ComputedTomography計算機斷層掃描講解

ComputedTomography計算機斷層掃描WordsandexpressionsPART011.tomography[t??m?ɡr?fi]n.X線斷層攝影術2.noninvasive[?n?n?n?ve?s?v]adj.非侵入性的 Invasive[?n?ve?s?v]adj.擴散性的，侵入的；切入的，開刀的 MinimallyInvasiveSurgery微創(chuàng)手術微創(chuàng)外科手術微創(chuàng)術 minimallyinvasive微創(chuàng)微創(chuàng)性最小侵入性強直性脊柱后凸 invasivecarcinoma[醫(yī)]浸潤性癌3.cross-sectionaladj.斷面的sectional[?sek??nl]adj.部分的；小團體的；剖面的；sectionalview剖視圖斷面圖剖面圖截面圖Cross-sectionalStudy橫斷面研究橫斷研究橫斷面調查4.slice[sla?s]n.切片v.把……切成薄片；5.loaf[l??f]n一條，一塊aloafof...一條...一塊...6.diagnostic[?da??ɡ?n?st?k]adj.診斷的，判斷的；能指示某種疾病性質的；n.診斷程序,診斷程式（診斷計算機的錯誤）；（特有的）癥狀（或特征）；診斷學，診斷法diagnostictest診斷測試診斷試驗診斷性測試診斷考試UnifiedDiagnosticServices統(tǒng)一診斷服務diagnosticprogram診斷程序診斷步伐偵錯程式diagnosticsystem診斷系統(tǒng)diagnostictest診斷試驗diagnostictool診斷工具7.therapeutic[?θer??pju?t?k]adj.治療的，有療效的；使人鎮(zhèn)靜的，使人放松的；治療學的n.療法，治療藥物；治療學（therapeutics）therapeuticeffect治療效果療效治療作用therapeuticindex治療指數治療指數藥物治療指數療治指數therapeuticdose治療量治療劑量則以治療劑量常用量8.conventional[k?n?ven??n(?)l]adj.依照慣例的，遵循習俗的；常規(guī)的，conventionalmethod常規(guī)方法；習用方法9.motorized[?m??t?ra?zd]adj.摩托化的；機動化的motorizedbicycle電動自行車;電動腳踏車motor發(fā)動機，馬達；汽車motorcycle摩托車；機動車10.rotate[r???te?t]v.（使）旋轉，（使）轉動；定期調換地點（或位置）11.circular[?s??kj?l?(r)]adj.圓形的，環(huán)形的；循環(huán)的，繞圈的；Circularmotion圓周運動圓弧運動曲線動作circularsector扇形圓扇形詳細翻譯11.gantry[?g?ntr?]n.機架，門架12.fixedX-raytube固定陽極X線管13.beam[bi?m]n.梁，橫梁；光線，光柱；v.定向發(fā)出（無線電信號）；（光，光源）照耀；14.film膠卷，底片；15.sophisticated[s??f?st?ke?t?d]adj.復雜巧妙的，先進的，精密的sophisticatedtechnologies工藝精良工藝優(yōu)良highlysophisticatedproducts尖端產品尖端商品尖端產物16.tissues人體組織bodytissues人體組織 renaltissues腎組織腎臟組織softtissue軟組織17.incremental[???kr??ment(?)l/]adj.增加的，遞增的；逐漸的，逐步的18.skeleton[?skel?t(?)n]n骨骼，骨架19.abnormality[??bn???m?l?ti]n.異常；畸形，變態(tài)auditoryabnormality聽覺異常chromosomeabnormality染色體異常20.physician[/f??z??(?)n/]n.醫(yī)生，（尤指）內科醫(yī)生21.console[k?n?s??l]n.控制臺，儀表盤22.high-voltagesupplysystemn.高壓供電系統(tǒng)23.voltage[?v??lt?d?]n.電壓24.collimator[?k?l??me?t?(r)]n.準直器25.filtern.過濾器；濾波器26.dataacquisitionsystem數據采集系統(tǒng)27.slipringn.滑環(huán)TextStudyPART02ComputedTomography(CT)Computedtomography(CT),sometimescalled“computerizedtomography”isanoninvasivemedicalexaminationorprocedurethatusesspecializedX-rayequipmenttoproducecross-sectionalimagesofthebody.Eachcross-sectionalimagerepresentsa“slice”ofthepersonbeingimaged,liketheslicesinaloafofbread.Thesecross-sectionalimagesareusedforavarietyofdiagnosticandtherapeuticpurposes.noninvasive[?n?n?n?ve?s?v]adj.非侵入性的therapeutic[?θer??pju?t?k]adj.治療的，有療效的avarietyof各種各樣的UnlikeaconventionalX-ray—whichusesafixedX-raytube—aCTscannerusesamotorizedX-raysourcethatrotatesaroundthecircularopeningofadonut-shapedstructurecalledagantry.DuringaCTscan,thepatientliesonabedthatslowlymovesthroughthegantrywhiletheX-raytuberotatesaroundthepatient,shootingnarrowbeamsofX-raysthroughthebody.Insteadoffilm,CTscannersusespecialdigitalX-raydetectors,whicharelocateddirectlyoppositetheX-raysource.AstheX-raysleavethepatient,theyarepickedupbythedetectorsandtransmittedtoacomputer.rotate/r???te?ts/

