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简介：胆囊结石是最常见的胆系疾病,B超对其诊断有着很高的敏感性,对胆囊内探及强回声光团,后方伴有声影,随体位变动而位移三特征的典型胆囊结石,B超诊断符合率可达95～97％,但对发生在特殊部位的特殊类型的胆囊结石,B超却易漏诊误诊,为引起同

简介：PACScanbeappliedinthenetworkarchitectureofClient/Server(C/S)andBrowser/Server(B/S)incurrentapplicationofhospitalinformationsystem.PACSViewerofB/Smodelisrealizedbymeansofthebrowsercommonly,butwebbrowserdoesnotsupportDICOMstandard.Inthisarticle,howtouseJavaApplettorealizethedisplayandoperationsofDICOMimageswillbediscussed.ThelightweightmethodtoviewDICOMimagesisveryfitfortelemedicaltreatment,andthesituationsnotrequirestrongabilityinimageoperations。

简介：由各种原因所致的腹腔积液患者282例,男112例,女170例,平均年龄45.2岁。用岛津SDL—310型及日立EUB—305型超声显像仪进行检查,并对部分患者做了血清蛋白测定。结果表明,不同积液在超声下内部回声不同。肝硬化、心肾疾病、营养不良所致漏出液,暗区透声性好,内部光点回声少。癌性腹水暗区内出现散在或密集光点回声,内可有分隔粘连。62例肝硬化腹水胆囊壁全部增厚,80.6％患者呈双边影;癌性腹水54例中63％不增厚。血清白蛋白测定,32例(80％)肝硬化患者小于30s/L,35例(87.5％)呈A/G倒置,而癌性腹水中32例(82.1％)大于30g/L。作者认为结合临床对腹腔积液的成因进行探讨,可提高腹腔积液诊断的临床符合率。

简介：ImagegeometrydistortionisanimportanttechnicalstandardinB-modeultra-sounddiagnosissystem.ThispaperinvestigatesthecauseofimagedistortioninphasedarrayB-modeultrasounddiagnosissystem.Thefirstdistortioncauseisthedelayerrorofcompoundwavebind.Phasedarrayultrasoundtranduceriscomposedofmanyrectangleunits.Withcontrollinginspiringplustime,ultrasoundwave

简介：ThispaperdealswiththetemperaturecorrelationofgrayscaleofBmodeultrasoundimagefromheatedtissue.Inthisstudy,manyin-vitrofreshpigliversareheatedinatemperaturerangefrom28℃to45℃,fromwhichaseriesofB-modeultrasonicimagesofliverswereobtained.Thegray-valueisevaluatedfromtheultrasoundimagesrespectively.Acorrelationofthemeangrayvalueoftheselectedregions(12×12pixels)inB-modeultrasonicimagesofliveranditstemperaturewaspointedout.Andtheexperimentresultsagreedtheevaluationwell.Anditispossibletomonitorthetissuetemperaturechanginginhyperthermiausingthiscorrelation.

简介：Bodysurfacepotentialmapping(BSPM)isarecentlydevelopednoninvisivecar-dioelectrophysiologicdiagnostictechnique.Thepurposeofthepresentstudyistoe-valuatetheefficacyandsignificanceofpercutaneoustransluminalcoronaryangioplas-ty(PTCA)usingaBSPM-Ⅲmodelcomputersystem.7patientswitheoronaryheartdiseasewerestudiedpriortoandfollowingPTCAusing98leadsBSPMwithspecial

简介：Objective:ThispaperistoexploreamethodoftransferringhumanSDF-1anditsmutantSDF-1/54intrakinegeneintoCOS-7cellsfordeterminingtheirexpressionandsubcelluarlocalizationofthefusionprotein.Thiscouldofferfeasibilityforinhibitingthemetastasisofmalignanttumorsbyphonotypicknockoutforblockingfunctionalexpressionofreceptoronthecell-surface.Methods:AmplifythetargetgenewithPCRfromtheconstructedplasimidSDF-WT-Gly×4-Dec/PET-30a(+)withaC-terminalretentionsignalfragmentKDEL.AfterthepcDNA3.1/SDF-1/KDEL,pcDNA3.1/SDF-1/54/KDEL,pEGFP/SDF-1/KDELandpEGFP/SDF-1/54/KDELeukaryoticexpressionvectorswereconstructedandtheDNAsequencewasaccurate,theyweretransferredintoCOS-7cellswithliposome.Theexogenousexpressionswereobserved,fusionproteinSDF-1/HisandSDF-1/54/HiswereconfirmedbyWesternblot,andtheSDF-1/EGFPandSDF-1/54/EGFPweredeterminedbyLaserScanningConfocalMicroscopy.Results:Fourexpressionvectorswereconstructedsuccessfully,thefusionproteinSDF-1/KDEL/HisandSDF-1/54KDEL/HisexpressedinCOS-7cells.SubcelluarlocalizationanalysisshowedthatSDF-1/KDEL/EGFPandSDF-1/54/KDEL/EGFPwerelocatedmainlyinendoplasmicreticulum.Conclusion:FourexpressionvectorspcDNA3.1/SDF-1/KDEL,pcDNA3.1/SDF-1/54/KDEL,pEGFP/SDF-1/KDELandpEGFP/SDF-1/54/KDELwereconstructedsuccessfully,whichcouldexpressineukaryoticcellandlocatemainlyintheendoplasmicreticulum.

