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1、临床医学论文■在16排螺旋CT图像上颅骨茎突的表现及临床意义【摘要】探讨16排螺旋CT图像后处理评价颅底茎突解剖的准确性，为临床诊断和治疗茎突综合征提供准确的活体解剖数据。〔方法〕100例茎突正常受检者行16排螺旋CT检查后，行多层面重建(MPR)，曲面重建(CPR)，三维表面遮盖显示(SSD)，容积显示(VR)4种后处理。分别测量茎突长度、前倾角、内倾角，茎突■颈动脉管口、茎突■颈静脉孔、茎突•茎乳孔、茎突■乳突、茎突■颈内动脉及茎突■颈内静脉的距离。〔结果〕茎突长度(24.51±3.05)mm，左侧茎突长度(24.33+3.15)mm，
2、右侧茎突长度(24.69±2.95)mm；前倾角19.35°±2・92°，内倾角24.00°±4.07°。茎突•颈动脉管外口距离(8・53±2.45)mm，茎突■颈静脉孔距离(2.87±0.88)mm，茎突■茎乳孔距离(2.34±0.74)mm，茎突■乳突距离(17.23±1.85)mm。茎突•颈内动脉及茎突•颈内静脉的距离分别为(6.49±1.58)mm<3.70±1.46)mmo〔结论〕16排螺旋CT后处理对茎突的活体解剖显示全面、准确，其中多层面重建及三维表面遮盖显示最有价値，可对活体茎突及其周围毗邻关系做出准确、全面的评价。【关键词
3、】多层面重建曲面重建三维表面遮盖显示容积显示茎突活体解剖AbstractObjective]Toinvestigatethevalueof16slicespiralCT(MSCT)postprocessinginstyloidprocessinvivoandprovidethevivisectiondatafordiagnosingandcuringstyloidprocesssyndrome.〔Method〕Totally100volunteerswithnormalstyloidprocessesunderwent16slicespir
4、alCT(MSCT)・Basedontheinitialdatum,4kindsofpostprocessingincludingmultiplcplanarreconstruction(MPR),curveplanarreconstruction(CPR),surfaceshadeddisplay(SSD)andvolumerendering(VR)wereperformed.Thelengthandinclinationangleofstytoidprocessesweremeasured.Thedistanceofbetweensty
5、loidprocessesandcarotidcanalexternalapertureJugularforamen,stylomastoidforamen,mastoidprocess,internalcarotidarteryandinternaljugularveinweresurveyed.〔Result〕Theaveragelengthofstyloidprocesseswas24.51mm±3.05mm,leftwas24.33mm±3.15mmandrightwas24.69mm±2.95mm.Theanteriorincli
6、nationanglewas19.35±2.92°andmedialwas24.00°士4.07°.Thedistanceofbetweenstyloidprocessesandcarotidcanalexternalaperture,jugularforamen,stylomastoidforamen,mastoidprocess,internalcarotidarteryandinternaljugularveinwere8.53mm±2.45mm,2.87mm±0.88mm,2.34mm±0.74mm,17.23mm±1.85mm,6
7、.49mm±l.58mmand3.70mm±l.46mmrespectivcly.〔Conclusion〕SixteensliceSpiralCTpostprocessingdemonstratethestytoidprocessesinvivoaccuratelyandfully,amongwhichmultipleplanarreconstructionandsurfaceshadeddisplayaremorevaluable,becausetheycanevaluatethelengthandinclinationofthestyl
8、oidprocessesandthedistancebetweentheprocessesandtheirsurroundingstructuresinvivomoreaccur
