Implementation of double-C-arm synchronous real-time X-ray positioning system computer aided for aspiration biopsy of small lung lesion

Abstract

Objective To evaluate the feasibility of a new type of real-time three-dimensional X-ray positioning system for aspiration biopsy of small lung lesions.Methods Using X-ray imaging technology and X-ray collimator technology and combining with double-C-ann X-ray machine,two different synchronous real-time images were obtained from the vertical to the horizontal plane.Then,with the computer image processing and computer vision processing technologies,dynamic tracking for 3D information of a pulmonary lesion and the needle in aspiration,and the relative position of the two,were established.Results There was no interference while the two imaging perpendicularly X-ray beam met,two synchronous real-time image acquisition and tracking of a lung lesion and a needle could be completed in free respiration.The average positioning system error was about 0.5 mm,the largest positioning error was about 1.0 mm,real-time display rate was 5 screen/sec.Conclusions the establishment of a new type of double-C-ann synchronous real-time X-ray positioning system is feasible.It is available for the fast and accurate aspiration biopsy of small lung lesions.