简介：摘要在口腔医学领域中，对于咬合关系的分析和记录一直是重点。以往用的分析咬合关系的方法包括咬合纸染色法、蜡片法以及T-Scan咬合分析系统等，这些都是检测咬合关系的方法。但是经过临床应用比较发现，T-Scan系统更显优越性，它能够精确地检测出咬合接触的力和时间及其两者之间的对应关系，从而对咬合接触情况做动态的定量分析，现已成为口腔研究中一项重要的咬合分析工具。本文就T-Scan系统的特点及其在临床使用中的综合情况做一概述，为以后T-Scan咬合分析系统更好更有效的应用提供参考依据。

简介：摘要目的检测一种利用牙冠宽度和虚拟模型咬合接触信息区分T-Scan咬合接触图牙位分区方法的准确性和可重复性。方法招募20名正畸治疗后患者，分别制取牙列石膏模型和用T-scan Ⅲ咬合分析仪记录牙尖交错位的咬合，方法1：用游标卡尺测量模型的牙冠宽度，按照冠宽设置T-scan结果图的牙位分区；方法2：受试者接受咬合纸检查并拍摄上牙弓面照片，以冠宽为基础，结合咬合纸印记设置牙位分区；方法3：进行模型扫描，数据导入Geomagic软件测量0.4 mm颌间距离内的接触区，以冠宽为基础，结合虚拟接触区设置牙位分区。统计每一种方法各个牙位的咬合力百分比，重复测量3次。用组内相关系数(intraclass correlation coefficient, ICC)分析重复测量的一致性，记录方法1中接触区超出牙弓远中界的比例，以方法2的结果作为真实参考，用Friedman检验分析三种方法测量结果的差异性并两两比较。结果三种设置T-scan牙位分区的方法均有很高的重复测量信度(ICC>0.9)，方法1中65%的T-scan接触区超出牙弓，方法1的测量结果与方法2、3存在差异(P<0.001)，方法2与方法3无统计学差异。结论依据冠宽和虚拟接触区进行T-scan牙位划分是一种较准确、可重复性很高的方法，仅依据冠宽区分T-scan牙位的方法准确性不佳。

简介：采用多线程方式对指定IP地址段（或单机）进行安全漏洞检测．支持插件功能．提供了图形界面和命令行两种操作方式．扫描内容包括：远程操作系统类型及版本．

简介：Thesingle-shotspiralmagneticresonanceimaging(MRI)techniquewasimplementedandoptimizedonaBrukerBiospec47/30scanner.Thetechniqueincludesthepulsesequenceforgenerationanddetectionofthek-spaceMRIsignal(freeinductiondecay(FID)),andPC-basedprogramsforthedatagridandimagereconstruction.Thetemporalresolutionis70ms(14imagespersecond),whichconsistsofadataacquisitiontimeasshortas13.7ms,aspin-echotimeof13.6msandamagnetizationrecoverytimeof43ms.Thismakesitpossibletotakereal-timeimagesofmovingobjects.Thetechniqueisdemonstratedusingapendulum(tube)filledwithwater.

简介：AbstractThe aim of this paper is to discuss the risk of recurrence in patients with differentiated thyroid cancer and emphasize the importance of risk-group stratification, early recurrence identification and application of new imaging modalities, what is the PET-CT. Moreover, follow-up of patients with thyroid carcinoma should be carried out by specialized teams throughout life. Therefore, interdisciplinary case discussions in tumor conferences may improve the use of multimodal therapy especially in patients with poorly differentiated thyroid carcinomas. After baseline follow-up, if there is a suspicion of thyroid carcinoma, early PET-CT should be used for early detection and appropriate planning. Fortunately, due to the good localization possibility, the PET-CT enables a focused surgical procedure with avoidance of an unnecessary tumor search and thereby a reduction of the risk of injury of neighboring structures which is a concern with reoperative neck surgery.

