摘要
目的寻求基于CTA断层图像重建直肠及周围结构数字模型及三维可视化的方法。方法基于空气灌肠造影及CTA血管造影技术,64排螺旋CT对胸12至股骨中上部分沿横断面在动脉期及静脉期连续跟踪扫描。Mimics软件基于856层Dicom3.0标准CT连续断层二维图像,分别对直肠及周围结构等各种组织进行三维重建。结果建立直肠及周围结构三维数字模型。结论薄层CT扫描技术和Dicom3.0标准的应用使数字模型的建立更为精确,空气灌肠造影及CTA血管造影技术方便建立肠管及血管结构,Mimics软件基于CT扫描图像建立人体各种结构更为方便,获得数字模型可为解剖教学、手术培训提供医疗教学平台。
Objective To reconstruct a digital three-dimensional model of the rectum and the surrounding structures based on CT angiographic (CTA) data. Methods Based on air pressure enema and CTA, the chest T12 level to upper portion of the femur of a healthy volunteer was scanned with 64-slice spiral CT in the arterial phase and venous phase. The rectum and the surrounding structures were reconstructed with Mimics software based on the two-dimensional images of 856 consecutive layers obtained by Dicom 3.0 standard CT. The model was validated using finite element analysis software. Results and Conclusion The established three-dimensional digital model allowed clear visualization of such structures of the lumbar vertebrae, pelvis, femur, abdominal aorta, internal iliac artery, external iliac artery, branches of the external iliac artery, skin, rectum, the colons, part of the small intestines, and the urinary bladder and prostate. The application of thin-layer CT and Dicom 3.0 standard renders better accuracy of the established digital model, which can provide a platform for surgical skill training and teaching of anatomy.
出处
《南方医科大学学报》
CAS
CSCD
北大核心
2008年第8期1466-1468,共3页
Journal of Southern Medical University