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- W2385882067 abstract "Objectives To analyze the image characteristics of old cerebral infarction,to evaluate the reliability and efficacy of intermittent pressor perfusion by the way of carotid and vertebral arteries and to investigate the rationale of pressor perfusion.Methods Perfusion weighted imaging(PWI) was performed in 45 cases of cerebral infarction.The side-to-side ratios of regional cerebral blood flow(rCBF),regional cerebral blood volume(rCBV) and mean transit time(MMT) were measured at duty lesion of ischemia.The hypoperfused cerebral areas and the stages of ischemia were defined as follows:compensation stage: rCBF was normal,rCBVwas increased,MTT was prolonged;decompensation stage: rCBF was slightly decreased,rCBV was normal or decreased,MTT was prolonged;pre-infarction stage: rCBF and rCBV were decreased,MTT was prolonged.After pressor perfusion therapy, PWI was performed again,then the parameters were compared and therapeutic efficacy was evaluated with NIHSS score.Results After therapy,the neurological deficits were improved to different degrees,median NIHSS score decreased from 10 to 8,the blood perfusion of ischemic area on PWI was markedly increased in 14 cortical infarction cases and all cerebral watershed infarction cases,but not in 2 basal nuclei infarction cases compared with those before therapy.Conclusions Cerebral hypoperfusion exists for long time after cerebral infarction.DSA combined with PWI can evaluate the ischemic degree and therapeutic value.The collateral circulation may play the important role in the therapeutic efficacy." @default.
- W2385882067 created "2016-06-24" @default.
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- W2385882067 date "2007-01-01" @default.
- W2385882067 modified "2023-09-28" @default.
- W2385882067 title "Investigation of the image feature of old cerebral infarction and treatment with pressor perfusion" @default.
- W2385882067 hasPublicationYear "2007" @default.
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