简介：Ensuringahighmanufacturingtestqualityofanintegratedelectroniccircuitmandatestheapplicationofalargevolumetestset.Evenifthetestdatacanbefitintothememoryofanexternaltester,theconsequentincreaseintestapplicationtimereflectsintoelevatedproductioncosts.Testdatacompressionsolutionshavebeenproposedtoaddressthetesttimeanddatavolumeproblembystoringanddeliveringthetestdatainacompressedformat,andsubsequentlybyexpandingthedataon-chip.Inthispaper,weproposeascancellpositioningmethodologythataccompaniesacompressiontechniqueinordertoboostthecompressionratio,andsquashthetestdataevenfurther.Whilewepresenttheapplicationoftheproposedapproachinconjunctionwiththefan-outbaseddecompressionarchitecture,thisapproachcanbeextendedforapplicationalongwithothercompressionsolutionsaswell.Theexperimentalresultsalsoconfirmthecompressionenhancementoftheproposedmethodology.

简介：Multi-beamSonarandSide-scanSonarcompensateeachother.Inordertofullyutilizeallinformation,itisnecessarytofusetwokindsofimageanddata.Andtheimageco-registrationisanimportantandcomplicatedjobbeforefusion.Thispapersuggestscombiningbathymetricdatawithintensityimage,obtainingthecharacteristicpointsthroughtheminimalanglesoflines,andthendecidingthecorrespondingimagepointsbythemaximalcorrelatecoefficientinsearchingspace.Finally,thesecondorderpolynomialisappliedtothedeformationmodel.Aftertheimageshavebeenco-registered,Waveletisusedtofusetheimages.Itisshownthatthisalgorithmcanbeusedintheflatseafloorortheisotropicseabed.Verificationismadeinthepaperwiththeobserveddata.

简介：目的：为了决定骨头扫描调查什么时候在无征状的人是适当的，与前列腺癌症诊断了。方法：在2005年11月和2006年7月之间，有前列腺癌症的317个人经历了骨头扫描研究；176个人完成了包括标准。象univariate一样并且多的前列腺特定的抗原(PSA)cut-offs逻辑回归用数字直肠的检查分析发现的变量，活体检视格利森分数和年龄被执行决定骨头扫描研究什么时候是可能的具有价值。结果：有浆液PSA≤的仅仅1/61人(1.6%)20ng/mL有积极骨头扫描。然而，有浆液PSA20.1的2/38人(4.7%)40.0ng/mL，有浆液PSA40.1的3/20人(15%)60.0ng/mL，有浆液PSA60.1的7/19人(36.8%)有浆液PSA>的100.0个ng/mL和19/38人(50%)100.0ng/mL有积极骨头扫描。Univariate并且多变量逻辑回归分析是在这些组的uninformative。结论：基于我们的调查结果，骨头扫描具有在介绍PSA≤的无征状的前列腺癌症病人的有限价值20ng/mL。因此，除非药品治疗被思考，这调查能被消除。而且，发现的数字直肠的检查，活体检视格利森分数和年龄在预言可能怀有骨头转移的那些是不起帮助作用的。

简介：Thispaperpresentsaflexibleandhighspeeddigitalscanconverter(DSC)withtheabilitytohandlehighfrequencyultrasoundimaginginreal-time.Thecharacteristicsinimagingsystemsuchasfocuslengthoftransducer,theswingradiusandsamplinglengthetc.couldbechangedeasilyincompliancewiththeresearcher'sapplicationbasedonthisflexibledigitalscanconverter.Linearinterpolationisemployedtoachievethecoordinatetransformationsalgorithm.Custom-builtsoftwareisprogrammedtopreliminarilyhandlethealgorithmaccordingtodifferentultrasoundimagingapplications.HighperformanceFPGAwillimplementhighspeedinterpolationcalculationbasedonthepreliminarydatawhicharestoredintheDDR2SDRAMfromthesoftware.64bit66MHzPCIisemployedtoaccomplishhighspeeddatatransmission.Experimenthasshownthatmorethan500frameratecouldbeachievedbasedonthishighspeeddigitalscanconverter.ThedesignedflexibleandhighspeeddigitalscanconvertercouldbeusedincurrentFPGAbasedhighfrequencyultrasoundimagingsystem.

