肝脏及肝内血管系统CT扫描三维重建的解剖学研究

发布时间：2018-01-03 03:45

本文关键词：肝脏及肝内血管系统CT扫描三维重建的解剖学研究　出处：《青岛大学》2012年硕士论文　论文类型：学位论文

更多相关文章： 多排螺旋CT 肝脏 Amira 三维重建

【摘要】：目的以肝脏多排螺旋CT扫描断层图像数据为基础,探讨利用Amira(法国TGS公司出品的一款具有交互式三维可视化及建模功能的三维重建软件)进行实时个性化的肝脏(包括其内部血管系统)三维重建,并将所得三维图像与实体肝脏解剖结构对比,分析多排螺旋CT扫描三维重建的优势及临床意义。方法选择体检健康者(男性,30岁,身高1.75米,体重：65公斤),以多排螺旋CT进行上腹部的平扫和增强扫描,以所得数据为基础进行三维重建。流程主要分为四步：(1)对获取的断层图像进行预处理；(2)将肝脏图像从断层图像中单独分离出来；(3)在相邻两个断层图像之间进行处理,以使空间三个方向具有相同(或相差较小)的数据；(4)将重建后的三维图像在电脑显示器上进行立体显示,对其进行几何变换的运算,完成断层的重建。根据重建的三维图像分析肝脏及其内部血管系统的解剖特点,并与实体肝脏解剖结构对比分析。结果我们得到的肝脏重建模型解剖结构清晰,形态逼真,立体感强。其中门静脉系统,清楚显示脾静脉和肠系膜上静脉汇合成门静脉主干以及入肝后的各级分支,并可显示各血管的立体走向。通过对三维图像进行放大、缩小和旋转可全方位观察各解剖结构。通过调节透明度和色差可单独显示肝脏及其管道结构各部分。结论以多排螺旋CT扫描断层图像数据为基础,利用Amira三维重建软件可进行实时个性化的肝脏(包括其内部血管系统)三维重建；重建后的肝模型具有肝脏、肝动脉、肝静脉和门静脉,形态逼真,立体感强；重建的肝脏三维图像能真实反映肝脏的实际体积和肝脏的各种解剖标志,如肝动、静脉和门静脉的分布、走行以及毗邻关系等；与传统影像相比,形态更加逼真,立体感更强。相比传统的解剖图谱更加形象、生动。对推进解剖学及肝脏外科手术学的发展有重要意义。
[Abstract]:Objective to study the basis of liver multi-slice spiral CT (MSCT) images. To explore the use of Amira (a 3D reconstruction software with interactive 3D visualization and modeling) produced by TGS of France, to carry out real-time personalized liver (including its internal vascular system). 3D reconstruction. The advantages and clinical significance of 3D reconstruction of multi-slice spiral CT scanning were analyzed by comparing the 3D images with the anatomical structure of solid liver. Methods the healthy subjects (male, 30 years old, 1.75 meters tall, weight of 65 kg) were examined by multi-slice spiral CT scan of epigastrium. Three-dimensional reconstruction is carried out based on the obtained data. The flow is divided into four steps: 1) preprocessing the acquired image; 2) separate the liver image from the tomographic image; (3) processing between adjacent two tomographic images so that the three directions of the space have the same (or smaller difference) data; Finally, the reconstructed 3D image is displayed on the computer display, and the geometric transformation is performed. According to the reconstructed 3D images, the anatomical characteristics of liver and its internal vascular system were analyzed, and the anatomical structure of the liver was compared with that of the solid liver. Results the anatomical structure of the liver reconstruction model was clear, the morphology was lifelike, and the three-dimensional feeling was strong. Among them, the portal vein system. The splenic vein and superior mesenteric vein were clearly shown to synthesize the portal vein trunk and the branches of the portal vein at all levels after entering the liver, and the stereoscopic direction of the blood vessels could be displayed. The three-dimensional image was amplified. The anatomical structure can be observed in all directions by reducing and rotating. By adjusting transparency and chromatic aberration, the liver and its pipework can be displayed separately. Conclusion based on the image data of multi-slice spiral CT scanning, the three-dimensional reconstruction of liver (including its internal vascular system) can be carried out by using Amira 3D reconstruction software. The reconstructed liver model had liver, hepatic artery, hepatic vein and portal vein. The reconstructed three-dimensional images of the liver can reflect the actual volume of the liver and various anatomical markers of the liver, such as the distribution of hepatic artery, vein and portal vein, walking and adjoining relationship, etc. Compared with the traditional image, the shape is more realistic, the stereoscope is stronger, and the anatomic map is more vivid and vivid than the traditional image. It is of great significance to promote the development of anatomy and liver surgery.
【学位授予单位】：青岛大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：R322.47

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