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1、放射學(xué)實踐2006年6月第21卷第6期RadiolPractice,Jun2006,Vol21,No.6553中樞神經(jīng)影像學(xué)鞍區(qū)Rathke囊腫MRI診斷魏文蘋,林建忠,楊天和【摘要】目的:探討鞍區(qū)Rathke囊腫的MRI表現(xiàn),以提高對該病的認識。方法:回顧性分析11例經(jīng)手術(shù)病理證實的鞍區(qū)Rathke囊腫MRI表現(xiàn)。結(jié)果:囊腫位于鞍內(nèi)4例,鞍內(nèi)向鞍上延伸6例,完全位于鞍上1例,多呈圓形、卵圓形或啞鈴形,邊界清楚,囊壁菲薄。T1WI、T2WI示囊液均為高信號2例;T1WI上呈高信號、T2WI上呈低信號2例;其余7例,T1WI呈等信號2例,呈低信號5例,T2WI均為高信號。囊內(nèi)可見漂
2、浮結(jié)節(jié)影5例,囊壁見線樣增強1例。結(jié)論:典型鞍區(qū)Rathke囊腫MRI表現(xiàn)有一定特征性,結(jié)合臨床表現(xiàn),術(shù)前正確診斷是可能,但不典型病例需與鞍區(qū)垂體腺瘤、顱咽管瘤相鑒別?！娟P(guān)鍵詞】中樞神經(jīng)系統(tǒng)囊腫;磁共振成像;拉特克頰裂囊腫【中圖分類號】R445.2【文獻標(biāo)識碼】A【文章編號】1000-0313(2006)06-0553-04MRIDiagnosisofRathkesCleftCystsWEIWen-ping,LINJian-zhong,YANGTian-he.DepartmentofRadiology,theFirstHospitalofXiamen,Fujian361003,
3、P.R.China【Abstract】Objective:TosummarizeMRfeaturesofRathkescleftcystssoastoimproveourknowledgeaboutthisentity.Methods:MRIof11casesofRathkescleftcystsprovedbysurgeryandpathologywereanalyzedretrospectively.Results:Fourcystswereentirelyintrasellar,6wereintrasellarwithsuprasellarextensions,and1was
4、suprasellar.Thecystswereround,ovalordumbbellinshape,theoutlineofcystswassharpandthewallofcystswasverythin.ThecystfluidshowedhyperintenseonT1WIandT2WIin2cases,hyperintenseonT1WIandhypointenseonT2WIin2cases;intherest7cases,isointensityin2casesandhypointensityin5caseswereshowedonT1WIandhyperintensit
5、yonT2WI.Intracysticnoduleswerefoundin5cases,linearcontrastenhancementoncysticwallwasseenin1case.Conclusion:RathkescleftcystspossesssomefeaturesonMRandpreoperativeaccuratediagnosismaybeobtainedbyintegratingMRIfindingsandclinicaldata,butatypicalcasesshouldbedifferentiatedfrompituitaryadenomaandcra
6、niopharyngioma.【Keywords】Centralnervoussystemcysts;Magneticresonanceimaging;Rathkecleftcysts1943年Frazier和Alpers首次報告1例有癥狀的型磁共振成像儀,頭部線圈,常規(guī)SE序列成像,矢狀拉特克頰裂囊腫(Rathke囊腫),并首次提出將其起源面掃描層面平行于大腦縱裂池,范圍包括兩側(cè)海綿竇;[1]歸結(jié)于Rathke囊以來,逐漸引起了神經(jīng)放射學(xué)醫(yī)師冠狀面掃描層面垂直于蝶鞍平面,范圍由眶尖至斜坡;的注意。本文通過回顧性分析11例Rathke囊腫的軸面掃描平行于蝶鞍平面,范圍由蝶竇至頂葉。
7、冠狀MRI表現(xiàn),旨在提高對該病的認識。面、軸面T1WI、T2WI及矢狀面T1WI,視野200mm220mm。矩陣192256~256256,層厚3~5mm,材料與方法增強掃描7例,采用順磁性對比劑釓噴酸葡胺(Gd-搜集廈門中山醫(yī)院(7例)和廈門市第一醫(yī)院(4DTPA)按0.1mmol/kg劑量給藥,靜脈給藥后常規(guī)行例)自1995年2月到2005年1月經(jīng)手術(shù)病理證實鞍冠狀面及矢狀面T1WI。區(qū)Rathke囊腫患者的MRI資料總共
