学科分类
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8 个结果
  • 简介:某些疾病被知道引起变化在物理并且房间的biomechanical性质。这些在其它之中包括癌症,疟疾,和镰刀房间贫血症。典型地,如此的物理性质变化能导致房间僵硬的几褶层增加或减少,它是重要的并且能导致严重病理和最终的灾难的故障身体功能。当有时开发了生物化学、生物的试金检测疾病的发作或存在,总是有需要开发更快速、精确、敏感的方法检测并且诊断疾病。Biomechanical性质变化能起一个重要作用在这方面。因此,对疾病biomechanics的研究不能仅仅给我们位于疾病前进下面的机制的深入的知识,但是能也为察觉和诊断用作一个强大的工具。这篇文章提供一些卓见进机会因为在疾病的发作或前进期间在细胞的机械性质换掉怎么重要,能为察觉和诊断作为有用工具被利用。我们将也展示已经被开发了执行如此的察觉和诊断的几种技术。

  • 标签: 生物力学特性 疾病诊断 细胞 应用 人类 物理性质
  • 简介:AIM:Toinvestigatethediagnosticaccuracyofthemeanplateletvolumeandplateletdistributionwidthinacuteappendicitis.METHODS:Thisretrospective,case-controlledstudycompared295patientswithacuteappendicitis(Group?Ⅰ),100patientswithotherintra-abdominalinfections(GroupⅡ),and100healthyindividuals(GroupⅢ)betweenJanuary2012andJanuary2013.Theage,gender,andwhitebloodcellcount,neutrophilpercentage,meanplateletvolume,andplateletdistributionwidthvaluesfrombloodsampleswerecomparedamongthegroups.StatisticalanalyseswereperformedusingSPSSforWindows21.0software.Inaddition,thesensitivity,specificity,positiveandnegativepredictivevaluesandlikelihoodratios,anddiagnosticaccuracywerecalculated.RESULTS:Themeanagesofpatientswere29.9±12.0yearsforGroup?Ⅰ,31.5±14.0yearsforGroupⅡ,and30.4±13.0yearsforGroupⅢ.Demographicfeaturessuchasageandgenderwerenotsignificantlydifferentamongthegroups.Whitebloodcellcount,neutrophilpercentageandplateletdistributionwidthweresignificantlyhigherinGroup?Ⅰ?comparedtogroupsⅡandⅢ(P<0.05).Diagnostically,thesensitivity,specificityanddiagnosticaccuracywere73.1%,94.0%,and78%forwhitebloodcellcount,70.0%,96.0%,and76.0%forneutrophilpercentage,29.5%,49.0%,and34.0%formeanplateletvolume,and97.1%,93.0%,and96.0%forplateletdistributionwidth,respectively.ThehighestdiagnosticaccuracydetectedwasforplateletdistributionwidthbetweenGroup?Ⅰ?andGroupⅢ(P<0.01).CONCLUSION:Plateletdistributionwidthanalysiscanbeusedfordiagnosisofacuteappendicitiswithoutrequiringadditionaltests,thusreducingthecostandlossoftime.

  • 标签: APPENDICITIS DIAGNOSIS PLATELET FUNCTION TEST Plat
  • 简介:Epithelialovariancancer(EOC)istheleadingcauseofdeathamongallgynecologicalmalignancies.Despitethetechnologicalandmedicaladvancesoverthepastfourdecades,suchasthedevelopmentofseveralbiologicalmarkers(mRNAandproteinsbiomarkers),themortalityrateofovariancancerremainsachallengebecauseofitslatediagnosis,whichisspecificallyattributedtolowspecificitiesandsensitivities.Underthiscompulsivescenario,recentadvancesinexpressionbiologyhaveshiftedinidentifyinganddevelopingspecificandsensitivebiomarkers,suchasmicroRNAs(miRNAs)forcancerdiagnosisandprognosis.MiRNAsareanovelclassofsmallnon-codingRNAsthatderegulategeneexpressionattheposttranscriptionallevel,eitherbytranslationalrepressionorbymRNAdegradation.Thesemechanismsmaybeinvolvedinacomplexcascadeofcellulareventsassociatedwiththepathophysiologyofmanytypesofcancer.MiRNAsareeasilydetectableintissueandbloodsamplesofcancerpatients.Therefore,miRNAsholdgoodpromiseaspotentialbiomarkersinovariancancer.Inthisreview,weattemptedtoprovideacomprehensiveprofileofkeymiRNAsinvolvedinovariancarcinomatoestablishmiRNAsasmorereliablenon-invasiveclinicalbiomarkersforearlydetectionofovariancancercomparedwithproteinandDNAbiomarkers.

  • 标签: 生物标志物 肿瘤诊断 卵巢癌 预后 MIRNAS 开发
  • 简介:Bell’spalsyisacommonlyseencranialnervediseaseandcanresultincompromisedfacialappearanceandfunctions.Itsetiology,prognosisandtreatmentarestillbeingdebated.Thispaperisareviewofrecentdevelopmentintheunderstandingofetiology,diagnosisandnon-surgicaltreatmentofBell’spalsy.

