Article list

Investigators: Jiří PŘIBIL, Anna PŘIBILOVÁ, Ivan FROLLO,  IMS SAS   Our research is focused in analyze and monitoring of a mental and physiological state of an examined person during scanning in the magnetic resonance imaging (MRI) device working with weak magnetic field up to 0.2 T. Our final aim is to detect and suppress negative…

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Investigators: Přibil Jiří, Přibilová Anna, Frollo Ivan   In many people, exposure to acoustic noise and/or vibration causes negative psychological reaction that can be identified with negative emotional states of anger, fear, or panic. Recognition of these negative affective states in the speech signal of the noise-exposed speaker may be used as another stress indicator….

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…

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…

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…

Investigators: Valkovič L.  Frollo, I.  Ústav merania SAV Phosphorous MR spectroscopy (31P-MRS) forms a powerful, non-invasive research tool for energy metabolism quantification in the heart and skeletal muscle tissue in diverse patient populations.  In this work, we have quantitatively assessed the impact of contrast agents, used in radiology, on the relaxation properties of 31P metabolites….

Investigators: V. Juráš, P. Szomolányi, L. Valkovič The goal of the research was to investigate T2 – relaxation parameters mapping as a possible marker for low-grade human articular cartilage lesions during a one-year follow-up, possible changes during the follow-up and compare the reliability and sensitivity of these measurements on high-field (3 T) and ultra-high-field (7…

Investigator: L. Valkovič Failing heart is like a pump without fuel; where besides depletion in energy rich metabolites tissue often undergoes acidification. Measurement of intra-myocardial pH using typical magnetic resonance methods hindered by the dominant signal originating in blood that obscures inorganic phosphate (Pi) signal. We have therefore developed a new method using long repetition…

Investigators: I. Frollo, P. Andris, A. Krafčík, D. Gogola, T. Dermek Magnetic resonance imaging requires a source of magnetic field of the highest homogeneity for the entire volume of the object under study. The aim of this result is the presentation of shim coil design methods, theoretical calculations and homogeneous tomograph homogeneity adjustment, based on…