【摘要】：目的:探討表觀擴(kuò)散系數(shù)(ADC)值及相對(duì)表觀擴(kuò)散系數(shù)(rADC)值在評(píng)價(jià)缺血性腦梗死缺血半暗帶中的應(yīng)用價(jià)值。方法:對(duì)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(fù)查,根據(jù)患者出現(xiàn)臨床癥狀到MRI檢查時(shí)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(duì)比分析不同時(shí)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(shí)間延長(zhǎng),上升趨勢(shì)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(jì)學(xué)意義(P0.01)。結(jié)論:ADC值及rADC值對(duì)判定缺血半暗帶具有較高的臨床應(yīng)用價(jià)值,有望成為一種簡(jiǎn)便易行的確定缺血半暗帶的檢查方法,為指導(dǎo)患者進(jìn)行臨床治療提供重要的影像學(xué)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(hào)：2509259