脑血管三维重建及算法实现
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摘要
针对目前脑血管的三维重建技术存在着对硬件要求高、重建结果与人体解剖学结果差距较大的问题,本文提出了一种脑血管三维重建方法。将扫描得到的CTA图像导入到Mimics17. 0软件中,先进行阈值分割,然后蒙版编辑,最后通过区域增长。经过这些预处理后,结合错切变形法的三维重建算法,得到三维重建的脑血管模型。其处理所得的脑血管具有模型清晰、细节突出的优点,同时所得模型可以进行切割处理和实现任意角度的放大缩小。系统运行结果表明:此方法得到的脑血管图像更加真实,并且可以进行多种软件的导入、模拟训练及后期的研究,为脑血管介入手术的术前模拟提供了有效的方法。
At present,3-D reconstruction of cerebral blood vessels faces high hardware requirements and a wide gap between results of reconstruction and those of human anatomy. To solve these problems,this study proposes a new method of 3-D reconstruction of cerebral vascular vessels. Scanned CT images were imported into Mimics 17. 0 software for threshold segmentation,mask editing and region growing,such as pretreatment. Then,the cerebro-vascular 3-D reconstruction model was obtained by the 3-D reconstruction algorithm in combination with shearing warp algorithm. The processed cerebral blood vessels have advantages of clear model and outstanding details,and the obtained model is subjected to cutting processing and zooming in and out at any angle. System operation results show that the cerebral blood vessels are realistic and can be imported into various software,simulation training,and later research,thereby providing a new method for the preoperative simulation of cerebrovascular intervention.
At present,3-D reconstruction of cerebral blood vessels faces high hardware requirements and a wide gap between results of reconstruction and those of human anatomy. To solve these problems,this study proposes a new method of 3-D reconstruction of cerebral vascular vessels. Scanned CT images were imported into Mimics 17. 0 software for threshold segmentation,mask editing and region growing,such as pretreatment. Then,the cerebro-vascular 3-D reconstruction model was obtained by the 3-D reconstruction algorithm in combination with shearing warp algorithm. The processed cerebral blood vessels have advantages of clear model and outstanding details,and the obtained model is subjected to cutting processing and zooming in and out at any angle. System operation results show that the cerebral blood vessels are realistic and can be imported into various software,simulation training,and later research,thereby providing a new method for the preoperative simulation of cerebrovascular intervention.
引文
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[2]CAMPOS R,GARCIA R,ALLIEZ P,et al.A surface reconstruction method for in-detail underwater 3-D optical mapping[J].International journal of robotics research,2015,34(1):64-89.
[3]SINGH R,SRIVASTAVA R,PRAKASH O,et al.Mixed scheme based multimodal medical image fusion using daubechies complex wavelet transform[C]//Proceedings of International Conference on Informatics,Electronics&Vision.Dhaka,Bangladesh,2012:304-309.
[4]LAUR D,HANRAHAN P.Hierarchical splatting:a progressive refinement algorithm for volume rendering[J].ACM SIGGRAPH computer graphics,1991,25(4):285-288.
[5]PARMAR K,KHER R K,THAKKAR F N.Analysis of CTand MRI image fusion using wavelet transform[C]//Proceedings of 2012 International Conference on Communication Systems and Network Technologies.Rajkot,India,2012:124-127.
[6]KUMAR P,AGRAWAL A.CUDA based interactive volume rendering of 3-D medical data[M]//AGRAWAL A,TRIPATHI R C,DO E Y L.Intelligent Interactive Technologies and Multimedia.Berlin:Springer,2013:123-132.
[7]SENSENEY J,BOKINSKY A,CHENG R,et al.Java multi-histogram volume rendering framework for medical images[C]//Proceedings of SPIE 8671,Medical Imaging2013:Image-Guided Procedures,Robotic Interventions,and Modeling.Florida,United States,2013:86712J.
[8]刘天亮,罗立民.基于分割稳健而快速的局部立体匹配及医学应用[J].计算机辅助设计与图形学学报,2010,22(1):100-107.LIU Tianliang,LUO Limin.Segmentation-based,robust and fast local stereo matching with medical application[J].Journal of computer-aided design&computer graphics,2010,22(1):100-107.
[9]黄静,王希,齐东旭,等.基于二值掩码图像的图像合成方法及其应用[J].计算机辅助设计与图形学学报,2009,21(5):674-679.HUANG Jing,WANG Xi,QI Dongxu,TANG Zesheng,et al.Binary mask based image synthesis method and its applications[J].Journal of computer-aided design and computer graphics,2009,21(5):674-679.
[10]宁楠楠,刘侠,邓可欣,等.基于多角度光学投影表面重建的三维自发荧光光源定位算法[J].自动化学报,2014,40(8):1793-1803.NING Nannan,LIU Xia,DENG Kexin,et al.A 3D location method of bioluminescence light source based on multi-view projection surface reconstruction[J].Acta automatica sinica,2014,40(8):1793-1803.
[11]王娇,刘洋,张晓玲,等.Mimics软件在医学图像三维重建中的应用[J].医疗卫生装备,2015,36(2):115-118.WANG Jiao,LIU Yang,ZHANG Xiaoling,et al.Application of mimics software to 3-D reconstruction of medical image[J].Chinese medical equipment journal,2015,36(2):115-118.
[12]朱俊杰,杜小平,范湘涛,等.三种图像分割算法的对比及图像分割方法的改进[J].计算机应用与软件,2014,31(1):194-196,200.ZHU Junjie,DU Xiaoping,FAN Xiangtao,et al.Contrast of three image segmentation algorithms and improvement of image segmentation methods[J].Computer applications and software,2014,31(1):194-196,200.
[13]YE Xiufen,ZHANG Jianguo,LI Peng,et al.A fast and stable vascular deformation scheme for interventional surgery training system[J].Biomedical engineering online,2016,15:35.
[14]DIRAMI A,HAMMOUCHE K,DIAF M,et al.Fast multilevel thresholding for image segmentation through a multiphase level set method[J].Signal processing,2013,93(1):139-153.
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