简介：Anefficientdesign-for-testability(DFT)techniqueisproposedtoachievelowoverheadforscan-baseddelayfaulttesting.Existingtechniquesfordelaytestsuchasskewed-loadorbroadsidemakethetestgenerationprocesscomplexandproducelowercoverageforscan-baseddesignsascomparedwithnon-scandesigns,whereastechniquessuchasenhanced-scantestcanmakethetesteasybutneedanextraholdinglatchtoaddsubstantialhardwareoverhead.Anewtri-stateholdinglogicispresentedtoreplacethecommonholdinglatchinenhanced-scantesttogetasubstantiallowhardwareoverhead.Thisschemecanachievelowdelayoverheadbyavoidingtheholdinglatchonthecriticaltimingscanpath.What’smore,thismethodcanalsokeepthestateandsignalactivityinthecombinationalcircuitfromthescanduringdatascan-inoperationtoreducethepowerdissipation.ExperimentresultsonasetofISCAS89benchmarksshowtheefficiencyoftheproposedscheme.

简介：ZhouShuhua,China'sBestMatchmakerZhouShuhua,wholivesinShenyang,becameavolunteerafterretirementin1983.For30years,shehashelpedthecommunitytohandleproblemsrelatedwiththe

简介：PhasescanapplicationisveryimportantsoftwareforADSLinacbeamtuning.Thescan/measuretoolsinOpenXALwasusedpreviously.Inordertoimprovethescanningefficiency,anewphasescanapplicationwasdeveloped.ThePythonwasselectedastheprogramminglanguagetomakethedevelopmenteasier.

简介：

简介：

简介：

简介：用非线性分析的方法讨论了方程N（t）=N（t）[a（t）-∑ni=1bi(t)Ni(t-τi（t）)]的周期正解的存在性，所获结果包含或推广了已有的几上结论[2，3]。

简介：Objective:TheobjectiveofthisstudywastoexaminetheeffectofhypothyroidismonhearingfunctioninpatientssurgicallytreatedfordifferentiatedthyroidcancerandsubsequentlyexperiencedhypothyroidismduringpreparationforfollowupI-131scintigraphyscanbyeitherrecombinanthumanthyroidstimulatinghormone(rhTSH)treatmentorthyroidhormonewithdrawal(THW).Methods:Atotalof55patientsundergoingI-131scintigraphyscanfollowingsurgeriesfordifferentiatedthyroidcancerwereincludedinthestudy,including25patientspreparedbyadministrationofrecombinantTSH(rhTSHGroup)and30patientsbythyroidhormonewithdrawal(THWGroup).Results:Airconductionthresholdsat1,2and4kHzforbothearswerehigherduringhypothyroidperiodthanduringeuthyroidperiodforpatientsintheTHWgroup(p<0.05)butnotforpatientsintherhTSHgroup.Conclusion:Sensorineuralhearinglosswasdetected,especiallyatlowfrequencies,inpatientswithDTCaftersurgicaltreatmentwhosehormonereplacementtherapywaswithdrawnbutnotinthosereceivingrhTSH.ItisthereforepreferredtouserhTSHwhenpreparingforI-131scintigraphyscaninpatientsatriskforhearingloss.

简介：

简介：

简介：Vestibularschwannoma(VS)isaslow-growingbenignneoplasm.TherehasbeenanevolutioninthemanagementofVSfromactivetreatments(microsurgeryandstereotacticradiotherapy)toconservativemanagement(waitandscan).RegularMRIscanningisnecessarytomonitortumorprogression.Conservativemanagementcausessignificantlylesscomplicationsandoffersahigherqualityoflifecomparedwithactivetreatments.ThemeangrowthrateofVSvariesfrom0.4to2.9mm/year,andspontaneousshrinkageisobservedin3.8percentoftumorsduringobservation.Ifsignificantgrowthoccurs,activetreatmentisconsidered.Significantgrowthisdefinedasanincreaseofatleast3mminthelargestextrameataldiameterinanyplanebetweenthefirstandlastavailablescans.Thevestibulocochlearnerveissurroundedbycerebrospinalfluid,whichprovidesnaturalcontrastforMRI;thus,gadoliniummaynotbeneededtodetectVS.Specificsequenceshavehighsensitivity,specificity,andaccuracyfordetectionofprogression.HypointensesignalintheipsilateralinnerearfluidmightbeausefulsigntodistinguishVSfrommeningioma.Inthispaper,wesummarizethecurrentstatusofresearchonconservativemanagementandnon-contrastMRIforthedetectionofVS.