METHOD FOR DIAGNOSTICS AND CONTROL OF TREATMENT OF CARDIAC PATHOLOGIES Russian patent published in 2023 - IPC A61B5/536 A61B5/55 A61B6/03 

FIELD: medicine.

SUBSTANCE: invention relates to medicine and is intended for carrying out a diagnostic procedure - a non-invasive electrophysiological study of the heart using the joint use of the method of impedance tomography and the method of non-invasive mapping of the heart. At the same time, electrodes for recording potentials are placed on the surface of the patient's chest. Computed or magnetic resonance imaging of the patient's chest with fixed electrodes is performed to determine the geometry of the torso, heart and electrode coordinates in the coordinate system of the tomograph. Sequentially pass through each pair of electrodes an electric current of low intensity. On the remaining electrodes, the potentials required for impedance tomography are measured. Using the same device that recorded the potentials for impedance tomography, cardiac activity is recorded from previously installed electrodes. Read the results of all measurements in the PC and numerically solve the system of equations to calculate the spatial distribution of the impedance. When deciding the equations use the previously determined coordinates of the electrodes, the potentials recorded on them, and the current values. The inverse problem of electrocardiography is solved using the results of recorded cardiac activity, data on the geometry of the patient's torso and heart, and using information on the distribution of electrical impedance. The results of the solved inverse problem are visualized in the form of isochronous, isopotential and activation maps of the heart. Conduct a clinical assessment of the results.

EFFECT: achieved simplification of the method for diagnosing and monitoring cardiac pathologies, as well as increasing the accuracy of measurements and convenience for the patient by attaching a smaller number of electrodes to the patient's body.

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