資源描述：
《醫(yī)學(xué)影像（medical imaging ）》由會(huì)員上傳分享，免費(fèi)在線(xiàn)閱讀，更多相關(guān)內(nèi)容在教育資源-天天文庫(kù)。
1、醫(yī)學(xué)影像1（Medicalimaging1）ImagingdiagnosisofdigestivesystemThefirstsectionofdigestivetractimagingexaminationmethodBariumsulfateexaminationofdigestivetractItisdividedintotwokindsoftraditionalanddoublecontrast,whichisthepreferredmethodofinspectionUltrasonographyandCTexaminationTh
2、einternalcondition,invasionandmetastasisofthetumorwereobservedMRIexaminationIthascharacteristics,butitisseldomusedindiagnosisTraditionalradiographyconceptThecontrastagentisintroduced?Organs,thefilling,resultinginupliftonthescreenorthefilm(fillingdefect)ordepression(prominen
3、tniche)silhouetteimagecast,whichcanbecalled"cast"or"silhouettestylecheck".Traditionalradiography-Method(1)characteristicsofbariumsulfate(BaSO4)Concentration:esophagus220%W/V;stomach130%W/Vsmallintestineandcolon50%W/VViscosity:1000cPa.SSuspensionheightTheparticlesaresmalland
4、uniform,andthesizeisabout1mm(two)inspectionmethodObservationoffourphases:filling,compressionSimpledoublecontrast,mucosalphaseThree.InspectionsiteEsophagus:mucosa,fillingphaseStomach,duodenum:mucosaphase,fillingphase,compressionphase,simpledoublecontrastphaseSmallintestine:f
5、illingphaseandmucousmembranephaseColon:fillingphase,mucosaphase,compressionphaseDoublecontrastradiographyconceptWhentheorganisinflatedbygas,itformsnegativebackgroundontheX-ray.Asmallamountofhighqualityandhighconcentrationbariumcandelineatetheshapeofthecysticorgan,whichisals
6、ocalled"panoramic"examinationDoublecontrastradiographymethod(1)BaSO4features:A:highcontent;B:C:uniformparticles;goodviscosity,goodfluidity,10-15cPa.S;D:suspensionstability;acidresistance;E:F:160%W/V:theconcentrationoftheesophagus,stomachintestinecolon60-65%W/V50-60%W/V;(2)h
7、ypotonicdrugs:654-2moreuse(3)gasproductionmethod:gasinjectionfoamingagentinhalationDoublecontrastradiographymethodDoublecontrastradiographyoftheesophagus,bariumandgaswereswallowedtogetherThestomach?A,lowB,aZhang;oralbariumaftergasinjection,observationofgastricmucosa;C,lefta
8、nteriororthostaticbarium200-300ml,observationoftheesophagusandgastriccardia;D,supi
