Three-dimensional blood vessel modeling method considering ivus catheter insertion

Abstract

In this paper, we propose a new 3D (three-dimensional) blood vessel modeling method for FSI (fluid-structure interaction) analysis. Because of the nature of medical images, a 3D blood vessel model that includes intima and adventitia cannot be reconstructed using a single medical image. Many researchers have used IVUS (intravascular ultrasound) images to obtain detailed intima and adventitia information and X-ray angiogram images to calculate the position and orientation of IVUS images. By combining these types of medical images, 3D blood vessel model can be generated. However, when an IVUS image is taken, a catheter attached to a miniaturized ultrasound device is inserted into the blood vessel, so the shape of the blood vessel is deformed. The resulting 3D blood vessel model developed by combining the IVUS and X-ray angiogram images reflects the deformation of the blood vessel by the IVUS catheter. To solve this problem, we propose a novel method for 3D blood vessel modeling using undeformed intima and adventitia information obtained with an IVUS catheter.