Abstract

Info

Title:: Freehand three-dimensional ultrasound image reconstruction system based on binocular infrared camera positioning

Author(s):: CHEN Zeyu; GE Yun; CHEN Ying; HUANG Xiaolin; LI Weifeng; School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, China

Abstract:: Abstract: Objective To design and implement a freehand three-dimensional (3D) ultrasound image reconstruction system which can perform 3D reconstruction and display interaction on the two-dimensional ultrasound image array acquired by freehand method. Methods The system uses a binocular infrared camera and its matching measurement tools. By fixing positioning balls on the ultrasound probe, the binocular infrared camera could track the spatial position of the probe in real time so as to obtain the relative relationship of the ultrasound image array. Besides, the transformation matrix was calculated by software based on the real-time probe position, and then the 3D volume grid was filled based on the data of the ultrasound image array. Finally, the 3D image was obtained using ray casting algorithm. Results The system realized the acquisition and storage of ultrasound image array, the delineation of the region of interest on the ultrasound image as well as 3D reconstruction and visualization. Conclusion The freehand three-dimensional ultrasound image reconstruction system based on binocular infrared camera positioning proposed in the study lays a good foundation for future clinical application and scientific research.