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[Segmented Time Study and Optimization Strategy for Clinical Application of Ethos Online Adaptive Radiotherapy]
Dandan Zhang1, Yuhan Kou1, Shilong Zhu1
1Radiotherapy Department, First Medical Center, Chinese PLA General Hospital, Beijing, 100853.
Objective:
To analyze the time characteristics of the Ethos online adaptive radiotherapy (OART) process in clinical practice and provide guidance for the comprehensive optimization of each stage of adaptive radiotherapy.
Methods:
The study involved 61 patients with cervical, rectal, gastric, lung, esophageal, and breast cancers who underwent Ethos OART. The mean ± standard deviation of segmental time, total time, and target volume for these patients were tracked. The time characteristics for different cancer types were evaluated, and the average time for target and organ at risk (OAR) modifications was compared with the average target volume for each cancer type.
Results:
Cervical cancer born the longest total treatment time, while breast cancer had the shortest. For all cancer types except breast cancer, the modification time for target and OAR was the most time-consuming segment. The average time for target and OAR modifications aligned with the trend of the average target volume.
Conclusion:
The total treatment time for various cancers ranges from 15 to 35 minutes, indicating room for improvement.