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简介：临床上由心血管系统疾病引起的猝死最常见,其中以冠心病占首位,脂肪心引起猝死,国内文献报道较少。现将我院近年尸检中诊断的5例报告如下,并讨论其造成猝死的病理学基础。1临床资料1.1一般资料男性3例,女性2例,生前无明显症状,临床诊断困难,均为呼吸急促,突然心悸口唇紫绀、抽搐、猝死。

简介：分析肺癌术后72小时内发生的心律失常,探讨其发生的危险因素及预防措施.分析1995年～2001年肺癌手术360例,术后发生心律失常82例,选择年龄、术前心电图肺功能、其他慢性俣并疾病、手术方式及术后PCA镇痛与否等因素作为分析依据.结果高龄、术前心电图异常,肺功能低下,合并其他慢性疾病、全肺切除及术后疼痛是肺癌手术后发生心律失常的主要因素.结论术前积极治疗心脏原发病及其他慢性合并症.改善肺功能.纠正低血氧;良好的麻醉,术中术后保温,严格掌握全肺切除适应证;术后防治肺部并发症以及有效的术后镇痛是防止发生心律失常的主要措施.

简介：SincetheinventionofRubylaserbyMaimanin1960s,manykindsoflasersareusedwidelyindentistry.Ithasbeenprovedthatlaserirradiationcanproduceacidetchinglikesurface,thusstrengthenthebondofmaterialtoenamel.Buttheheatgeneratedduringirradiationproducesdamageondentalpulp,whichlimitsthelaserapplicationsondentalhardsurfaces.

简介：INTRODUCTIONHydrothermallysynthesized,nanograde,needle-shapeapatitecrystal(nanoapatite)issimilartohoneapatiteinmorphology,crystalstructure,compositionandcrystallinity,andprobablyhasbetterosteoconductivitythanbulkHAceramic.Butwhenthenanoapatiteisdriedinair,itcloggedtomicrometer-sizedapatiteparticles.

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简介：Inrecentyears,thevolumetricapproachof3Dreconstructionhasemergedasapowerfulclinicmethodforbiomedicalapplications.Thisapproachisbasedonavoxelrepresentedobjectwhichmaintainsmanydetailsofthesurfaceandtheinternalcon-structuresoftheoriginalbody.Becauseofahugeamountofdata,thevolumedatasettakesalargesizeofmemory,andahighprocessingspeedisrequiredinorderto

简介：Inordertoeliminatedisplacementandelasticdeformationbetweenimagesofadjacentframesincourseof3Dultrasonicimagereconstruction,elasticregistrationbasedonskeletonfeaturewasadoptinthispaper.Anewautomaticallyskeletontrackingextractalgorithmispresented,whichcanextractconnectedskeletontoexpressfigurefeature.Featurepointsofconnectedskeletonareextractedautomaticallybyaccountingtopicalcurvatureextremepointsseveraltimes.Initialregistrationisprocessedaccordingtobarycenterofskeleton.Whereafter,elasticregistrationbasedonradialbasisfunctionareprocessedaccordingtofeaturepointsofskeleton.Resultofexampledemonstratethataccordingtotraditionalrigidregistration,elasticregistrationbasedonskeletonfeatureretainnaturaldifferenceinshapefororgan'sdifferentpart,andeliminateslightelasticdeformationbetweenframescausedbyimageobtainedprocesssimultaneously.Thisalgorithmhasahighpracticalvalueforimageregistrationincourseof3Dultrasoundimagereconstruction.

简介：目的采用STAR踝关节假体进行大骨节病的终末治疗方法,探讨其疗效.方法2年间对3例5踝大骨节病进行全踝置换术,按McGure踝关节评分系统分别对术前、术后患者疼痛程度、踝关节功能、踝关节活动度进行综合评分.结果随访最长1.5年,最短6个月,该3例患者术后按McGuire评分,3踝优,2踝良,1例患者伤口延迟愈合,随访1.5年,未发现假体松动或下沉.结论全踝关节置换术可有效缓解踝关节疼痛、改善关节活动度,是治疗大骨节病的终末有效手段.