دورية أكاديمية
Dose measurement of optic chiasm and parotid organs using OCTAVIUS 4D phantom: a dynamic IMRT method for nasopharyngeal cancer treatment
| العنوان: | Dose measurement of optic chiasm and parotid organs using OCTAVIUS 4D phantom: a dynamic IMRT method for nasopharyngeal cancer treatment |
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| المؤلفون: | Laya Karimkhani, Elham Saeedzadeh, Dariush Sardari, Seied Rabi Mahdavi |
| المصدر: | Informatics in Medicine Unlocked, Vol 46, Iss , Pp 101479- (2024) |
| بيانات النشر: | Elsevier, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Computer applications to medicine. Medical informatics |
| مصطلحات موضوعية: | Optic chiasm, Parotid, Intensity-modulated radiation therapy, Nasopharyngeal cancer, OCTAVIUS 4D phantom, Computer applications to medicine. Medical informatics, R858-859.7 |
| الوصف: | Introduction: In intensity-modulated radiation therapy (IMRT) techniques, although the dose conformity increases, the out-of-field doses would not decrease. This study aimed to assess the dose error calculated by the treatment planning system (TPS) in the out-of-field regions using the dynamic IMRT (D-IMRT) method in nasopharyngeal cancer (NPC) patients. Methods: The out-of-field doses were measured for the chiasm and parotid organs using the D-IMRT technique (6 MV energy) with Monaco TPS. Computed tomography (CT) images of 10 NPC patients (54–77 years, mean: 61.6 ± 12.2 years) were considered and countered using 7-field and 11-field methods. The OCTAVIUS 4D phantom was utilized for dose assessment. Results: According to the OCTAVIUS measurements, the Monaco TPS dose errors ranged from −58.8 to 105.5%. The average dose error for optic chiasm and parotid organs was −25% and 8.5%, respectively, with several cases falling within tolerance (±5%). Conclusion: There were considerable dose calculation errors by Monaco TPS for organs located in out-of-field regions (optic chiasm and parotid) during IMRT for NPC patients. Therefore, accurate dose estimation in the out-of-field regions should be considered in clinical practices. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2352-9148 31444695 |
| العلاقة: | http://www.sciencedirect.com/science/article/pii/S2352914824000352Test; https://doaj.org/toc/2352-9148Test |
| DOI: | 10.1016/j.imu.2024.101479 |
| الوصول الحر: | https://doaj.org/article/5f3cde29fa314446950af63a2d2a3dddTest |
| رقم الانضمام: | edsdoj.5f3cde29fa314446950af63a2d2a3ddd |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 23529148 31444695 |
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| DOI: | 10.1016/j.imu.2024.101479 |