Abstract

Info

Title:: Real-time tracking technique of target respiratory motion in interventional therapy

Author(s):: SUN Baiquan1; CHENG Yunzhang1; CAI Keyao2; 1.School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
2.Shanghai Elephant Medical Technology Company Limited, Shanghai 200093, China

Keywords:: ; real-time tracking; respiratory motion; interventional therapy; target displacement

Abstract:: The progress of real-time tracking of respiratory motion in target area is reviewed. Firstly, the traditional method for obtaining internal-external respiration signals is described; the method for respiration signals signal extraction in present are compared in details; and the method using CO2 concentration for obtaining respiratory motion signals is proposed. Then, the internal-external respiratory signals correlation model is mainly studied by classifying and analyzing the correlation models at this stage and comparing their advantages and disadvantages. In simulation and practical applications, the researchers find that the accuracy of the respiratory replacement signals greatly affects the accuracy of the correlation model, and that the simple correlation model is incapable of describing the complex respiratory motion. Thus the establishment of a complex correlation model is needful for a more accurate description. Finally, the problems of real-time tracking technology of target respiratory motion and the future development trend are analyzed.