METHOD OF DIAGNOSING CHANGES IN PERIFOCAL REGION DURING SMALL SUPRATENTORIAL INTRACEREBRAL BLEEDING Russian patent published in 2009 - IPC A61B5/55 

FIELD: medicine.

SUBSTANCE: decrease or increase of rate of diffusion of water protons in brain matter is determined from measured diffusion coefficient (MDC) for a patient with acute cerebrovascular event using timed diffusion-weighted magnetic resonance imaging (DW MRI). Through timed magnetic resonance imaging of perfusion, cerebral blood flow is determined from average time of flow of contrast medium (rMTT) and from the average time before achieving maximum concentration of contrast medium (rTTP). The given indicators are also determined in corresponding brain regions of the "undamaged" hemisphere. During small supratentorial intracerebral bleeding in the perifocal region, absence of ischemic damage to brain matter is diagnosed if the ratio of the measured diffusion coefficient in the "damaged" and "undamaged" hemispheres is greater than 1.5 and decreases towards the end of the subacute period, and rMTT and rTTP in the "damaged" and "undamaged" hemispheres during the acute and subacute periods are identical.

EFFECT: diagnosis method allows for evaluating functional state of zones, surrounding hematoma, detecting presence or absence of ischemic factor in the region of perifocal changes during small supratentorial intracerebral bleeding.

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