高分辨率颞骨CT与颞骨解剖间的关系分析

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1、北京大学医学部硕士学位论文TheRelationshipbetweentheHighResolutionCTandtheAnatomicStructuresintheTemporalBoneENTDepartmentofPekingUniversityThirdHospitalGraduateStudentofMasterDegree:JiaKeSupervisor:FurongMaAbstractObjectives:1.Tocompareanatomicmeasurementsoffacialner

2、veandsurroundinganatomicstructuresonthetemporalbonewithmeasurementsontheHRCT.2.ToevaluatethefeasibilityoflocalizingtheIACandthefacialnervethroughsuperiorsetrosaltrianglewhichconsistsoftherootofthezygoma、foramenspinosumandtheheadofthemalleusinmiddlefossaa

3、pproachwiththeasistanceofHRCT.Methods:18humancadaverictemporalboneswerescannedbyHRCTanddealtwithMPR.Wecompletedananatomicalstudyinthemthroughthemastoidapproach,measuredthedistancesandanglesofthefacialnerveanditssurroundingstructures,andcomparedthemwithth

4、emeasurementsonHRCT.Subsequently,wedividedtheminto2groups.GroupAwasstudiedfirstthroughamiddlefossaapproachtofindouttherelationshipbetweentheHRCTmeasurementsandtheanatomicmeasurements.Then,4wholehumancadavericheads(8temporalbones)ofGroupBweredissectedusin

5、gaHRCTorientedmiddlefossaapproachtolocalizeIACwiththerootofthezygoma,foramenspinosumandtheheadofthemalleusaslandmarks.Results:1.Westudiedanatomicalmeasurementsoffacialnerveandsurroundinganatomicstructuresin18humancadaverictemporalbonesandmeasurementsonHR

6、CTandconcludedtheirrelationship.2.WithHRCT,welocalizedtheheadofthemalleuswithin4mm,exposedtheIACandfoundfacialnervewithin15°deviationof2北京大学医学部硕士学位论文theROHreferenceline.Conclusions:HRCTandMPRwillprovidemoreinformationontherelationshipbetweenthefacialnerv

7、eincadavericbonesandtheimportantanatomicstructures.WecanlocalizetheheadofthemalleusthroughsuperiorsetrosaltrianglewithHRCTandthereforeexposetheIACwiththeheadofthemalleusasalandmarkinmiddlefossaapproachwhenotherlandmarksarenotrecognizable.Keywords:FacialN

8、erve;HRCT;SuperiorSetrosalTriangle;TheHeadoftheMalleus;MiddleFossaApproach3北京大学医学部硕士学位论文文献综述颞骨内面神经定位面神经是在颅内穿行距离最长的一支颅神经，其解剖一直是耳显微外科中的一项重要内容。由于面神经在颞骨内走行距离长，变异大，因此能够准确的识别面神经的位置是保证术中最大限度的减少面神经损害的重要因素。耳显微外科的常规手术操作均与面神经的解剖有关，经外