应用光电容积脉搏波测量动脉僵硬度的研究

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1、一Y847341应用光电容积脉搏波测量动脉僵硬度的研究StudyonMeasurementofArtery，StiffnessBasedonDigitalVolumePulseWave学科专业：测试计量技术及仪器研究生：刘云丽指导教师：蒋诚志教授天津大学精密仪器与光电子工程学院二零零五年一月·ABSTRACTCardiovasculardisease1Soneoftheheavydiseaseswhichharmthehumanhealth，andWorldHealthOrganizationhasnamed

2、itasthefirstkillerwhichharmsthehumanhealthinthe21stcentury．Theessenceofcardiovasculardiseaseisbloodvesseldiseaseorabnormity．Ithelpstodiagnosepatientnearclinicsituationbydeterminingarterialstiffnessandlargearteryfunctionatearlierperiodandguardagainstefficien

3、tly,SOithasgreatscienceandsocialvalue．Nowthenon—invasivewayshavebothadvantagesanddisadvantages．andtheyareexpensive．complexandlackoftheory．Thephotoplethysmographyissimpleandcheap，ithasgreatpotential．Soweusedigitalvolumepulse(DVP)toassesslargearterialstiffnes

4、s．ItmeasuresarterialstiffnessbyanalyzingcontourofDVP．Theaimofthearticleistestingitsfeasibility．Thearticledidthefeasibilitystudyfromtwoaspectsoftheoryandexperiment．Abouttheory,weintroducedknowledgeabouttheproducetheoryofpulsewave，thestructureofarterialvessel

5、anditschangeafterarteriosclerosis，therelationbetweenpulsewavevelocityandarterystatus，pressurewavetransmissionandreflectiontheoryandSOon．ThuswegavethetheorybasisofusingDVPtodeterminethearterystiffnessbythenumbers．Wedevelopedasystemtodeterminearterialstiffnes

6、sbasedonVisualInsmanentcvI)usingabovetheoryinordertodoexperiment．Wepresentedthehardwareandsoftwaredesignofthesystem．Theemphasisofhardwareispulsewavemeasurecircuit，andtheemphasisofsoftwareisdataprocessing．ThecharacteristicofVIiseasytomodifj，andquicktodevelop

7、，SOitcallshortentheperiodofinstrumentdesignlargely．Thereprodueibilityexperimentofthesystemindicatedithashighreproducibilityandissuitabletodofeasibilitystudy．Thenwevalidatedthefeasibilitybyexperiment，includingfindingmeasureconditionanddoingfeasibilitystudy．F

8、irstly,wecomparedthepulsewavesunderdifferentconditions，thenchoseadaptablecondition．Secondly,wechoseastandardinstrument，measuredarterialstiffnessbyOursystemandstandardinstrumentsimultaneously．Wecollecte