�头颈部影像学MSCTevaluationoffacialnervecanalZHANGYuan,XIANJun-fang*,CHENGuang-li,YANGBen-tao,CHENQing-hua,WANGZhen-chang(DepartmentofRadiology,BeijingTongrenHospitalAffiliatedtotheCapitalUniversityofMedicalSciences,Beijing100730,China)[Abstract]�Objective�ToinvestigatemultisliceCT(MSCT)findingsofintratemporalfacialnervecanalwithmultiplanarreconstruction(MPR)andcurved-planarreconstruction(CPR)�Methods�MSCTwasperformedin70patientswithparana-salsinusitiswithoutabnormalityintemporalboneincluding50adultsand20children�Originalimagesweretransferredtoworkstationforimageprocessing�Accordingtothecourseofintratemporalfacialnervecanal,MPRandCPRimageswereacquired�FacialnervecanalandrelationwithadjacentstructuresweremeasuredindifferentMPRandCPRimages�Theap-pearancesoffacialnervecanalindifferentimagesandagegroupswerecompared�Results�ThelengthoftympanicsegmentonCPRimagewaslongerthanthatonMPRimage,anditswidthonMPRimagewaswiderthanthatonCPRimage(P<0�05)�However,therewasnosignificantdifferenceinthelengthandwidthoflabyrinthineandmastoidsegmentbetweenMPRandCPRimages(P>0�05)�TheCPRimagesacquiredinthecoronalplaneshowedthefirstgenuexactly,whiletheCPRimagesacquiredintheaxialplaneshowedthesecondgenuexactly�Thedehiscentincidenceofthefirstgenuwas21�4%onbothMPRandCPRimages,and32�9%,31�4%ofthetympanicsegmentonMPRandCPRimages,respectively(P>0�05)�OneearwiththebifurcateofthetympanicsegmentwasshownonMPRimage,butmissedonCPRimages�Thelengthofmastoidsegmentinadultswaslongerthanthatinchildren(P<0�05)�Conclusion�MPRandCPRimagesbymu-ltislicespiralCTarebothvaluablemethodsoffacialnervecanalassessment�Incombinationwithprimitiveaxialimages,MPRandCPRimagesmayprovidereliableevidenceforthediagnosisandsurgicaltreatmentoffacialnervediseases.[Keywords]�Facialnerve;Anatomy;Tomography,X-raycomputed[基金项目]北京市科技新星项目(2004-B-31)和北京市自然基金项目(7062019)。[作者简介]张媛(1980-),女,北京人,硕士。研究方向:头颈部影像学。E-mail:cmazhangyuan@163�com[通讯作者]鲜军舫,首都医科大学附属北京同仁医院放射科,100730。Email:cjr�xianjunfang@vip�163�com[收稿日期]2008-02-26��[修回日期]2008-09-16MSCT测量面神经管张�媛,鲜军舫*,陈光利,杨本涛,陈青华,王振常(首都医科大学附属北京同仁医院放射科,北京�100730)[摘�要]�目的�探讨16层螺旋CT多平面重建(MPR)和曲面重建(CPR)技术对面神经管正常解剖及变异的显示能力及其CT表现。方法�选取2006年3月�2006年9月来我院行鼻旁窦螺旋CT检查且无颞骨病变的患者70例,其中成人50例(100耳),儿童20例(40耳);将原始图像传至后处理工作站,分别采用MPR及CPR两种图像后处理技术对面神经管进行重建。在重建出的MPR斜矢状面、MPR斜横断面及两幅CPR图像上观察面神经管的正常形态,并在不同重建图像上分别对面神经管各段的长度、宽度、前后膝角度进行测量。结果�MPR与CPR者对鼓室段长度和宽度的测量结果存在明显差异,MPR斜矢状面测得鼓室段长度小于CPR测值(P<0�05),二者对面神经管骨壁裂缺的显示率差异无统计学意义(P>0�05)。MPR与CPR对膝状神经节骨壁裂缺显示率均为21�43%(30/140),对鼓室段骨壁裂缺显示率分别为32�86%(46/140)、31�43%(44/140,P>0�05)。乳突段长度在成人为(13�68�1�05)mm,儿童为(9�98�0�92)mm,儿童乳突段长度明显小于成人(P<0�05)。面神经管乳突段宽度、迷路段及鼓室段长度和宽度、前后膝角度在成人和儿童之间差异无统计学意义(P>0�05)。结论�多层螺旋CT多平面和曲面重建技术是研究面神经管影像解剖的良好方法,合理结合应用可为面神经病变的诊断治疗提供可靠信息。[关键词]�面神经;解剖;体层摄影术,X线计算机[中图分类号]�R445�3;R322�8�[...
