Article list

Investigators: Beáta Ondrušová, Jana Švehlíková, Ján Zelinka, Milan Tyšler, Peter Tiňo   In the study, we proposed a methodology for determining the significance of signals from individual electrodes of multichannel ECG measurement for solving the inverse problem to locate the source of the ventricular extrasystole. This method is based on the singular decomposition of the…

In the Department of Optoelectronic Measurement Methods of the Institute of Measurement of the Slovak Academy of Sciences, measuring systems for automated tilt measurement of reactor vessels of nuclear power plants in Jaslovské Bohunice and Mochovce have been continuously developed and are currently in operation. Measuring systems are based on the principles of hydronalization and…

Investigators: Ladislav Valkovič, Ivan Frollo Adenosine triphosphate (ATP) is an organic compound that provides energy to drive all processes in living cells, such as: muscle contraction or nerve impulse propagation. Phosphorus saturation-transfer experiments can be used to quantify metabolic fluxes of ATP noninvasively. Typically, only the forward ATP synthesis flux through the creatine kinase reaction…

Investigators: Bear L.R., Serinagaoglu Dogrusoz Y., Good W., Svehlikova J., Coll_Font J., van Dam E., MacLeod R. Within the consortium for electrocardiographic imaging, we investigated the effect of processing measured ECG signals on the chest surface on the inverse reconstruction of epicardial potentials and activation maps on the heart. Data were obtained from 4 animal…

Investigators: Martina Chvosteková, Anna Krakovská, Jozef Jakubík   Identifying the causal link between processes in a complex system is one of the fundamental challenges in the natural and social sciences. The first principle of Granger causality as the basic quantitative analysis of causality is the chronological order of cause and effect. The effect of the…

Investigator: Pavol Szomolányi Many factors provided by contrast media magnetic resonance imaging (MRI) influence is increasing in NMR signal strength. The effect on signal strength of different concentrations of gadolinium based contract agents and dilution of gadolinium-based macrocyclic contrast agents (GBCA) has been evaluated. This phantom study examined gadobutrol, gadoteridol and gadoterate in human plasma…

High-resolution X-ray microtomography measurement methods have been used in three-dimensional imaging in materials research, biology and paleontology. In non-destructive imaging and characterization of properties of new materials and technologies of additive production using 3D printing, microtomography was used in cooperation with FCFT STU to investigate the repeatability and reliability of 3D printing in additive production…

Investigator: M. Majerová   Aluminous glasses are interesting in terms of their basic structure. Alumina glasses have excellent mechanical properties, excellent corrosion resistance, show better light and heat resistance and better light conductivity than conventional silicate glasses. Another important feature of these glasses is that they are permeable to ultraviolet, visible and infrared radiation and…

Investigators: M. Škrátek, A. Dvurečenskij, A. Cigáň, J. Maňka Biogenic iron is found in all biological systems. Recently, ultra-small superparamagnetic iron oxide nanoparticles have also been used in biomedicine, which, as drug carriers, enable targeted dosing by the action of a magnetic field. The stability of these nanoparticles depends on the cellular environment (chemical composition,…

Investigator: Szomolányi, P. Many factors influence the increase in signal intensity provided by magnetic resonance imaging (MRI) contrast media. Purpose: To assess the impact of different gadolinium concentrations and dilutions of three macrocyclic gadolinium-based contrast agents. The test tubes were positioned in a rack in a silicon oil bath to maintain the temperature at 370C…