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  • 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.

  • 标签: Thyroid Thyroidectomy PET-CT Thyroid cancer Recurrence
  • 简介:Ensuringahighmanufacturingtestqualityofanintegratedelectroniccircuitmandatestheapplicationofalargevolumetestset.Evenifthetestdatacanbefitintothememoryofanexternaltester,theconsequentincreaseintestapplicationtimereflectsintoelevatedproductioncosts.Testdatacompressionsolutionshavebeenproposedtoaddressthetesttimeanddatavolumeproblembystoringanddeliveringthetestdatainacompressedformat,andsubsequentlybyexpandingthedataon-chip.Inthispaper,weproposeascancellpositioningmethodologythataccompaniesacompressiontechniqueinordertoboostthecompressionratio,andsquashthetestdataevenfurther.Whilewepresenttheapplicationoftheproposedapproachinconjunctionwiththefan-outbaseddecompressionarchitecture,thisapproachcanbeextendedforapplicationalongwithothercompressionsolutionsaswell.Theexperimentalresultsalsoconfirmthecompressionenhancementoftheproposedmethodology.

  • 标签: 测试数据压缩 扫描单元 输出网络 细胞定位 外部存储器 测试应用
  • 简介:Multi-beamSonarandSide-scanSonarcompensateeachother.Inordertofullyutilizeallinformation,itisnecessarytofusetwokindsofimageanddata.Andtheimageco-registrationisanimportantandcomplicatedjobbeforefusion.Thispapersuggestscombiningbathymetricdatawithintensityimage,obtainingthecharacteristicpointsthroughtheminimalanglesoflines,andthendecidingthecorrespondingimagepointsbythemaximalcorrelatecoefficientinsearchingspace.Finally,thesecondorderpolynomialisappliedtothedeformationmodel.Aftertheimageshavebeenco-registered,Waveletisusedtofusetheimages.Itisshownthatthisalgorithmcanbeusedintheflatseafloorortheisotropicseabed.Verificationismadeinthepaperwiththeobserveddata.

  • 标签: 声纳图像 图像融合 数据处理 海洋测深数据 海底 侧向扫描声纳
  • 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。

  • 标签: 前列腺癌 骨扫描 无症状 抗原性
  • 简介:Thispaperpresentsaflexibleandhighspeeddigitalscanconverter(DSC)withtheabilitytohandlehighfrequencyultrasoundimaginginreal-time.Thecharacteristicsinimagingsystemsuchasfocuslengthoftransducer,theswingradiusandsamplinglengthetc.couldbechangedeasilyincompliancewiththeresearcher'sapplicationbasedonthisflexibledigitalscanconverter.Linearinterpolationisemployedtoachievethecoordinatetransformationsalgorithm.Custom-builtsoftwareisprogrammedtopreliminarilyhandlethealgorithmaccordingtodifferentultrasoundimagingapplications.HighperformanceFPGAwillimplementhighspeedinterpolationcalculationbasedonthepreliminarydatawhicharestoredintheDDR2SDRAMfromthesoftware.64bit66MHzPCIisemployedtoaccomplishhighspeeddatatransmission.Experimenthasshownthatmorethan500frameratecouldbeachievedbasedonthishighspeeddigitalscanconverter.ThedesignedflexibleandhighspeeddigitalscanconvertercouldbeusedincurrentFPGAbasedhighfrequencyultrasoundimagingsystem.

  • 标签: 数字扫描变换器 超声成像系统 转换器 高频 坐标转换算法 FPGA实现
  • 简介:Anefficientdesign-for-testability(DFT)techniqueisproposedtoachievelowoverheadforscan-baseddelayfaulttesting.Existingtechniquesfordelaytestsuchasskewed-loadorbroadsidemakethetestgenerationprocesscomplexandproducelowercoverageforscan-baseddesignsascomparedwithnon-scandesigns,whereastechniquessuchasenhanced-scantestcanmakethetesteasybutneedanextraholdinglatchtoaddsubstantialhardwareoverhead.Anewtri-stateholdinglogicispresentedtoreplacethecommonholdinglatchinenhanced-scantesttogetasubstantiallowhardwareoverhead.Thisschemecanachievelowdelayoverheadbyavoidingtheholdinglatchonthecriticaltimingscanpath.What’smore,thismethodcanalsokeepthestateandsignalactivityinthecombinationalcircuitfromthescanduringdatascan-inoperationtoreducethepowerdissipation.ExperimentresultsonasetofISCAS89benchmarksshowtheefficiencyoftheproposedscheme.

  • 标签: 增强扫描 延迟故障检测 低开销 可测试性设计 VLSI
  • 简介:ZhouShuhua,China'sBestMatchmakerZhouShuhua,wholivesinShenyang,becameavolunteerafterretirementin1983.For30years,shehashelpedthecommunitytohandleproblemsrelatedwiththe

  • 标签: 老年人 中国 夕阳 黄昏 扫描 婚姻
  • 简介:PhasescanapplicationisveryimportantsoftwareforADSLinacbeamtuning.Thescan/measuretoolsinOpenXALwasusedpreviously.Inordertoimprovethescanningefficiency,anewphasescanapplicationwasdeveloped.ThePythonwasselectedastheprogramminglanguagetomakethedevelopmenteasier.

  • 标签: PHASE SCAN APPLICATION
  • 简介:代数课本中指出:“在a>0时,|x|>a(?)x<-a或x>a;|x|0”。其实,这一等价性在a≤0时也同样成立。现证明如下:①当a=0吋,i|x|>a即|x|>0的解集显然是:x<0或x>0即x<-a或x>a。

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  • 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.

  • 标签: Hearing loss RECOMBINANT TSH Thyroid HORMONE
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  • 简介:通过变量代换对于形如a(x)y″(x)+b(x)y′(x)+c(x)y=0的函数系数二阶常微分方程,当系数函数满足一定条件时,可以化为二阶常系数齐次微分方程。

  • 标签: 变量代换 特征方程 微分方程
  • 简介:命题:若"{x≥a,x≤a,则x=a",体现了"相等"与"不等"的对立统一及其相互转化的关系.命题虽然十分简单,却在解答数学竞赛试题中发挥重要作用.本文举例介绍其应用.

  • 标签: 命题 应用 数学竞赛试题 对立统一
  • 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。

  • 标签: T-Scan系统 咬合分析 咬合力 牙合接触
  • 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.

  • 标签: VESTIBULAR SCHWANNOMAS Treatment Magnetic resonance imaging