旋轉circular

/?s??kj?l?(r)/

adj.圓形的，環(huán)形的donut

/?d??n?t/

n.炸面包圈，甜甜圈（同doughnut）transmitted/tr?nz?m?t?d/

adj.傳播的

v.傳輸；傳送EachtimetheX-raysourcecompletesonefullrotation,theCTcomputerusessophisticatedmathematicaltechniquestoconstructa2Dimagesliceofthepatient.Thethicknessofthetissuerepresentedineachimageslicecanvary

dependingontheCTmachineused,butusuallyrangesfrom1-10millimeters.Whenafullsliceiscompleted,theimageisstoredandthemotorizedbedismovedforwardincrementallyintothegantry.TheX-rayscanningprocessisthenrepeatedtoproduceanotherimageslice.Thisprocesscontinuesuntilthedesirednumberofslicesiscollected.sophisticated/s??f?st?ke?t?d/adj.見多識廣的，老練的，見過世面的；復雜巧妙的，先進的，精密的；水平高的，在行的；時尚的，精致的incrementally/???kr??ment?li/adv.遞增地；增值地Imageslicescaneitherbedisplayedindividuallyorstackedtogetherbythecomputertogeneratea3Dimageofthepatientthatshowstheskeleton,organs,andtissuesaswellasanyabnormalitiesthephysicianistryingtoidentify.Thismethodhasmanyadvantagesincludingtheabilitytorotatethe3Dimageinspaceortoviewslicesinsuccession,makingiteasiertofindtheexactplacewhereaproblemmaybelocated.stacked/st?kt/adj.放有大量……的，成堆的；排隊等候處理的；v.堆放skeleton/?skel?t(?)n/n.骨骼，骨架；abnormalities/,?bn?:'m?litiz/n.畸形；異常情況insuccession接連地，連續(xù)地TheCTmachineconsistsofgantry,examiningtableandconsole,mostoftheimportantcomponentsarelocatedinthegantry,whichincludeX-raytube,high-voltagesupplysystem,collimator,filter,detector,dataacquisitionsystemandslipring.console

/k?n?s??l/

vt.安慰；慰藉

n.控制臺，儀表盤high-voltage

/'hai'v?ultid?/

adj.高電壓的；有力的；激動活躍的collimator/?k?l??me?t?(r)/

n.準直管，準直儀，平行光管acquisition/??kw??z??(?)n/n.學得，習得；獲取slipring

滑環(huán)NotesPART031.Thesecross-sectionalimagesareusedforavarietyofdiagnosticandtherapeuticpurposes.

這些橫截面圖像用于各種診斷和治療目的。beusedfor...purpose被用于...的目的2.Insteadoffilm,CTscannersusespecialdigitalX-raydetectors,whicharelocateddirectlyoppositetheX-raysource.CT掃描儀使用特殊的數字x射線探測器，而不是膠片，它位于x射線源的正對面。

Insteadof...而不是... which引導的非限定性定語從句，表示解釋說明QuestionsPART041.Accordingtothepassage,whatiscomputedtomography(CT)? ItisanoninvasivemedicalexaminationorprocedurethatusesspecializedX-rayequipmenttoproducecross-sectionalimagesofthebody.2.What‘sthedifferencebetweenCTandX-ray?

X-rayusesafixedX-raytube,whileaCTscannerusesamotorizedX-raysourcethatrotatesaroundthecircularopeningofadonut-shapedstructurecalledagantry.3.HowdoestheCTworks? DuringaCTscan,thepatientliesonabedthatslowlymovesthroughthegantrywhiletheX-raytuberotatesaroundthepatient,shootingnarrowbeamsofX-raysthroughthebody.Insteadoffilm,CTscannersusespecialdigitalX-raydetectors,whicharelocateddirectlyoppositetheX-raysource.AstheX-raysleavethepatient,theyarepickedupbythedetectorsandtransmittedtoacomputer.4.Whatdeterminesthethicknessofthetissuerepresentedineachimageslice? ItvariesdependingontheCTmachineused,butusuallyrangesfrom1-10millimeters.

5.Howaretheimageslicescollected? Whenafullsliceiscompleted,theimageisstoredandthemotorizedbedismovedforwardincrementallyintothegantry.TheX-rayscanningprocessisthenrepeatedtoproduceanotherimageslice.Thisprocesscontinuesuntilthedesirednumberofslicesiscollected.6.Howcantheimageslicesbedisplayed? Imageslicescaneitherbedisplayedindividuallyorstackedtogetherbythecomputertogeneratea3Dimageofthepatientthatshowstheskeleton,organs,andtissuesaswellasanyabnormalitiesthephysicianistryingtoidentify.7.WhatdoestheCTmachineconsistof? TheCTmachineconsistsofgantry,examiningtableandconsole,mostoftheimportantcomponentsarelocatedinthegantry,whichincludeX-raytube,high-voltagesupplysystem,collimator,filter,detector,dataacquistionsystemandslipring.WordsandexpressionsPART051.MatchGameComputedtomographycross-sectionalimagesafixedX-raytubedigitalX-raydetectorimagesliceA.固定x射線管B.圖像切片C.計算機斷層掃描D.橫截面圖像E.數字x射線探測器Answer-C.D.A.E.B(1)Computedtomography(CT),sometimescalled“computerizedtomography”isanoninvasivemedicalexaminationorprocedurethatusesspecializedX-rayequipmenttoproducecross-sectionalimagesofthebody.

計算機斷層掃描(CT)，有時被稱為“計算機斷層掃描”，是一種非侵入性醫(yī)學檢查或程序，使用專門的x射線設備產生身體的橫截面圖像。2.Translation(2)Insteadoffilm,CTscannersusespecialdigitalX-r