Research Of Three-dimensional Extend Field-of-View Ultrasound Imaging Technology

Medical ultrasound imaging technology is real-time, noninvasive, painless and low-cost. Soit has been recognized as one of main medical imaging technology. With the rapiddevelopment of computer technology, electronics and information technology, ultrasoundtechnology has been improved greatly. In recent years, three-dimensional ultrasound imagingtechnology has become an important direction of ultrasound imaging technology. Breakingthrough some of the limitations of the traditional two-dimensional ultrasound images inclinical application, three-dimensional ultrasound imaging technology can providehigh-resolution and high-quality images to diagnosis and also offers a variety of measurementfunctions.The three-dimensional ultrasound technology is based on two-dimensional ultrasoundtechnology. A high-quality three-dimensional ultrasound image needs high-qualitytwo-dimensional images. Due to the width and scanning angle of ultrasonic probe is restricted.It is difficult to display a full image observation organization in two-dimensional ultrasonicimage acquisition processing. And this will affect the diagnosis. In order to address thisproblem, Weng firstly proposed an EFOV technology. In the EFOV, a sequence of images isacquired during a real-time scan, and then merged together using the method of imageregistration to provide a panoramic and easily interpretable image. With the development ofthree-dimensional ultrasonic data acquisition technology, the data acquisition way ofmanipulator becomes more and more commercialized. However this way also has thelimitation of probe width and scanning angle. It is difficult to get measured organization’scomplete image for a large organ. So we should introducethe Panoramic Imaging technologybased on two-dimensional image to the ultrasound3D ultrasound images.In the current research of three-dimensional ultrasonic wide view imaging technology, lotsof methods still need to use position sensors to get mobile location information of the probeand have the problem of long computation time. Considering these two problems, in thispaper, we put forward a new three dimensional wide view imaging technology, which basedon multi-template sub-cubic blocks. The technology no longer uses the position sensor. It onlydepends on the three-dimensional image information in the process of image registration.Multi-template sub-cubic blocks method based on image features can effectively guaranteeregistration accuracy. Experimental results show that the proposed method can perform theprocess of image registration very well, and can also ensure the accuracy of image registration.In the end, the proposed algorithm can result in a good three-dimensional ultrasound wide panoramic image from phantom data and humen data.