Application of volumetric tomography in dental imaging to assess periapical lesions

Celem podjętej pracy było zastosowanie tomografii CBCT w obrazowaniu stomatologicznym do oceny zmian okołowierzchołkowych jak również wykorzystanie funkcji diagnostycznych dostępnego oprogramowania. Zakres diagnostyczny pracy obejmował 41 przypadków zmian okołowierzchołkowych zębów różnych grup badanych ogółem dla 33 pacjentów. Pierwsza ocena zmian okołowierzchołkowych została dokonana w programie iCATVision. Następnie dokładne zaznaczenie pola powierzchni zmian zostało opracowane w programie Onis 2.4.The purpose of the work was to describe the application of the CBCT tomography in dental imaging, to evaluate periapical lesions as well as to present the use of diagnostic functions in the available software. Diagnostic scope presented in the paper included 41 cases of pariapical lesions in all sorts of the examined teeth groups total for 33 patients. The first assessment of periapical lesions was made in iCATVision. Then the precise selection of the surface area of lesions were drawn up in Onis 2.4

Studying the shape of solids of revolution with the use of optical coordinate metrology

The optical methods of coordinate measuring are a tool that have been more and more frequently used in biometrological applications, due to their advantages. The object of this paper is to set the accuracy of modelling solids of revolution whose shapes and measurements find their application in medical diagnostics with the use of three measurement systems employing laser and structured light. The carry out the studies, a coordinate measuring machine LK CMM with LC60Dx laser scanner, a coordinate measuring Romer Absolute Arm 7320SI with HP-L-20.8 laser scanner and an optical Scan 3D Qualify scanner were used. The use of coordinate technique to analyze the shape of the model solids allowed for the comparison of accuracy of optical methods with reference to standards digitally modelled based in measurements made by CMM Leitz PMM 12106. The most preferable contactless system to render the shape of solids of revolution is the LK CMM with LC60Dx laser scanner