Pointcare atmospheric waves separation and spectra

Karpov I., Leble S.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

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2017

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Vol. 21, No 2

97--108

EN

We propose a new inverse problem formulation based on the hydrodynamics consideration of a gas/water fluid that results in planetary waves diagnostics. We analyze such a possibility beginning from a simplest version of geophysical hydrodynamics, written in the b-plane model. The problem of diagnostics is solved approximately after expansion with respect to the transverse basis functions applying projecting to Rossby and Poincare waves in each transverse subspace that contains its superposition. The corresponding discrete version of the operators is built to be applied to the observation data.

2

On reflection and refraction of plane electromagnetic waves at a conducting matter surface

Leble S., Vereshchagina S.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

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2016

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Vol. 20, No 2

207--217

EN

A general problem of monochrome plane electromagnetic wave reflection and refraction at the interface between the conducting medium and the dielectric is formulated and solved by symbolic computation for given incident wave polarization. The conductivity account via the Ohm law directly in the Maxwell equation leads to a complex wavenumber and hence complex amplitudes of the reflected and refracted waves. Atomic absorption is taken into account via the imaginary part of permittivity. The general formula for the time-averaged Pointing vector in the conducting media as a function of the medium parameters and the incident angle is derived and used for the refraction angle definition. The result is compared with textbooks and recent publications. The dependence of intensity as a function of the angle to the interface is determined also via the Pointing vector as a function of the incident wave and medium parameters.

3

Overview of available open source PACS frameworks

Wideł S., Spinczyk D.

Studia Informatica

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2016

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Vol. 37, nr 3A

21--30

EN

The progress of medical services requires the developing of computer science tools that are essential to generate improvement in the existing scientific disciplines within the healthcare field. The article presents an overview of the available open source project for Picture Archiving and Communication Server (PACS) taking into account popular criteria for software evaluation.

PL

Rozwój usług medycznych rodzi potrzebę doskonalenia narzędzi informatycznych, które są niezbędne do generacji postępu w istniejących dyscyplinach naukowych w zakresie ochrony zdrowia. Artykuł przedstawia przegląd dostępnych systemów archiwizacji obrazów medycznych z otwartym kodem źródłowym, uwzględniając stosowane w praktyce kryteria ewaluacji oprogramowania.

4

Medical Expertise Ordering System - MEDEOS

Bogusławski K.

Measurement Automation Monitoring

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2016

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Vol. 62, No. 12

402--405

EN

This article is about telemedicine solutions used in various medical specialties. In general, the functions are described in exemplary telemedicine applications in radiology, cardiology, pathology and dermatology. MEDEOS has been described as a system for exchanging the image data between different hospital units. This article briefly outlines the issues related to the problem with interface for the exchange of medical data and describes the elements of the System and its’ basic assumptions. It also presents the security aspects of data exchange in the System.

5

Wykorzystanie urządzeń mobilnych do prezentacji medycznych danych obrazowych na przykładzie przeglądarki danych DICOM

Socha M., Pielka K., Gawędzki W., Turcza P.

Przegląd Elektrotechniczny

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2015

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R. 91, nr 5

64-67

PL

Nowoczesne urządzenia mobilne, takie jak tablet czy smartfon, dysponują możliwościami graficznymi oraz mocą obliczeniową pozwalającą na ich różnorakie wykorzystanie w praktyce klinicznej. W niniejszej pracy, na przykładzie mobilnej przeglądarki danych medycznych DICOM, omówiono możliwości technologiczne tych urządzeń oraz sposób ich wykorzystania do wizualizacji medycznych danych obrazowych. Zaprojektowana przeglądarka działa pod kontrolą sytemu Android i współpracuje ze szpitalnym systemem archiwizacji danych PACS.

EN

Modern mobile devices including tablets and smartphones have enough graphics and computing power to enable their successful usage in clinical practice. In this paper technological capabilities of such devices are examined and possibilities of their application for medical data visualization is discussed based on implementation details of mobile DICOM browser, which runs on Android and supports PACS the hospital archiving system.

6

Design of WDM Transmission System for Medical Data Exchange

Cybulski R., Perlicki K.

Journal of Telecommunications and Information Technology

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2014

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nr 2

29--34

EN

This paper describes design of the Wavelength Division Multiplexing (WDM) transmission system using Alien Wavelength channels for medical data exchange. Main purpose of such system is to develop variety of services for medical cases diagnostics in order to comply with modern standards in telemedicine. Those standards refer to photo or video data transmission produced by diagnostic devices used in radiological centers together with text data concerning medical case analysis and patient data. These features are delivered by Picture Archiving and Communication System (PACS). PACS describes intra-hospital network organization, which applies to constructing system data from raw graphical data and text information according to Digital Imaging and Communica tions in Medicine (DICOM) version 3.0 standard. This standard is used by authors to evaluate necessary bit rate con- cerning all types of services delivered by PACS and cumulative throughput of link connections between hospitals and databases. Organization of this connections in metropolitan WDM system using advantages of Alien Wavelength technique is this article the main goal. Difference between configurable and non-configurable 10 Gigabit Small Form Factor Pluggable (XFP) end devices for AlienWavelength channels are analyzed and compared with the standard approach using transponder cards.

