Non-rigid Registration Method between 3D CT Liver Data and 2D Ultrasonic Images based on Demons Model
This is an incremental improvement for medical imaging in liver surgery, enhancing registration accuracy to facilitate diagnosis and treatment.
The paper tackled the problem of non-rigid registration between 3D CT liver data and 2D ultrasonic images to improve accuracy for diagnosis and treatment, achieving higher accuracy than existing Demons methods with an operation time of about 30 seconds.
The non-rigid registration between CT data and ultrasonic images of liver can facilitate the diagnosis and treatment, which has been widely studied in recent years. To improve the registration accuracy of the Demons model on the non-rigid registration between 3D CT liver data and 2D ultrasonic images, a novel boundary extraction and enhancement method based on radial directional local intuitionistic fuzzy entropy in the polar coordinates has been put forward, and a new registration workflow has been provided. Experiments show that our method can acquire high-accuracy registration results. Experiments also show that the accuracy of the results of our method is higher than that of the original Demons method and the Demons method using simulated ultrasonic image by Field II. The operation time of our registration workflow is about 30 seconds, and it can be used in the surgery.