Research and Development of Key Technologies of Image Guidance System KylinRay-XGPS Based on X-ray Images
Image guidance is used to achieve precise positioning of patients and is an important guarantee for achieving precise treatment in fields such as radiation therapy.Due to the long time and high radiation dose for common cone-beam CT(CBCT)image guidance devices,the image guidance system KylinRay-XGPS was developed based on X-ray fluoroscopy imaging technology,in this study.With the registration of 2D-3D image based on the collected X-ray images and patient positioning CT in this system,patient registration translation and rotation errors were output to correct patient positioning errors.The key technologies of the KylinRay XGPS system included digitally reconstructed radiography(DRR)images generation by dynamic step method,parallel acceleration based on GPU,multi-modal mutual information grayscale registration,and registration methods based on bone structures.The clinical test results of KylinRay XGPS in radiation therapy show that KylinRay XGPS has the advantages of high positioning accuracy,short positioning time,and low imaging dose.
2D-3D image registrationDRRGPU parallelMutual information grayscale registrationBony structure
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