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A Method of Nomenclature Standardization in Radiotherapy for Difference Tumors

Y You1*, W Zheng1 , S Huang1 , Z Zheng1 , Y Tao2 , X Huang2 , X Yang2 , Y Xia2 , (1) Xin Hua College of Sun Yat-Sen University, Guangzhou 510520, China, (2) State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Caner Medicine, Department of Radiation Therapy, Sun Yat-sen University Cancer Center, Guangzhou 510060, China


(Wednesday, 8/1/2018) 9:30 AM - 10:00 AM

Room: Exhibit Hall | Forum 6

Purpose: To develop a software tool to standardization of structure nomenclature in radiotherapy (RT) for different tumors. Standardization has multiple benefits, such as improving the consistency and the clarity in the RT implementation. We proposed the method for the standardized nomenclatures and validate it in difference tumors.

Methods: We randomly selected 139 H&N plans, 152 cervical tumor plans and 29 plans of prostate tumor. RT structure files were parsed and analyzed through the MATLAB via self-developed software firstly. Secondly all the structures were classified by the keywords including targets, organs at risk (OAR), derivative and planning structures automatically. And then the classified structures nomenclatures were analyzed statistically. Thirdly, formulate the standardization protocol of nomenclatures based on the AAPM TG263 report. Finally, we programmed the transformation of the nomenclatures and export the structure as a new DICOM RT file, which could be import into TPS. This method was tested and validated in three tumors.

Results: There were 7044 and 1804 structures in H&N and cervical tumor, 580 structures in prostate tumor in total, with each patient having 50.68±15.43 structures (minimum 7, maximum 85) , 11.87±2.39 structures (minimum 4, maximum 18) and 20.00±4.77 structures (minimum 12, maximum 28), respectively. There are different nomenclatures preferences. For organs, the most various nomenclatures in H&N is OPTIC CHIASM (e.g., OR OPchiasm, OR OP Nerve-Chia, OR Chiasma, etc.), while both cervical tumor and prostate tumor have different SMALL INTESTINE names (e.g., small intestine, Small Bowel, etc.). After the standardization, they could be unified as one in the nomenclature.

Conclusion: A structure nomenclatures standardization method was proposed in this paper, which could be used for the difference tumors. nomenclatures standardization can help to avoid confusion from inconsistency and inadequacy of nomenclatures, errors; enable and improve the quality and safety in medicine.


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