简介：通过测试和分析此较SiO2·Al2O3·CaO·CaF2·P系统玻璃及其经酸处理前后的FTIR光谱,研究经酸处理前后玻璃结构变化.当玻璃组成中不含氟时,酸洗前后,其红外光谱形态几乎无变化,而当其组成中含氟时,最强谱带出现明显的分裂,且相对强度发生明显的改变,在～1086cm-1和～1024cm-1或～996cm-1处谱带的出现和相对强度的改变,表明在玻璃粉表面存在两相,即纯硅酸盐相和铝硅酸盐相,酸洗使玻璃颗粒表面形成不完全的硅凝胶包裹层,表明玻璃组成中含氟时,玻璃结构分相形成易于酸析相和不易酸析相.

简介：Interactivepickingisafundamentaltaskforprocessingdigitalgraphicsandimages.Combiningtwo-dimensional(2D)andthree-dimensional(3D)viewsisanimportanttrendinprocessingmedicalsliced-geometries.Withthegoalofaccuratelypickingpointsinsliced-geometries,wepresentamethodtopickpointsinteractivelybycombining2Dand3Dviewsofsliced-geometries.Fourviewwindowsareconstructedtorendersliced-geometriesusingmedicalimaginginteractiontoolkit(MITK):threefor2DslicesparalleltotheXY,YZ,andXZplanesandoneforsurfacerendering.Pointspickedinaviewwindowcanberenderedandmodifiedinanywindow.Afterapointispicked,itisimmediatelyconvertedintoaworldcoordinateandstored.Pointsareonlyrenderedandmodifiedbasedontheirworldcoordinates.Thispickingmethodcanbeusedforfitting,observing,andmeasuringlocalregions.Thismethodcanalsobeusedforinteractivesegments.Ourexperimentshowsthatthepickingmethodisaccurateandhasareal-timepickingeffect.

简介：Totesttheaccuracyofanewfingerprintscanner,researcherstypicallyrunmillionsofknownfingerprintimagesthroughthesystem'smatchingsoftware.Butthistestingprocedurecan'tquitemimicrealoperatingconditions,asa2-Dimagefedintoaprogramisfundamentallydifferentthana3-Dfingerpressedtoasensor.

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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：在生物医学的图象数据的显示，操作和分析的进程，他们通常需要通过插值的进程被变换成各向同性的discretization的数据，当立方的卷绕旋转插值广泛地由于它在计算费用和精确性之间的好折衷被使用时。在这份报纸，我们在场为3D的一个整个概念医药图象插值基于立方的卷绕旋转，和六个方法与不同锋利的控制参数，它在细节被提出。而且，我们也与不同的片间距用数据集合为这些方法给客观比较。在这些数据集合的每片被每个插值方法并且与原来的片相比用三项措施估计：摆平平均数的差别，争论的地点的数字，和最大的差别。根据试验性的结果，我们在场为3D的一个建议在不同状况下面的医药图象最后。

简介：据JohnsonBN2015年9月18日（AdvancedFunctionalMaterials,2015.doi：10.1002/adfm.2015017.）报道,美国明尼苏达大学、普林斯顿大学研究人员发现3D打印技术或许有助于神经系统修复。神经系统疾病一直是困扰着医学工作者的一个难题。其中神经元的损伤是导致神经系统疾病的重要诱因。因此,如果要治疗这些疾病,如何修复受损神经元就成为了摆在科学家面前的头号难题。一直以来,人们都在寻找有效方法来促使受损神经元再生。研究人员在小鼠实验中证实了这一想法。利用3D扫描获得了小鼠坐骨神经的轮廓,然后再利用3D打印技术打造出了一个内含能够促进神经元再生化学成分的硅酮类支架。

简介：Curcumin,adietaryphytochemical,exhibitsmultifunctionalnaturalproductwithregulatoryeffectsoninflammation.However,thepoorbioavailabilitylimitsitsclinicalapplications.Thus,wedesignedandsynthesizedanovelmonocarbonylanalogueofcurcuminB7andtheirinhibitionagainstmonocytechemotacticprotein-1（MCP-1）andinterleukin-8（IL-8）releasewasevaluatedinH2O2-stimulatedhumanvascularendothelialcells（ECs）inadose-responsivemanner,whileexhibitingnocytotoxicityinECs.Takentogether,theseinsightsonthenovelcompoundB7mayserveaspotentialagentsforthetreatmentofatherosclerosis.

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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.

简介：MatthiasLtitolfandhisPhDstudent,twoscientistsattheEPFL＇sInstituteofBioengineering,havedevelopedanewtechniqueforusinglaserstocarvepathwaysinhydrogelscaffoldsina3Dcellcultureenvironmenttocontrolthegrowthoftheculture.

