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ID:15514611
大小:41.00 KB
页数:15页
时间:2018-08-03
《医学影像放射技术试题(medical image radiology test questions)》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、医学影像放射技术试题(Medicalimageradiologytestquestions)Nouninterpretation:1.Radiationfield:X-rayincidentintheexposedareaofthelimbListentothecanthus:externalearcanalandlateralcanthusSagittalplane:twopartsofthehumanbodyarebrokenandleftinfrontandback,andthecrosssectionissagittalplaneDirectintroductionmetho
2、d:thecontrastagentisintroducedintothecorrespondingorganthroughthenaturalchannelmouth,orthroughtheskinpuncture,fromtheneedletubeortheconnectiveguideTheinjectioncontrastagent,whichisintroducedintothelumenororganoftheexternalisolation,iscalleddirectintroduction5pixels:thesmallestunitthatformsadigi
3、talimage1windowwidth:thescopeofCTvaluesrepresentedbythe16thgradeonCTimage:2gridratio:theratiobetweentheheightofthefiltergridleadbarandthewidthoftheleadbar3rightanteriorobliqueposition:therightfrontofthebodyisclosetothedarkbox,theXrayiscomingfromtheleftbehindthebody,andtherightfrontisejectedEffe
4、ctivefocus:theactualfocusisprojectedindifferentdirectionsThedigitalmatrixdigitalimageallpixelarraysarecalleddigitalimagematrix1photocontrast:theopticaldensityofthetissueimageintheimageImage:fluorescenceinthefluorescenceimageindicatesthattheamountofxraysthatareabsorbedbythebodyofthebodythatisbei
5、ngdetectedbythebodyofthebodyismorethanthatThedarkpartsindicatethattheamountofxraysbeingabsorbedbythelimbislessthanthatofthexrays.TheimageofthefluorescenceimageisdescribedForjustasthePracticalfocus:theimpactareaontheX-raytubeanodeiscalledtheactualfocalpointwhentheelectronfromthefilamentisfocused
6、.Centerline:theXlineatthecenteroftheXrayiscalledthecenterline5DSA:digitalsubtractionangiography1negativeas:useoflighttoobserveX-rayimage,throughstrongvisiblepartofthesaidinspectionbodytissuedensityishigh,theX-rayabsorptioncapacityismuch,butthroughthelessvisiblepartofthesaidinspectionbodytissued
7、ensityislow,lessabsorptionofx-rays,weputtheimagesofthefluorescenceimageItbecomesanegativeimage.Focallength:thedistancebetweenthefocalpointoftheX-raytubeandthebodycenterofthecheckeriscalledthefocallength3coronalplane:thehumanbodyis
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