METHOD FOR THREE-DIMENSIONAL MAPPING OF HEART CHAMBERS USING ASTROCARDIUM NAVIGATION SYSTEM FOR TREATING PATIENTS WITH CARDIAC RHYTHM DISTURBANCE Russian patent published in 2020 - IPC A61B5/402 A61B5/55 A61B6/03 

FIELD: medicine.

SUBSTANCE: invention refers to medicine, namely to cardiosurgery, interventional arrhythmology, and can be used for three-dimensional mapping of heart chambers using Astrocard navigation system in treating patients with cardiac rhythm disturbance. MSCT, or CT, or MRI of the heart is performed to obtain 3D image of the heart. Intraoperative electroanatomical model of the heart chamber is obtained using the Astrocard navigation mapping system. Obtained electroanatomical model of heart chambers is combined with processed image of MSCT, or CT, or MRI of heart, for which at least two pairs of reference points located in pairs in different planes are selected on obtained images. Points of each pair on the obtained images are selected in the areas where the anatomical structures are visualized and at least 2 cm distant from each other. Selected points on the MSCT, or CT, or MRI image correspond to points on the electroanatomical model, and the pairs points are arranged so that lines drawn through said points in projection on plane are located at an angle of at least 45°. Further, images are aligned on selected points and position of images is corrected by anatomical landmarks. First reference point is bifurcation of the right veins, the second is the bifurcation of the left pulmonary veins, the third – the roof of the left atrium, the fourth is the base of the left atrial appendage.

EFFECT: method enables to obtain an accurate computer model of the heart chamber, providing higher accuracy and effectiveness of interventional treatment in heart rhythm disorders by selecting additional pairs of reference points.

1 cl, 4 dwg