Patent ID: 6792302
Filing Date: 2004-09-14
Classification: A61B

Abstract:
A method for determining treatment for an acute stroke patient comprising:obtaining measurements of the brain of an acute stroke patient, said measurements including at least one of the cerebral blood flow and mean transit time, and also including measurements of cerebral blood volume; determining ischemic areas of the brain based on said measurements, wherein said ischemic areas are determined based on at least one of measurements corresponding to areas where cerebral blood flow is less than a predetermined first value less than a normal cerebral blood flow of an unaffected corresponding portion of the brain and measurements corresponding to areas where mean transit time is a predetermined second value greater than a normal mean transit time of an unaffected corresponding portion of the brain; determining penumbra areas of the ischemic areas of the brain using said measurements, wherein penumbra areas correspond to ischemic areas of the brain having cerebral blood volume greater than a predetermined third value; and determining a ratio between a total of said penumbra areas and a total of said ischemic areas of the brain, wherein upon said ratio being greater than or equal to a predetermined fourth value, said acute stroke patient is a candidate for thrombolysis therapy.