Vibration Analysis and Optimization of Mobile C-arm CT System

This paper presents vibration analysis of a mobile C-arm CT system with experimental data. The mobile C-arm CT system under investigation is a device available for three dimensional image reconstruction based on the two dimensional X-ray images generated and relevant sliding motion. This medical device is frequently exposed to vibration in its CT imaging movement, which creates negative impact on the quality of image reconstructed and precision of positioning. In experiment, vibration data is collected and analyzed under C-arm CT working motions. The corresponding new motion planning is designed and tested in experiment. According to the proved experimental data and relevant comparison, the motion planning is optimized for lower vibration amplitude, and it proves the optimized motion planning has a better results compared to the original one. This paper aims to provide suggestions for the motion planning to reduce the mechanical vibration occurred in mobile C-arm CT working condition.