戴東璟四川廣元市第一人民醫(yī)院神經(jīng)內(nèi)科 廣元 628017
腦小血管病患者M(jìn)R彌散張量成像的改變及與認(rèn)知功能障礙的關(guān)系
戴東璟
四川廣元市第一人民醫(yī)院神經(jīng)內(nèi)科 廣元 628017
目的 探討腦小血管病患者M(jìn)R彌散張量成像的改變以及與認(rèn)知功能障礙間的關(guān)系。方法 選取我院接受檢查的小腦血管疾病患者70例,根據(jù)有無(wú)認(rèn)知障礙分為非癡呆認(rèn)知功能障礙(VCIND)組39例和認(rèn)知功能正常(NCI)組31例。對(duì)患者進(jìn)行蒙特利爾認(rèn)知評(píng)估(MoCA)及MRI檢查,并對(duì)彌散張力成像(DTI)進(jìn)行處理,顯示表觀(guān)彌散系數(shù)圖(ADC)以及各向異性分?jǐn)?shù)圖(FA),分析MoCA與DTI的相關(guān)性。結(jié)果 VCIND組MoCA量表評(píng)分(17.54±4.31)分,NCI組為(24.01±2.02)分;VCIND組雙側(cè)半卵圓中心、雙側(cè)額葉、雙側(cè)丘腦以及左側(cè)尾狀核FA值明顯低于NCI組,VCIND組左側(cè)尾狀核ADC值明顯高于NCI組,差異有統(tǒng)計(jì)學(xué)意義(P<0.05)。雙側(cè)半卵圓中心、雙側(cè)額葉以及左側(cè)尾狀核FA值與MoCA呈正相關(guān)(P<0.05)。結(jié)論 腦小血管疾病患者認(rèn)知功能障礙與DTI的FA值呈正相關(guān)。
腦小血管?。粡浬埩砍上?;認(rèn)知功能障礙
腦小血管?。╯mall vessel disease,SVD)通常指病變累及腦小、微動(dòng)脈,微靜脈及毛細(xì)血管,導(dǎo)致其結(jié)構(gòu)、功能等出現(xiàn)病理改變的過(guò)程,主要表現(xiàn)為腦白質(zhì)疏松、腔梗死及微出血。研究報(bào)道[1],因腦小血管病導(dǎo)致腦實(shí)質(zhì)發(fā)生病變可能影響患者認(rèn)知功能,如果腦小血管病患者影像學(xué)改變與認(rèn)知能力存在一定關(guān)系,可通過(guò)該方式預(yù)測(cè)、判斷患者預(yù)后及認(rèn)知功能。本次研究選取在我院接受檢查的腦小血管病患者70例,分析腦小血管病患者M(jìn)R彌散張量成像的改變以及其與認(rèn)知功能障礙的關(guān)系。
1.1 一般資料 選取2011-08—2014-08在我院接受檢查的腦小血管病患者70例,男51例,女19例,平均年齡(65.64±12.45)歲。根據(jù)有無(wú)認(rèn)知障礙分為非癡呆認(rèn)知功能障礙(VCIND)組(39例)和認(rèn)知功能正常(NCI)組(31例)。VCIND組男29例,女10例,平均年齡(66.48±13.16)歲;NCI組22例,女9例,平均年齡(64.98±12.08)歲。納入標(biāo)準(zhǔn)[2]:(1)經(jīng)檢查有腦小血管病;(2)無(wú)癡呆等其他因素造成的認(rèn)知功能障礙。排除標(biāo)準(zhǔn):(1)存在腦小血管病外可導(dǎo)致認(rèn)知功能障礙疾病者;(2)精神異常者。2組患者在性別、年齡等方面無(wú)顯著性差異(P>0.05)。
1.2 方法 患者入院24h內(nèi)進(jìn)行蒙特利爾認(rèn)知功能評(píng)估(MoCA)以及MRI檢查,并對(duì)彌散張力成像(DTI)進(jìn)行處理,顯示表觀(guān)彌散系數(shù)圖(ADC)以及各向異性分?jǐn)?shù)圖(FA)。所有測(cè)量由同一醫(yī)師操作,分析MoCA與DTI的相關(guān)性[3]。
1.3 統(tǒng)計(jì)學(xué)分析 運(yùn)用統(tǒng)計(jì)學(xué)軟件SPSS 19.0進(jìn)行統(tǒng)計(jì)學(xué)處理,計(jì)量資料采取均數(shù)±標(biāo)準(zhǔn)差(±s)表示,行t檢驗(yàn),采用Pearson相關(guān)分析,P<0.05為差異有統(tǒng)計(jì)學(xué)意義。
2.1 2組MoCA量表評(píng)分及FA對(duì)比 VCIND組MoCA量表評(píng)分(17.54±4.31)分,NCI組為(24.01±2.02)分。VCIND組雙側(cè)半卵圓中心、雙側(cè)額葉、雙側(cè)丘腦以及左側(cè)尾狀核FA值明顯低于NCI組,差異有統(tǒng)計(jì)學(xué)意義(P<0.05)。見(jiàn)表1。
2.2 2組ADC值對(duì)比 VCIND組左側(cè)尾狀核ADC值明顯高于NCI組,差異有統(tǒng)計(jì)學(xué)意義(P<0.05)。見(jiàn)表2。
2.3 MoCA與DIT的相關(guān)性 Pearson分析顯示,雙側(cè)半卵圓中心、雙側(cè)額葉以及左側(cè)尾狀核FA值與MoCA呈正相關(guān)(P<0.05)。
Changes of MR diffusion tensor imaging in patients with cerebral small vessel disease and its relationship with cognitive dysfunction
Dai Dongjing
Department of Neurology,the First People's Hospital of Guangyuan,Guangyuan628017,China
Objective To analyze and discuss the relationship between cerebral small vessel disease in patients with MR diffusion tensor imaging changes and cognitive dysfunction.Methods 70patients with cerebella vascular disease examined in our hospital were divided into non-dementia cognitive impairment(VCIND)group(n=39)and normal cognitive function(NCI)group(n=31)according to the presence or absence of cognitive impairment.Patients adopted Montreal Cognitive Assessment(MoCA)and MRI inspection,and diffusion tensor image(DTI)was processed,we displayed the apparent diffusion coefficient map(ADC)and fractional anisotropy map(FA),and analyzed the correlation between MoCA and the DTI.Results MoCA scale in VCIND group was 17.54±4.31,which was 24.01±2.02in NCI group.The FA values in bilateral centrum ovule,bilateral frontal,bilateral caudate nucleus of the thalamus and the left of VCIND group were significantly lower than those of NCI group,the ADC in left caudate nucleus of VCIND group was significantly higher than that of NCI group,the differences were statistically significant(P<0.05).The FA values in bilateral semi-oval center,bilateral frontal lobe and the left caudate nucleus were positively correlated to MoCA(P<0.05).Conclusion The cognitive dysfunction in patients with cerebral small vessel disease is positively correlated to FA values in DTI.
Cerebral small vessel disease;Diffusion tensor imaging;Cognitive dysfunction
R743
A
1673-5110(2015)11-0063-02
中國(guó)實(shí)用神經(jīng)疾病雜志2015年11期