放射学实践
放射學實踐
방사학실천
RADIOLOGIC PRACTICE
2014年
10期
1187-1190
,共4页
体层摄影术,X 线计算机%图像增强%胰腺
體層攝影術,X 線計算機%圖像增彊%胰腺
체층섭영술,X 선계산궤%도상증강%이선
Tomography,X-ray computed%Image enhancement%Pancreas
目的:探讨计算机断层扫描(CT)成像、CT 增强扫描和 CT 仿真内镜(CTVE)技术对异位胰腺诊断的价值。方法:回顾性分析16例经临床病理和免疫组化证实异位胰腺的平扫 CT、增强 CT 扫描及 CTVE 图像。对图像行三维后处理,使用原始数据行冠状面和矢状面图像重建,以及使用 CTVE 软件行三维重建。结果:16例异位胰腺病灶9例位于胃窦部粘膜下,6例位于十二指肠球部,肠系膜根部1例,CT 上未见明显病灶。8例表现外生性病灶,7例表现为管腔内的局部隆起。病灶边缘清晰,4例病灶略呈分叶状。平扫及增强表现:15例病灶呈实性,10例均表现为动脉期、静脉期、延迟期均匀强化,与胰腺强化方式相仿,4例病灶强化欠均匀,1例病灶为脂肪密度病灶,增强后强化不明显。其中8例实性异位组织内在轴面或矢状面、或冠状面或 MPR 图像上可见低密度的导管结构。CTVE 发现病灶表面没有中央凹陷或脐凹的特点,显示病灶周围的粘膜结构是正常的。结论:CT、增强 CT 和 CTVE 技术可以显示异位胰腺的生长方式、密度、形态及强化方式等特点,为异位胰腺的诊断提供重要依据。异位胰腺内的导管结构显示以及 CTVE 显示病灶周围粘膜为正常结构,是异位胰腺的 CT 特征性表现。
目的:探討計算機斷層掃描(CT)成像、CT 增彊掃描和 CT 倣真內鏡(CTVE)技術對異位胰腺診斷的價值。方法:迴顧性分析16例經臨床病理和免疫組化證實異位胰腺的平掃 CT、增彊 CT 掃描及 CTVE 圖像。對圖像行三維後處理,使用原始數據行冠狀麵和矢狀麵圖像重建,以及使用 CTVE 軟件行三維重建。結果:16例異位胰腺病竈9例位于胃竇部粘膜下,6例位于十二指腸毬部,腸繫膜根部1例,CT 上未見明顯病竈。8例錶現外生性病竈,7例錶現為管腔內的跼部隆起。病竈邊緣清晰,4例病竈略呈分葉狀。平掃及增彊錶現:15例病竈呈實性,10例均錶現為動脈期、靜脈期、延遲期均勻彊化,與胰腺彊化方式相倣,4例病竈彊化欠均勻,1例病竈為脂肪密度病竈,增彊後彊化不明顯。其中8例實性異位組織內在軸麵或矢狀麵、或冠狀麵或 MPR 圖像上可見低密度的導管結構。CTVE 髮現病竈錶麵沒有中央凹陷或臍凹的特點,顯示病竈週圍的粘膜結構是正常的。結論:CT、增彊 CT 和 CTVE 技術可以顯示異位胰腺的生長方式、密度、形態及彊化方式等特點,為異位胰腺的診斷提供重要依據。異位胰腺內的導管結構顯示以及 CTVE 顯示病竈週圍粘膜為正常結構,是異位胰腺的 CT 特徵性錶現。
목적:탐토계산궤단층소묘(CT)성상、CT 증강소묘화 CT 방진내경(CTVE)기술대이위이선진단적개치。방법:회고성분석16례경림상병리화면역조화증실이위이선적평소 CT、증강 CT 소묘급 CTVE 도상。대도상행삼유후처리,사용원시수거행관상면화시상면도상중건,이급사용 CTVE 연건행삼유중건。결과:16례이위이선병조9례위우위두부점막하,6례위우십이지장구부,장계막근부1례,CT 상미견명현병조。8례표현외생성병조,7례표현위관강내적국부륭기。병조변연청석,4례병조략정분협상。평소급증강표현:15례병조정실성,10례균표현위동맥기、정맥기、연지기균균강화,여이선강화방식상방,4례병조강화흠균균,1례병조위지방밀도병조,증강후강화불명현。기중8례실성이위조직내재축면혹시상면、혹관상면혹 MPR 도상상가견저밀도적도관결구。CTVE 발현병조표면몰유중앙요함혹제요적특점,현시병조주위적점막결구시정상적。결론:CT、증강 CT 화 CTVE 기술가이현시이위이선적생장방식、밀도、형태급강화방식등특점,위이위이선적진단제공중요의거。이위이선내적도관결구현시이급 CTVE 현시병조주위점막위정상결구,시이위이선적 CT 특정성표현。
Objective:To investigate the value of CT,enhanced CT and CT virtual endoscopy (CTVE)technique in the diagnosis of heterotopic pancreas.Methods:The images of CT without and with enhancement,CTVE in 16 patients with heterotopic pancreas proved by pathology and clinical immunohistochemistry examination were retrospectively analyzed. Post-processing techniques were used.Coronal and sagittal reformation and 3D reconstruction were performed with source images and CTVE software.Results:Of the 16 patients with heterotopic pancreas,the location was gastric antrum (n=9), duodenal bulb (n=6),mesenteric root (n=1).No definite lesion was revealed on plain CT.Exogenous lesion could be seen in 8 patients,focal intra-luminal protrusion in 7 patients.The contour of lesions were well-defined,with 4 lesions showing slight lobulation.The CT features before and after enhancement were as follows:solid lesion (n= 15 ),homogeneous en-hancement during arterial,venous and delayed phase,the enhanced pattern similar to that of pancreas (n=10);heterogene-ous enhancement (n=4);fat-like attenuation with no obvious enhancement (n=1).Low density ductal structure could be showed within the solid lesion in axial/sagittal/coronal MPR images (n=8 ).None of the CTVE images showed typical signs of central dimpling or umbilication.Normal mucosa could be seen around the lesion.Conclusion:Growth pattern,atten-uation,morphology and enhanced characteristics can be revealed on plain CT,enhanced CT and with CTVE technique,pro-vide important information for the diagnosis of heterotopic pancreas.The most characteristic features are the intra-lesional ductal structure and the normal mucosa around the lesion.