- MeSH
- autologní transplantace MeSH
- dítě MeSH
- fraktury zubů terapie MeSH
- implantace zubů MeSH
- lidé MeSH
- ortodoncie korekční metody MeSH
- ortodontické dráty využití MeSH
- řezáky zranění MeSH
- výsledek terapie MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- Publikační typ
- kazuistiky MeSH
This paper is focused on the virtual collaborative consultation system which is intended for support of 3D geometrical modelling applications in the field of clinical human medicine. The system allows uploading the CT/MR data and 3D tissue geometry models (prepared in advance). The data define a 3D scene, which allows for viewing of the data and consulting them between technicians and physicians over the medium of computer network. The system is conceived as a three layer client-server architecture. For communication between the server and a client, the HTTPS protocol is used. Test results in Czech republic and the world-wide tests as well confirm, that the system is practically applicable and beneficial.
- MeSH
- diagnostické zobrazování metody MeSH
- kongresy jako téma MeSH
- lidé MeSH
- počítačová grafika MeSH
- počítačová simulace MeSH
- protézy a implantáty MeSH
- technologie trendy MeSH
- telemedicína trendy MeSH
- teoretické modely MeSH
- uživatelské rozhraní počítače MeSH
- zobrazování trojrozměrné metody MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
Článek se věnuje problematice síťového konzultačního kolaborativního systému, který je určen pro praktickou podporu aplikací 3D geometrické modelování v humánní medicíně. Tento systém umožňuje nahrát CT/MR obrazová diagnostická data ve standardním formátu DICOM a připravené 3D modely tkání. Nad touto 3D scénou je možné prostřednictvím počítačové sítě realizovat vzdálené 3D konzultace mezi techniky a lékaři, teoreticky v rámci celého světa. Systém je koncipován jako třívrstvá klient-server architektura. Komunikace mezi klienty a serverem probíhá prostřednictvím protokolu HTTPS.
This article focuses on the problems of consultation virtual collaborative environment, which is designed to support 3D medical applications. This system allows loading CT/MR data from PACS system, segmentation and 3D models of tissues. It allows distant 3D consultations of the data between technicians and surgeons. System is designed as three-layer client-server architecture. Communication between clients and server is done via HTTP/HTTPS protocol. Results and tests have confirmed, that today's standard network latency and dataflow do not affect the usability of our system.
Computed tomography (CT) is an effective diagnostic modality for three-dimensional imaging of bone structures, including the geometry of their defects. The aim of the study was to create and optimize 3D geometrical and real plastic models of the distal femoral component of the knee with joint surface defects. Input data included CT images of stifle joints in twenty miniature pigs with iatrogenic osteochondrosis-like lesions in medial femoral condyle of the left knee. The animals were examined eight and sixteen weeks after surgery. Philips MX 8000 MX and View workstation were used for scanning parallel plane cross section slices and Cartesian discrete volume creation. On the average, 100 slices were performed in each stifle joint. Slice matrices size was 512 x 512 with slice thickness of 1 mm. Pixel (voxel) size in the slice plane was 0.5 mm (with average accuracy of +/-0.5 mm and typical volume size 512 x 512 x 100 voxels). Three-dimensional processing of CT data and 3D geometrical modelling, using interactive computer graphic system MediTools formerly developed here, consisted of tissue segmentation (raster based method combination and 5 % of manual correction), vectorization by the marching-cubes method, smoothing and decimation. Stifle- joint CT images of three individuals of different body size (small, medium and large) were selected to make the real plastic models of their distal femurs from plaster composite using rapid prototyping technology of Zcorporation. Accuracy of the modeling was +/- 0.5 mm. The real plastic models of distal femurs can be used as a template for developing custom made press and fit scaffold implants seeded with mesenchymal stem cells that might be subsequently implanted into iatrogenic joint surface defects for articular cartilage-repair enhancement.
- MeSH
- design s pomocí počítače MeSH
- femur radiografie MeSH
- kolenní kloub u koně, psa radiografie MeSH
- kultivované buňky MeSH
- mezenchymální kmenové buňky * MeSH
- miniaturní prasata MeSH
- modely anatomické * MeSH
- modely nemocí na zvířatech MeSH
- osteochondritida radiografie MeSH
- počítačová rentgenová tomografie * MeSH
- prasata MeSH
- protézy - design MeSH
- rentgenový obraz - interpretace počítačová MeSH
- tkáňové inženýrství * MeSH
- tkáňové podpůrné struktury * MeSH
- zobrazování trojrozměrné * MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
This paper deals with the new concept of network based virtual collaborative environment to support clinical applications of 3D models of human tissues, created from CT/MR data. It is a topic lying between 3D tissue modeling and PACS systems. Designed system allows clinical realizations of 3D applications as a service to clinical workplaces, provided by specialized 3D laboratory, even over great distances. Problem lies within the need of doing necessary consultations, corrections and verifications distantly. This is solved by our system in the form of virtual collaborative environment. This system is built upon three-layer client-server architecture. Our application is focused on 3D tissue modeling. Generally it can be used as a basis for other similar applications.
