資源描述:
《肝臟不典型腺瘤樣增生結(jié)節(jié)及局灶癌變?cè)缙赾t及mri診斷》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、肝臟不典型腺瘤樣增生結(jié)節(jié)及局灶癌變?cè)缙贑T及MRI診斷【摘要】目的探討分析肝臟不典型腺瘤樣增生結(jié)節(jié)及局灶癌變的早期CT和MRI表現(xiàn)和診斷價(jià)值。方法利用16排螺旋CT和MRI進(jìn)行平掃和增強(qiáng)檢查,并對(duì)其表現(xiàn)進(jìn)行回顧性分析。結(jié)果肝臟不典型腺瘤樣增生結(jié)節(jié)及局灶癌變CT表現(xiàn)缺乏特異性,但動(dòng)態(tài)增強(qiáng)掃描能幫助確認(rèn)癌前病變是多血供還是少血供。其MRI表現(xiàn)為T1WI呈高或稍高信號(hào),T2WI上為低或稍低信號(hào),用脂肪抑制后T1WI的高或稍高信號(hào)無(wú)變化。當(dāng)病灶有信號(hào)的變化,其內(nèi)出現(xiàn)了脂肪變和血流動(dòng)力學(xué)的改變,強(qiáng)烈提示癌變的
2、可能性。結(jié)論CT和MRI對(duì)肝臟不典型腺瘤樣增生結(jié)節(jié)及局灶癌變的早期診斷幫助很大,尤其是MRI,對(duì)其局灶癌變的檢出和定性診斷較容易,且準(zhǔn)確性較高,應(yīng)做為首選的檢查方法。?【關(guān)鍵詞】肝臟不典型腺瘤樣增生結(jié)節(jié)及局灶癌變;X線計(jì)算機(jī);磁共振成像??LiverisnottypicaladenomatoushyperplasiafocalcancerousnodulesandtheearlydiagnosisofCTandMRIMAYan-hua,WANGTie-zhi,WANGLin.Branch6CT,Wa
3、lanhaoteCityHospital,InnerMongolia137400,China?【Abstract】ObjectiveAnalysisoftheliverisnottypicaladenomatoushyperplasiafocalcancerousnodulesandtheearlyCTandMRIanddiagnosticvalue.MethodsThe16-sliceCTandMRItoscanandenhancetheinspection,andtheirperformance
4、wasreviewed.ResultsNottypicalliveradenomatoushyperplasiafocalcancerousnodulesandCTfindingsofthelackofspecificity,butthedynamicenhancedscancanhelptoidentifyprecancerouslesionsismoreorlessbloodforbloodsupply.T1WIitsMRIshowedahighorslightlyhighersignal,T2
5、WIforloworlowersignals,withfatsuppressionT1WIafterthehighorslightlyhighersignalnochange.Whenthelesionsaresignalsofchange,thereisafatchangeandchangesinhemodynamics,itstronglysuggestedthatthepossibilityofcancer.ConclusionsMRIandCTfindingsoftheliverisnott
6、ypicaladenomatoushyperplasiafocalcancerousnodulesandtheearlydiagnosisofgreathelp,especiallyMRI,itsfocal6cancerdetectionanddiagnosismoreeasily,andhigheraccuracy,shouldbedoneAsthepreferredmethod.?【Keywords】Liverisnottypicaladenomatoushyperplasiaandfocalc
7、ancerousnodules;Xlinecomputer;Magneticresonanceimaging?肝臟不典型腺瘤樣增生結(jié)節(jié)是一種癌前病變,代表了肝癌發(fā)生過(guò)程中的中間環(huán)節(jié),早期發(fā)現(xiàn)和早期診斷對(duì)選擇治療方案和改善預(yù)后有重要意義。我國(guó)習(xí)慣上用不典型腺瘤樣增生結(jié)節(jié)來(lái)描述癌前病變[1]。臨床上大多數(shù)癌前病變的患者無(wú)癥狀,部分臨床醫(yī)生也未認(rèn)識(shí)到此病的重要性,往往有較多的誤診,耽誤了治療時(shí)機(jī)。本文通過(guò)對(duì)10例肝臟不典型腺瘤樣增生結(jié)節(jié)及部分局灶癌變的CT和MRI表現(xiàn),對(duì)其早期診斷進(jìn)行了回顧性分析,現(xiàn)報(bào)告
8、如下。?1材料與方法?1.1一般資料收集本院2006-2008年10例患者,男7例,女3例。年齡37~56歲,平均45歲。大多數(shù)患者沒(méi)有臨床癥狀,多在超聲查體或CT、MRI檢查時(shí)發(fā)現(xiàn)。?1.2檢查方法CT檢查前常規(guī)口服1%泛影葡胺造影劑800~1000ml,半小時(shí)后行CT掃描。采用Philips16層螺旋掃描機(jī),層厚2mm,間隔2mm。螺距1.15?∶?61,增強(qiáng)掃描經(jīng)肘靜脈用高壓注射器注入非離子型對(duì)比劑優(yōu)維顯(370)100ml,速率3ml/s,采用智能跟蹤技術(shù),跟