  • 标签: FACIAL PARALYSIS NON-SURGICAL treatment STEROIDS
  • 简介:平常的微分方程颂诗广泛地被使用确定HIV病毒的动力学。从吵闹的数据估计颂诗参数有趣却挑战性,特别数据有一些孤立点。在这研究,作者使用吝啬的移动孤立点模型MSOM基于颂诗的二拍子的圆舞评价在HIV模型检测孤立点。为移动参数的近似公式被导出。而且,20个测试统计数值被构造,它的接近的分发被建立。模拟结果显示出那:1边界点相对内部点在参数评价上有更多的影响。2建议过程能有效地检测孤立点。作者从HIV临床的试用用一个申请例子说明建议途径并且发现到模拟的类似的模式学习。

  • 标签: 均值漂移模型 艾滋病毒 统计诊断 常微分方程 离群点检测 两步估计
  • 简介:Superficialnon-ampullaryduodenalepithelialtumor(SNADET)isdefinedasasporadictumorthatisconfinedtothemucosaorsubmucosathatdoesnotarisefromVater’spapilla,anditincludesadenomaandadenocarcinoma.Recentdevelopmentsinendoscopictechnology,suchashigh-resolutionendoscopyandimage-enhancedendoscopy,mayincreasethechancesofdetectingSNADETlesions.However,becauseSNADETisrare,littleisknownaboutitspreoperativeendoscopicdiagnosis.TheuseofendoscopicresectionforSNADET,whichhasnoriskofmetastasis,isincreasing,buttheincidenceofcomplications,suchasperforation,issignificantlyhigherthaninanyotherpartofthedigestivetract.Apreoperativediagnosisisrequiredtodistinguishbetweenlesionsthatshouldbefollowedupandthosethatrequiretreatment.Retrospectivestudieshaverevealedcertainendoscopicfindingsthatsuggestmalignancy.Inrecentyears,severalnewimagingmodalitieshavebeendevelopedandexploredforrealtimediagnosisoftheselesiontypes.EstablishinganendoscopicdiagnostictooltodifferentiatebetweenadenomaandadenocarcinomainSNADETlesionsisrequiredtoselectthemostappropriatetreatment.ThisreviewdescribesthecurrentstateofknowledgeaboutpreoperativeendoscopicdiagnosisofSNADETs,suchasduodenaladenomaandduodenaladenocarcinoma.Newerendoscopictechniques,includingmagnifyingendoscopy,mayhelptoguidethesediagnostics,buttheiradditionaladvantagesremainunclear,andfurtherstudiesarerequiredtoclarifytheseissues.

  • 标签: ENDOSCOPY Duodenoscopy DUODENAL NEOPLASMS NARROW b
  • 简介:Objective:Todeterminethevalueofdiffusion-tensorimaging(DTI)asanadjuncttodynamiccontrastenhancedmagneticresonanceimaging(DCE-MRI)forimprovedaccuracyofdifferentialdiagnosisbetweenbreastductalcarcinomainsitu(DCIS)andinvasivebreastcarcinoma(IBC).Methods:TheMRIdataof63patientspathologicallyconfirmedasbreastcancerwereanalyzed.TheconventionalMRIanalysismetricsincludedenhancementstyle,initialenhancementcharacteristic,maximumslopeofincrease,timetopeak,timesignalintensitycurve(TIC)pattern,andsignalintensityonFST2WI.Thevaluesofapparentdiffusioncoefficient(ADC),directionally-averagedmeandiffusivity(Davg),exponentialattenuation(EA),fractionalanisotropy(FA),volumeratio(VR)andrelativeanisotropy(RA)werecalculatedandcomparedbetweenDCISandIBC.MultivariatelogisticregressionwasusedtoidentifyindependentfactorsfordistinguishingIBCandDCIS.Thediagnosticperformanceofthediagnosisequationwasevaluatedusingthereceiveroperatingcharacteristic(ROC)curve.ThediagnosticefficaciesofDCEMRI,DWIandDTIwerecomparedindependendyorcombined.Results:EAvalue,lesionenhancementstyleandTICpatternwereidentifiedasindependentfactorfordifferentialdiagnosisofIBCandDCIS.ThecombinationdiagnosisshowedhigherdiagnosticefficacythanasingleuseofDCE-MRI(P=0.02),andtheareaofthecurvewasimprovedfrom0.84(95%CI,0.67-0.99)to0.94(95%CI,0.85-1.00).Conclusions:QuantitativeDTImeasurementasanadjuncttoDCE-MRIcouldimprovethediagnosticperformanceofdifferentialdiagnosisbetweenDCISandIBCcomparedtoasingleuseofDCE-MRI.

  • 标签: 磁共振成像 鉴别诊断 扩散张量 乳腺癌 MRI 浸润性