METHOD FOR QUANTITATIVE ESTIMATION OF VIOLATIONS OF RIGHT VENTRICLE MYOCARDIUM PERFUSION BASED ON DATA OF ONE-PHOTON-EMISSION COMPUTER TOMOGRAPHY Russian patent published in 2017 - IPC A61B6/03 

FIELD: medicine.

SUBSTANCE: invention can be used to quantify the violations of right ventricular (RV) myocardial perfusion according to single-photon emission computed tomography (SPECT). Single-photon emission computed tomography (SPECT) is performed, and the ratio of the intensity radiopharmaceutical (RP) accumulation by the right and left ventricle (LV) is measured. At the same time, RV outflow is performed semi-automatically using the "restriction" and "masking" modes to obtain quantitative polar RV perfusion maps in addition to similar LV maps. Quantitative parameters of RV perfusion abnormalities are defined similar to LV, including data on absolute statistics of the account in each RV segment. Then the RV/LV_(s) coefficient is calculated using the quantitative polar map data: RV/LV_(s)=CmaxRV/CmaxLV, where Cmax RV, LV is the maximum value of the number of pulses in segments related to the RV and the LV, respectively. For RV/LV_(s) values <0.3 the RV condition is interpreted as normal, the values of 0.3<RV/LV_(s)<0.5 are interpreted as boundary values, RV/LV_(s) values >0.5 are interpreted as signs of RV overload and hypertrophy.

EFFECT: increased sensitivity, accuracy of quantification and diagnosis of violations of right ventricular myocardium perfusion, characterized by easy reproducibility and operational independence.

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