资源描述：
《医学影像学大题（major problems in medical imaging）》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、医学影像学大题（Majorproblemsinmedicalimaging）Bookmarkandskiptothebottomofmedicalimaging.Thisarticleiscontributedbymichealm4DOCdocumentsmayexperiencepoorbrowsingontheWAPside.ItisrecommendedthatyouselectTXTfirstordownloadthesourcefiletothelocalmachine.Imagingfindingsof1.eso
2、phagealvarices.Answer:accordingtotheextentandscopeoflesions,itisdividedinto:light,medium,heavythreedegrees,thereisnostrictboundarybetweenthethree.Mild:esophagealvaricesintheloweresophagus,showedmucosalfoldsslightlywidenedorslightlytortuous.Thewallofthetubeissmootha
3、ndtheedgeofthetubeisserrated.Moderate:typicalsymptomsofesophagealmucosalfoldswerewidened,tortuous,earthwormorbeadedfillingdefect,wallirregularedge.Thetubewalliswideandthebariumisslightlyslower.(3)severe:thelesionsbecameworse,andthelesionsgraduallydevelopedupward,in
4、volvingthewholelengthofesophagus.Theabovefindingsweremoreobvious,andtheesophagealtensiondecreased,thelumendilated,theperistalsisdecreasedandthebariumemptyingdelayed.Directsignsandindirectsignsof2.gastriculcer.Answer:thedirectsignsofgastriculcer:niche.Thenicheinsmal
5、lbend,tangentialpapillary,coneshapeorothershapes;positiveobservation,ifthenichefilledwithcontrastagent,isakindofcircularbariumspots,ifthecontrastagentinthenicheoutflow,showedaring.Insmoothedgesandtidy,smoothorslightlyunevenbottom.Nichemouthoftenwithatransparentcirc
6、leofmucosaledemacausedby.Thiszoneisthecharacteristicsofbenignmucosaledemaulcer,accordingtoitsscopehasdifferentmanifestations:acrossthemucosalline:anichemouthwide1-2mmlighttransparentlinenotneat;thecollarsign:transparentbandwidth0.5-1cmnichemouth,likeacollar;thenarr
7、ownecksyndrome:nichemouthobviouslysmall,suchasanarrowneck.Chroniculceraroundthescarcontractioncausedbymucosalfoldsgathereduniformity.Thefoldssuchaswheelstothenichemouthconcentratedandreachmouthedgeandgraduallynarrowed,isanotherfeatureofbenignulcer.Indirectsigns:spa
8、sticchanges,manifestedasdepressiononthestomach(alsocallednotch),asmallcurvedcrater,inthedeepnotchappearsrelativelyatthegreatercurvatureofthespasm
