2D/3D Registration Of Medical Image And Visualization

The goal of image registration is to obtain a transformation, so that the points inone image can be related to their corresponding points in the other. In the medicalfield, registration is used for medical image(CT, MR, PET) fusion, the imagesbetween patient and normal personal need to be compared, Surgical operationnavigation, or heart movement estimate, and so on. Medical Image registration is thepremise of fusion and hot spot in medical image processing. So it is very importantin diagnosis and treatment. And 2D/3D medical image ,registration is becomingincreasingly important because of it's function in computer-guided diagnosis,Surgical operation navigation and so on. In these using, image registration is aimportant part. Registration between Volume data and 2D image provide real-timeinformation for diagnosis and treatment, so it can aid surgery navigation, we usuallyget 3D data before surgery and obtain 2D image during the surgery. Although 2Ddata is deficient in spatial information, it can get quickly and decrease exposure timein X-ray. Some spatial information will be retrieved after 2D/3D registration. Atpresent, researcher pay more effort on rigid registration. In this paper ,weemphatically research on 2D/3D medical image registration ,and it's using in bonesurgery.Digitally Reconstructed Radiography play a key part in 2D/3D medical imageregistration based on gray. It obtain 2D virtual X-ray image from 3D data such as CT,using ray-casting algorithm. The quality of DRR image directly influence theprecision of registration. This paper discussed the technology of DRR, realized DRRfrom CT volume data. In addition, we use intensification method to reconstructimage which is prominent bones.With the development of medical imagery equipment and computer, the speedof imagery is more and more quickly. Only reading 2D image is increasingly notenough for clinical. So the visualization of medical image become more important. VTK is a good visualization toolkit. It is powerful, convenience, and open sourcecode. we research the visualization algorithm and use VTK to realized a medicalthree dimensional visualization system based on fPAX platform.