【摘要】：目的:探討表觀擴散系數(shù)(ADC)值及相對表觀擴散系數(shù)(rADC)值在評價缺血性腦梗死缺血半暗帶中的應用價值。方法:對42例超急性期腦梗死患者行常規(guī)CT、MRI、DSA檢查,并于24h后行CT及MRI復查,根據(jù)患者出現(xiàn)臨床癥狀到MRI檢查時間分為超急性期(發(fā)病6h以內(nèi))、急性期(6~24h)和亞急性早期(24h~7d)。對比分析不同時期患側(cè)梗死核心區(qū)、缺血半暗帶與健側(cè)鏡像區(qū)的ADC及rADC值。結(jié)果:超急性期、急性期及亞急性期梗死核心區(qū)ADC值及rADC值均低于健側(cè)鏡像區(qū),缺血半暗帶ADC值及rADC值僅輕度下降,平均降幅為20%。梗死核心區(qū)與缺血半暗帶ADC值及rADC值隨著發(fā)病時間延長,上升趨勢不同。缺血半暗帶ADC值及rADC值均高于梗死核心區(qū),差異有統(tǒng)計學意義(P0.01)。結(jié)論:ADC值及rADC值對判定缺血半暗帶具有較高的臨床應用價值,有望成為一種簡便易行的確定缺血半暗帶的檢查方法,為指導患者進行臨床治療提供重要的影像學依據(jù)。
[Abstract]:Objective: to investigate the value of apparent diffusion coefficient (ADC) and relative apparent diffusion coefficient (rADC) in evaluating ischemic penumbra in ischemic cerebral infarction. Methods: 42 patients with hyperacute cerebral infarction were examined by routine CT,MRI,DSA, and CT and MRI were reexamined 24 hours later. According to the time from clinical symptoms to MRI, they were divided into hyperacute phase (less than 6 hours after onset), acute phase (6 鈮，

本文編號：2509259