Calibration of the metrological characteristics of photoplethysmographic multispectral device for diagnosis the peripheral blood circulation

Abstract

This paper presents firstly-engineered photoplethysmographic multispectral device for diagnosis the peripheral blood circulation. The calculation of the main errors as: primary converter error, methodical error of measurement, setting of optical-electronic sensor error was carried out. Moreover the assessment of reliability of diagnosis the engineered device was conducted. Streszczenie. Artykuł prezentuje pierwsze rozwiązanie wielospektralnego urządzenia fotopletyzmograficzego do diagnostyki obwodowego przepływu krwi. Przeprowadzono obliczenia głównych błędów: podstawowego błędu przetwarzania, błędu metodyki pomiaru, ustalonego błędu przetwornika optoelektronicznego. Ponadto przeprowadzono ocenę niezawodności zaprojektowanego urządzenia. (Kalibracja metrologicznych charakterystyk wielospektralnego urządzenia fotopletyzmograficznego do diagnostyki obwodowego przepływu krwi).

The capabilities of modern rapid prototyping tools for developing training of computed tomography 3D models in phthisiology

“…As a result of segmentation, a three-dimensional model of the lungs was obtained in the STL format, shown in Figure 2, and its segmentation was carried out to eliminate visualization artifacts (Figure 2, b). Using the FreeCAD software, the bracket was modeled in real physical dimensions, which was later merged into one model with the lungs 15,16,17 . Next, the resulting model was loaded into the specialized software MeshMixer 20,21 , which allows you to perform various manipulations on the three-dimensional models before printing.…”

3-D modeling capabilities for planning rhinologic surgical interventions from CT-datasets

“…Such approaches are also relevant in modeling the closure of cranial defects for the manufacture of a full-scale prototype of a bone implant [13][14][15] . In the tasks of configuration planning of functional rhinosurgical operations, it is also advisable to perform full-scale visualization and modeling of dynamic changes in the geometric characteristics of the anatomical structures of the operating area [16][17][18][19][20] . In addition, full-scale models can be used to predict the functional result of the operation and pre-operative verification of decisions made using tests on special aerodynamic stands [21][22][23][24] .…”