التفاصيل البيبلوغرافية
| العنوان: |
Evaluation of a novel patient-specific quality assurance phantom for robotic single-isocentre, multiple-target stereotactic radiosurgery, and stereotactic radiotherapy. |
| المؤلفون: |
Xu, Qianyi, Vinogradskiy, Yevgeniy, Grimm, Jimm, Nie, Wei, Dupre, Pamela, Chawla, Ashish K, Bajaj, Gopal, Yang, Haihua, LaCouture, Tamara, Fan, Jiajin |
| المصدر: |
British Journal of Radiology; Mar2024, Vol. 97 Issue 1155, p660-667, 8p |
| مصطلحات موضوعية: |
STEREOTACTIC radiotherapy, STEREOTACTIC radiosurgery, QUALITY assurance, SURGICAL robots, ROBOTICS, TRACKING radar |
| مستخلص: |
Objectives To evaluate patient-specific quality assurance (PSQA) of 3 targets in a single delivery using a novel film-based phantom. Methods The phantom was designed to rotate freely as a sphere and could measure 3 targets with film in a single delivery. After identifying the coordinates of 3 targets in the skull, the rotation angles about the equator and meridian were computed for optimal phantom setup, ensuring the film plane intersected the 3 targets. The plans were delivered on the CyberKnife system using fiducial tracking. The irradiated films were scanned and processed. All films were analysed using 3 gamma criteria. Results Fifteen CyberKnife test plans with 3 different modalities were delivered on the phantom. Both automatic and marker-based registration methods were applied when registering the irradiated film and dose plane. Gamma analysis was performed using a 3%/1 mm, 2%/1 mm, and 1%/1 mm criteria with a 10% threshold. For the automatic registration method, the passing rates were 98.2% ± 1.9%, 94.2% ± 3.7%, and 80.9% ± 6.3%, respectively. For the marker-based registration approach, the passing rates were 96.4% ± 2.7%, 91.7% ± 4.3%, and 78.4% ± 6.2%, respectively. Conclusions A novel spherical phantom was evaluated for the CyberKnife system and achieved acceptable PSQA passing rates using TG218 recommendations. The phantom can measure true-composite dose and offers high-resolution results for PSQA, making it a valuable device for robotic radiosurgery. Advances in knowledge This is the first study on PSQA of 3 targets concurrently on the CyberKnife system. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
