内耳影像学
光学相干断层成像用于内耳结构的成像的研究JuichiITO1,YosukeTONA2,TatsunoriSAKAMOTO2,TakayukiNAKAGAWA2
日本,志贺医疗中心,成人研究机构,耳鼻咽喉头颈外科,
日本,京都大学医学研究生院,耳鼻咽喉头颈外科
引言内耳的最新研究,尤其是内耳细胞再生和保护方面的研究,为内耳疾病新的治疗技术提供了基础。然而,由于内耳疾病缺乏准确的诊断,将这些新技术应用于临床仍是一道难题。内耳其内部结构是薄层膜迷路,外裹骨性外壳。利用近红外光原理的光学相干断层扫描是一种无创性横断面成像系统,它已经广泛应用于眼科、皮肤科和心血管内科,它有望应用于内耳结构的分析并提供诊断信息。
方法和结果以动物内耳结构作为研究模型,确认部分Reissner膜、部分基底膜、中阶软组织,同样观察耳蜗蜗孔。确认球囊斑和椭圆囊斑。部分内淋巴囊及其导管也被观察到了。我们也将光学相干断层扫描进一步应用于球囊及椭圆囊斑的观察。在正常小鼠与SLC26A4基因敲除小鼠,后者已知伴有严重的内淋巴积水,通过OCT同样观察到内淋巴积水。我们还研发了一种光纤型光学相干断层扫描系统的样机,其末端通过人体标本颞骨上的造口植入耳蜗内,可成功获取到影像资料。
结论光学相干断层扫描用于内耳结构的观察具有远大前景。
TheInnerEarImaging
IMAGINGOFINNEREARSTRUCTUREUSINGOPTICALCOHERENCETOMOGRAPHY(OCT)JuichiITO1,YosukeTONA2,TatsunoriSAKAMOTO2,TakayukiNAKAGAWA2
1DepartmentofOtolaryngologyHeadAndNeckSurgery,ShigaMedicalCenterForAdultsResearchInstitute,Japan
2DepartmentofOtolaryngologyHeadAndNeckSurgery,GraduateSchoolofMedicine,KyotoUniversity,Japan
Introduction:Recentadvancementsofinnerearresearches,especiallyregenerationandprotectionofinnerearcells,haveprovidedthebasisofnewtreatmentstrategiesofinnereardisorders.However,itisstilldifficulttoapplythosenewtechnologiestoclinicsduetolackofaccuratediagnosisofinnereardisorders.Innerearstructureshaveinternalstructureswiththinmembranouslabyrinthsurroundedbybonycapsule.Opticalcoherencetomography(OCT)isanon-destructivecross-sectionalimagingmodalitywhichutilizesnearinfra-redlight.OCThaswidelybeenappliedtoclinicinthefieldofophthalmology,dermatology,andcardiovascularmedicine.OCTisexpectedtovisualizeinternalstructuresofinnerearandprovidediagnosticinformation.
MethodsandResults:Usinganimalsinternalstructuresofinnerearswereinvestigated.PartofReissner’smembrane,partofbasalmembrane,andthesofttissueofscalamediawereidentified.Helicotremaofcochleawasalsoobserved.Saccularandutricularmaculaewereidentified.Partofendolymphaticsacandductwerealsoobserved.WealsoevaluatedpotentialofOCTforthevisualizationofthevestibularsystemincludingmaculae,otolithofextractedmouseinnerears.NormalandSlc26a4knockoutmice,whichareknowntoshowsevereendolymphatichydrops,wereusedinthisstudyandfoundtheendolymphatichydropswellbyOCTForclinicalapplicationwefabricatedaprototypefiber-typeOCTsystem.ThescannertipwasinsertedintothecochleaviacochleostomyinhumantemporalbonespecimenandtheOCTimagesweresuccessfullyobtained.
Conclusion:OCTisapromisingtoolforvisualizetheinnerearfinestructures.
本文版权归中国医药教育协会眩晕专业委员会所有,欢迎转发,禁止复制转载!如有转载需求,请联系专委会办公室-。