3dtofmra上大脑前动脉、后动脉偏侧优势预测大脑中动脉供血区梗死的长期功能预后

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1、AbstractThe3D—TOFMRAanteriorcerebralartery，theartery—afterpredictinglong--termfunctionalbrainlateralizationadvantagearteryterritoryinfarctionprognosisPostgraduateJianboJiaTutorYajunLianDepartmentofNeurologThefirstAffiliatedHospitalofZhengzhouUniversityZhengzhou，Henan450014，ChinaBackgr

2、oundandobjeetiveCerebralinfarction(CerebralInfarction，CI)referstoischemicstroke，isduetothebloodsupplytothebraindisorders，ischemia，hypoxiainducedfocalbraintissuenecrosis，theclinicalincidencerateisabout70％ofallstroke．Bydigitalsubtractionangiography(DigitMSubtractionAngiography，DSA)confi

3、rmed，80％CIstartinginpatientswithintracranialandneckvascularstenosis，theethnicAsians，blacksandHispanicsinthemostunusualintracranialvascularstenosis．ThemaincausesofCIisduetoatherosclerosis，leadingtoseverestenosis，cervicalandintracranialvascularthrombosisorplaqueoffcausebrainbloodflowcor

4、respondingsupplyareadecreasedsharply，appearandhypoxiaischemianecrosissoftening．Generallyin20—30yearswillappeartheatheroscleroticarterystenosisandocclusion，50-70yearsoldisthepeakincidence，onsetshowedfibrousplaque，advancedlesionsappearirregularthickeningofarterialwall，wallplaqueformatio

5、n，resultinginluminalstenosis，SOthatthedistalbloodsupplydecrease，eventuallybecauseofrepeatedplateletaggregation，fibrinogenandbloodcelldepositioninducedthrombosisorplaqueoffcausingvesselocclusion．TheincidenceofCIVAbstractworldwide，themorbidityandmortalityratearehigher，andthereareobvious

6、increasingtendencyyearbyyear，therefore，earlydiagnosisandpreventionoftheoccurrenceofCI，development，improvethelevelofmedicaltreatmentistheworldworktogetherDearconcern．Currentclinicaldetectingmethodofcollateralcirculationofdigitalsubtractionangiography(DSA)，magneticresonanceangiography(M

7、RA)，transcranialDoppler(TCD)，whereDSAareinvasiveexamination，thebrainchangesarenotcomplete，andcheckthecostishigher；thereforeclinicalmultiuseMRAasconventionalnoninvasivevascularimagingdetectiontechnology，canaccuratelydisplaytheanatomyof、Mllisringofvascularstructures，butalsocanreflectthe

8、blood