磁共振功能成像DWI技術(shù)在家兔胰腺腫物模型鑒別中的應(yīng)用價(jià)值
發(fā)布時(shí)間:2019-05-24 00:11
【摘要】:目的探討磁共振分子功能成像DWI技術(shù)在動(dòng)物模型胰腺癌與腫塊型胰腺炎的鑒別中的應(yīng)用價(jià)值。方法選取實(shí)驗(yàn)室內(nèi)家兔胰頭移植瘤模型、慢性腫塊型胰腺炎模型、正常家兔各8只,對(duì)其進(jìn)行磁共振彌散加權(quán)分子功能成像,b值為333、667、1 000s/mm~2,觀察不同b值下胰腺癌模型、慢性炎性模型及正常兔胰腺區(qū)的表觀彌散系數(shù)(ADC),并分析不同b值下胰腺癌模型、慢性炎性模型及正常兔胰腺區(qū)的ADC值及表觀彌散系數(shù)差值(DADC)的變化情況,并觀察各組織在分子擴(kuò)散、組織灌注等方面中的差異。結(jié)果整個(gè)研究周期,胰頭移植瘤模型死亡率為50%;腫塊型胰腺炎模型和8只正常家兔均正常存活。相同b值下胰腺癌ADC值明顯低于慢性炎癥及正常胰腺區(qū),隨著b值的增大,各組織ADC值明顯下降,b值為333s/mm~2時(shí),各組織內(nèi)ADC數(shù)值存在差異(F=6.662,P=0.014),組間兩兩比較,胰腺癌與胰腺炎(t=6.773,P=0.003),胰腺癌與正常胰腺(t=5.883,P=0.016),差異有統(tǒng)計(jì)學(xué)意義(P0.05)。b值增大,DADC越小,不同b值時(shí)胰腺癌區(qū)與慢性炎癥腫塊區(qū)、胰腺癌區(qū)與正常胰頭區(qū)各組織DADC值變化差異有統(tǒng)計(jì)學(xué)意義(P0.05)。結(jié)論合理選擇b值的分子功能成像DWI技術(shù)能夠較好的鑒別胰腺癌與腫塊型胰腺炎,可在動(dòng)物胰頭癌模型的評(píng)價(jià)中推廣應(yīng)用。
[Abstract]:Objective to evaluate the value of magnetic resonance molecular functional imaging (DWI) in the differential diagnosis between pancreatic cancer and mass pancreatitis in animal models. Methods eight rabbits with pancreatic head transplantation, eight rabbits with chronic mass pancreatitis and eight normal rabbits were treated with diffusion-weighted molecular functional imaging (b = 333, 667, 1000 s 鈮,
本文編號(hào):2484373
[Abstract]:Objective to evaluate the value of magnetic resonance molecular functional imaging (DWI) in the differential diagnosis between pancreatic cancer and mass pancreatitis in animal models. Methods eight rabbits with pancreatic head transplantation, eight rabbits with chronic mass pancreatitis and eight normal rabbits were treated with diffusion-weighted molecular functional imaging (b = 333, 667, 1000 s 鈮,
本文編號(hào):2484373
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