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目的:通过CT扫描获取胆道系统容积数据,确立人体胆道系统三维重建的方法。方法:7例正常成人新鲜尸肝,以羧甲基纤维素(carboxymethylcellulose,CMC)/氧化铅(leadoxide,LO)混合物、牙托粉和明胶分别对应经胆道、门静脉和肝静脉灌注显影和固形,16排CT机扫描获取断层数据,在工作站用Mimics软件处理,建立胆系三维图像并进行评估。结果:7例标本6例灌注满意;6例满意者胆管连续、光滑、无伪影,空间感强烈、可任意度旋转;肝脏Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ、Ⅶ、Ⅷ各段胆管显示级数分别为5.8±0.75,10.1±1.05,10.2±0.98,7.8±0.75,11.8±0.75,11.7±0.82,13.2±0.75,11.7±1.63,相应各肝段胆管三维图像质量平均优秀率依次为98.14、97.78、97.82、98.68、97.05、96.22、95.02和95.31%;6例肝胆道图像平均优秀率(97.01±1.35)%。结论:本法建立的人体胆道系统三维模型胆道连续性好、图像空间感强烈,胆管显示级数多,图像质量高,是一种优秀的胆系三维重建方法。
OBJECTIVE: To obtain the volume data of biliary tract by CT scan and establish the method of three-dimensional reconstruction of human biliary system. Methods: Seven adult normal fresh corpses were treated with carboxymethylcellulose (CMC) / lead oxide (LO) mixture, powdered dentin and gelatin, respectively, for perfusion and solidification via biliary duct, portal vein and hepatic vein. The 16-slice CT machine scans for tomographic data and is processed at the workstation using Mimics software to create and evaluate a three-dimensional image of the gall bladder. Results: 6 cases were satisfactorily perforated in 7 cases. The bile ducts of 6 satisfied patients were continuous, smooth and without artifacts. The spatial sense was strong and could be rotated arbitrarily. The sections of liver Ⅰ, Ⅱ, Ⅲ, Ⅳ, Ⅴ, Ⅵ, Ⅶ and Ⅷ The bile duct display series were 5.8 ± 0.75, 10.1 ± 1.05, 10.2 ± 0.98, 7.8 ± 0.75, 11.8 ± 0.75, 11.7 ± 0.82, 13.2 ± 0.75 and 11.7 ± 1.63, respectively. The average excellent rate of three-dimensional image quality of the corresponding bile ducts was in turn Were 98.14, 97.78, 97.82, 98.68, 97.05, 96.22, 95.02 and 95.31%, respectively. The average excellent rate of liver and biliary tract images was 97.01 ± 1.35%. Conclusion: The three-dimensional model of human biliary system established by this method is an excellent method for three-dimensional reconstruction of biliary tract with good biliary continuity, intense image space, multiple bile duct displays and high image quality.