简介：Segmentingwholeheartfromcardiaccomputedtomography(CTimagescanprovideanimportantbasisfortheevaluationofcardiacfunctionandhelpimprovetheaccuracyofclinicaldiagnosis.Manualsegmentationisthemostaccuratemethodforcardiacsegmentation.Butitistimeconsumingandnotsufficientlyreproducible.However,cliniciansstillrelyonthismethodinpracticalapplications.Soafullyautomaticmethodisneededtoimprovethesegmentationefficiency.Thispapeproposesaregistration-basedautomaticapproachforthree-dimensional(3DsegmentationofcardiacCTimages.TheproposedmethodutilizesthesimilarityocardiacCTimagesbetweendifferentindividuals,andusesregistrationtoachievethesegmentation.Affinetransformationisfirstlyimplementedtoachieveglobalcoarseregistration.Then,cubicB-splinesareusedtorefinethelocaldetailsinlocallyaccurateregistration.Mutualinformation(Ml)isusedasthesimilaritymeasure,andadaptivestochasticgradientdescent(ASGD)astheoptimizationalgorithm.Oumethodisappliedtothedual-sourcecardiacCTimagestosegmentwholeheartExperimentalresultsshowthattheproposedmethodcanautomaticallysegmentwholeheartfromcardiacCTimages.

简介：Detrendedfluctuationanalysis(DFA)isfitforstudiesonthelong-rangeexponentialcorrelationofnon-stationarytimeserial.Inthispaper,inordertofindahypoxiaadaptabilityevaluationcriterion,theheartrateandSaO2signalsareanalyzedbythismethod.Thedemarcateexponentaboutfit-good-groupandfit-bad-groupinhypoxiaandnormalairarecalculatedandcompared.Theresultshowsαisdifferentindifferentsituation,theαinhypoxiaismuchhigherthanαofbreathinnormalair.Andαoffit-good-groupishigherthanfit-bad-group.ItshowsthatDFAcouldbeagoodcriteriontoanalyzehypoxiaadaptability,whichisusefulintheanalysisofhypoxiaphysiologysignal.

简介：Thispaperproposesapracticalalgorithmsofplanecutting,stereoclippingandarbitrarycuttingfor3Dsurfacemodelreconstructedfrommedicalimages.Inplanecuttingandstereoclippingalgorithms,the3Dmodeliscutbyplaneorpolyhedron.Listsofedgeandvertexineverycutplaneareestablished.Fromtheseliststheboundarycontoursarecreatedandtheirrelationshipofembraceisascertained.TheregionclosedbythecontoursistriangulatedusingDelaunaytriangulationalgorithm.Arbitrarycuttingoperationcreatescuttingcurveinteractively.Thecutmodelstillmaintainsitscorrecttopologystructure.Withtheseoperations,tissuesinsidecanbeobservedeasilyanditcanaiddoctorstodiagnose.Themethodscanalsobeusedinsurgeryplanningofradiotherapy.

简介：现将我院收治2例静脉滴注环丙沙星致过敏反应的体会报告如下。1资料1.1女,62岁,因肺癌住院。入院术后第一天查体:T36.8℃,胸腔引流通畅,刀口无渗出、渗血,右肺呼吸音尚可,患者尿量较少,约600毫升/每日。医嘱:5％GNS500ml+血速宁2.0g,（?）drip;环丙沙星注射液批号:（980511）100ml×0.2（?）dripbid;5％葡萄糖注射液500ml,维生素C2.0g,维生素B60.2g,⑦dripq.d,等。先滴注环丙沙星注射液100ml,

简介：目的观察血浆灌流治疗重型肝炎伴银屑病及服用治疗银屑病药物导致严重肝损伤的治疗效果,总结经验。方法河南省传染病医院肝病科2009年10月-2010年8月3例重型肝炎伴银屑病患者,均为男性,年龄36-48岁,平均年龄43.9岁;其中1例服用自制治疗银屑病药物导致严重肝损伤。对其进行血浆灌流治疗,治疗期间未用任何治疗银屑病药物,在常规护肝药物治疗基础上,予以HB-H-6树脂吸附胆红素血浆灌流3-4次,每次间隔2-4d,治疗前及每次治疗结束后评估患者皮损及肝功能情况并进行对比。结果3例患者经3-4次血浆灌流治疗,银屑病症状明显改善,肝功能明显好转。结论血浆灌流不仅能治疗重型肝炎,对银屑病也有很好的治疗效果,可能成为银屑病新的治疗手段。

简介：目的探讨3D打印辅助改良Stoppa入路治疗骨盆骨折疗效分析。方法2016年2月至2016年12月我科应用3D打印结合改良的Stoppa入路治疗骨盆骨折12例，其中平均年龄38.5岁，男性8例，女性4例，根据Tile分型：B1型4例，B2型4例，B3型1例，Cl型2例，C2型1例。结果平均手术时间75min(50～125)min,平均出血量350mL(150～500)mL。术后根据Matta标准评分优10例，良2例，3月后随访所有患者骨折完全愈合，髋关节功能良好，无内固定损伤断裂，无大腿麻木等神经损伤症状，无腹股沟疝，下肢不等长，深静脉血栓形成等并发症。结论3D打印辅助改良Stoppa入路治疗骨盆骨折可以缩短手术时间，降低出血量，减少并发症等优点，但在一定程度上增加患者经济负担。

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简介：据BelgardtBF2015年6月20日[NatMed，2015,21（6）：619-627.]报道，小RNA（microRNA-200家族）与胰岛B细胞的存活和糖尿病的形成存在着很大关联。