7

The possibilities of using single-board computers for medical data transmission security

Schindler V., Roček A.

Przegląd Elektrotechniczny

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2013

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R. 89, nr 6

56--60

EN

An aim of the MeDiMed project is usage of current information and medical technology possibilities for the quality of medical surgery and medical care enhance, and improvement of conditions for research and medical students’ tuition. Current communication technologies level allows expert centers establishing, which provide sophisticated services in radiology, nuclear medicine, etc. In the future, connection of other healthcare facilities is expected, especially outside of Brno hospitals, smaller healthcare organizations and individual offices. Smaller institutions usually do not have a suitable network termination element for the IPSEC tunnel and the connection is usually solved by software on all workstations used for communication with MeDiMed. This solution is sometimes difficult to manage and requires local user response. This article shows an option of shifting network connection configuration from the client station to an external device that will be much easier for central management.

PL

W artykule przedstawiono możliwości wykorzystania współczesnej technologii informatycznej w przychodniach medycznych i jako pomoc w nauczaniu studentów. Przedstawiono możliwości przeniesienia połączeń sieciowych ze stacji klienta na urządzenia mobilne.

8

Aplikacja do wizualizacji danych DICOM z komunikacją z serwerem PACS

Kozakiewicz P., Piątek A., Socha M.

Pomiary Automatyka Kontrola

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2012

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R. 58, nr 4

319-322

PL

W pracy zaprezentowano aplikację do przeglądania danych medycznych, umożliwiającą współpracę ze szpitalnymi systemami informatycznymi PACS. Omówiono użyte narzędzia informatyczne, sposób konfiguracji serwera PACS oraz metody komunikacji i wymiany informacji w architekturze klient-serwer. Zaprezentowana międzyplatformowa aplikacja integruje rozbudowane metody dostępu do danych medycznych zapisanych w formacie DICOM, z zaawansowanymi możliwościami wizualizacji danych.

EN

This paper describes the results of creating a DICOM 2D/3D viewer compatible with the PACS server. "Dicom Viewer" is application for primary medical image processing in DICOM format shown in Fig. 1. It is equipped with most common tools for manipulation of DICOM images. Additional options are: display of patient list from DICOMDIR, open and save medical images in DICOM format, measurements and annotations, displaying DICOM attributes of selected image, brightness/contrast control, convert DICOM images to the most common picture formats. The main advantage is the possibility of communication with PACS which provides economical storage of, and convenient access to, images from multiple modalities. It allows the viewer to communicate with any PACS functioning in a hospital and get access to images closely-held on a server. This application displays studies from many modalities with the wide range of 3D rendering methods. As shown in Figs. 3-4, the main methods used for this are: 3D MIP (Maximum Intensity Projection), 3D Volume Rendering, 3D Surface Rendering and MPR (multiplanar reconstruction), a term used in medical imaging to refer to the reconstruction of images in the coronal and sagittal planes in conjunction with the original axial dataset. The same as 3D, there is ability to read and display 2D DICOM files (mono-frame, multi-frames) from different kinds of storages: Server, USB, CD/DVD (DICOMDIR support). The developed computer system is equipped with an interactive user interface (Fig. 2) and tools allowing for manipulation of the displayed data.

9

Przegląd metod bezstratnej kompresji obrazów medycznych

Starosolski R.

Studia Informatica

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2004

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Vol. 25, nr 2

49-66

PL

Niniejszy artykuł zawiera zwarty przegląd algorytmów z zakresu bezstratnej kompresji statycznych obrazów medycznych. Uwzględniono zarówno agorytmy, które uznawane są za standardy w medycznych systemach składowania i transmisji obrazów, jak również inne algorytmy praktycznie stosowane do kompresji takich danych. Przedstawiono również ogólną charakterystykę klas obrazów medycznych, wyróżniając te cechy omawianych klas obrazów, które są istotne przy konstrukcji lub wyborze algorytmu kompresji obrazów należących do tych klas.

EN

In this paper we present a brief overview of lossless medical image compression algorithms. We overview both algorithms that arę considered to be stan-dards in medical image transmitting and archiving systems and other algorithms used for compressing medical images. We also generally describe main classes of medical images, distinguishing features that arę crucial in development and selection of algo-rithms appropriate for compressing images belonging to those classes.

10

Lublin PACS – 2D imaging technology at department of radiology

Jezierska E., Siczek M., Laszewski M., Stegieński R, Mikolajczak P.

Journal of Medical Informatics & Technologies

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2000

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Vol. 1

IT 49--54

EN

One of the motives for putting in a picture archiving and communication system (PACS) is to improve efficiency and hence enhance the competitive strength of the radiology department. Department of Radiological Diagnostic at Lublin Count Hospital has been developing a hospital archiving and communication system since 1997. A personal computer-based environment was implemented to reduce costs (only $800 for each view station) and take advantage of distributed system technique. One of the critical points of a full PACS is the accessibility of images outside the radiology department. Image viewer is an attempt to solve this problem by using the ubiquitous PC as a PACS terminal. By designing an appropriate tool for displaying and manipulating medical images and linking them to existing WWW browsers, it is possible to use the existing Web for communicating and remote consultations of medical images.