METHOD FOR DETERMINATION OF TERMS OF REPEATED SESSION OF REMOTE SHOCK-WAVE LITHOTRIPSY Russian patent published in 2018 - IPC A61B5/55 A61B8/06 

FIELD: medicine.

SUBSTANCE: invention can be used to determine the time of a repeated session of remote shock wave lithotripsy (RSWL). 2-3 days after the first session of RSWL, the resistance index is determined according to ultrasound dopplerography of the kidneys. The area of kidney parenchyma damage and the change in the diffusion coefficient are measured based the data of diffusion-weighted magnetic resonance tomography of the kidneys. The duration of the repeated session of remote shock wave lithotripsy is determined according to the formula y=4.6+10.1x₁-0.9X_2/100%+0.14x₃+0.12x₄, where y is the number that determines the time of the repeated session of remote shock wave lithotripsy in days; x₁ is the resistivity index Ri in cond. units; x₂ is the change in the diffusion coefficient in percent; x₃ is the area of damage S in mm²; x₄ is the patient's age in years.

EFFECT: method allows to limit excessive wave influence on the kidney parenchyma.

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