FTViewer Application for Analysis and Visualization of Functional Tomograms of Complex Systems

Рыкунов, С.Д.; Oplachko, E.S.; Ustinin, M.N.

doi:10.1134/s1054661820040227

Cited by 4 publications

(6 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is a set of elementary oscillations with known frequencies and source origins. The functional tomograms were next viewed in three dimensions using the specialized software FTViewer (Rykunov et al, 2020) for each subject: the scalp surface (S), nasal cavity (NC), oral cavity (OC), nasopharynx (Np), larynx (La) and the back of the neck (Nm).…”

Section: Resultsmentioning

confidence: 99%

Splitting of the magnetic encephalogram into «brain» and «non-brain» physiological signals based on the joint analysis of frequency-pattern functional tomograms and magnetic resonance images

Llinás

Рыкунов

Walton

et al. 2022

Front. Neural Circuits

View full text Add to dashboard Cite

The article considers the problem of dividing the encephalography data into two time series, that generated by the brain and that generated by other electrical sources located in the human head. The magnetic encephalograms and magnetic resonance images of the head were recorded in the Center for Neuromagnetism at NYU Grossman School of Medicine. Data obtained at McGill University and Montreal University were also used. Recordings were made in a magnetically shielded room and the gradiometers were designed to suppress external noise, making it possible to eliminate them from the data analysis. Magnetic encephalograms were analyzed by the method of functional tomography, based on the Fourier transform and on the solution of inverse problem for all frequencies. In this method, one spatial position is assigned to each frequency component. Magnetic resonance images of the head were evaluated to annotate the space to be included in the analysis. The included space was divided into two parts: «brain» and «non-brain». The frequency components were classified by the feature of their inclusion in one or the other part. The set of frequencies, designated as «brain», represented the partial spectrum of the brain signal, while the set of frequencies designated as «non-brain», represented the partial spectrum of the physiological noise produced by the head. Both partial spectra shared the same frequency band. From the partial spectra, a time series of the «brain» area signal and «non-brain» area head noise were reconstructed. Summary spectral power of the signal was found to be ten times greater than the noise. The proposed method makes it possible to analyze in detail both the signal and the noise components of the encephalogram and to filter the magnetic encephalogram.

show abstract

Section: Resultsmentioning

confidence: 99%

Splitting of the magnetic encephalogram into «brain» and «non-brain» physiological signals based on the joint analysis of frequency-pattern functional tomograms and magnetic resonance images

Llinás

Рыкунов

Walton

et al. 2022

Front. Neural Circuits

View full text Add to dashboard Cite

show abstract

“…In works [4,5] the step-by-step process of developing such technology of constructing stereo images combined with stereo text as multi-view representation was considered in detail. This technology allows to achieve the highest stereo effect for visualization of results for mathematical modeling calculations, which are performed by Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences [6, 9,19].…”

Section: Previous Workmentioning

confidence: 99%

“…Stereoscopy can also be used in medical research. For example, in [19], computer tomography data were visualized, including stereo images. Such visualization allows specialists in medicine to detect pathologies in patients more effectively.…”

Section: Previous Workmentioning

confidence: 99%

On the Application of Stereoscopic Technologies in Biological Research

Andreev,

Bondarev,

Bondareva

et al. 2023

View full text Add to dashboard Cite

The work is devoted to the application of previously developed algorithms and methods of stereo animations construction in the field of biological research on the example of stereo images for functional tomogram of the brain. The construction of stereo images on the autostereoscopic monitor provides an opportunity to obtain an in-depth understanding of the studied object. The autostereoscopic monitor allows viewing stereo images without glasses, while providing a quality not inferior to that of a classical 3D projection stereo system. This work continues the cycle of research conducted at the Keldysh Institute of Applied Mathematics. The specificity of the displayed data allowed to improve authoring libraries for creating stereo images. The research is aimed at developing technologies for constructing stereo images and animations for presenting the results of scientific calculations on classical stereo devices and autostereoscopic monitors. Constructing a stereoscopic visual representation of the results of biological research will enable researchers in the field to gain a deeper understanding of the object under study and its properties.

show abstract

“…Келдыша РАН). Примером такой задачи является исследование, посвященное анализу функциональных томограмм сложных систем и рассмотрению методов фильтрации регистрируемых сигналов для получения достоверной пространственной конфигурации, с визуальным отображением которой могут работать пользователи [20].…”

Section: применение стереотехнологий в области биологических исследов...unclassified

“…На рисунке 3 представлена функциональная томограмма в разных диапазонах частот [20]. Результаты показаны в виде трехмерных изображений, представленных с разных ракурсов.…”

Section: применение стереотехнологий в области биологических исследов...unclassified

Application of Stereoscopic Technologies in Biological Research

Andreev,

Bondarev,

Bondareva

et al. 2023

Proceedings of the 33rd International Conference on Computer Graphics and Vision

View full text Add to dashboard Cite

The work is devoted to the application of previously developed algorithms and methods of construction of stereo animations in the field of biological research on the example of stereo images for functional tomogram of the brain. The construction of stereo images on the autostereoscopic monitor provides an opportunity to obtain an in-depth understanding of the studied object. The autostereoscopic monitor allows viewing stereo images without glasses, while providing a quality not inferior to that of a classical 3D projection stereo system. This work continues the cycle of research conducted at the Keldysh Institute of Applied Mathematics. Keldysh Institute of Applied Mathematics. The specificity of the displayed data allowed to improve authoring libraries for building stereo images. The research is aimed at developing technologies for building stereo images and animations for presenting the results of scientific calculations on classical stereo devices and autostereoscopic monitors.

show abstract

FTViewer Application for Analysis and Visualization of Functional Tomograms of Complex Systems

Cited by 4 publications

References 19 publications

Splitting of the magnetic encephalogram into «brain» and «non-brain» physiological signals based on the joint analysis of frequency-pattern functional tomograms and magnetic resonance images

Splitting of the magnetic encephalogram into «brain» and «non-brain» physiological signals based on the joint analysis of frequency-pattern functional tomograms and magnetic resonance images

On the Application of Stereoscopic Technologies in Biological Research

Application of Stereoscopic Technologies in Biological Research

Contact Info

Product

Resources

About