Abstract
Though the medical image techniques of the present day, such as CT and MRI, produce images with good quality, the great expense for necessary equipment and the long time required for obtaining image data make these techniques unhandy. Contrary to these techniques, ultrasound imaging is superior for fast imaging and low cost. And it has been one of the most important and universal diagnostic tools nowadays.2D ultrasound provides physicians with entire 2D information and makes the diagnosis more easily. But in some situations, physicians still need to spend their imagination on building up a 3D image from separated 2D images for making correct diagnosis. So, 3D ultrasound related researches have received significant attention. Although the commercial 3D ultrasound system has been carried out, it can’t provide cardiac scanning due to the mechanical design of its transducer. So we put our attention on how to build up a 3D image from 2D ultrasound images. To build up a 3D volume, we need to know all the positions of 2D slices. And how to get the positions becomes an important problem. We create a standard heart model which can be modulated. Before making 2D ultrasound scanning, we can adapt the standard model to approach the patient’s heart model. Once having the patient’s heart model, we can compute the positions where the 2D slices are in the heart model.