Intra-fractional patient setup error during fractionated intracranial stereotactic irradiation treatment of patients wearing medical masks: comparison with and without bite block during COVID-19 pandemic
| Autor: | Teruki Teshima, Masayasu Toratani, Masahiko Koizumi, Masayoshi Miyazaki, Shingo Ohira, Naoyuki Kanayama, Riho Komiyama, Toshiki Ikawa, Yoshihiro Ueda, Hayate Washio |
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| Rok vydání: | 2020 |
| Předmět: |
Adult
Male Coronavirus disease 2019 (COVID-19) Health Toxicology and Mutagenesis medicine.medical_treatment Intra-fractional patient setup error Computed tomography Context (language use) Radiotherapy Setup Errors Radiosurgery Patient Positioning 030218 nuclear medicine & medical imaging Immobilization intracranial stereotactic irradiation 03 medical and health sciences 0302 clinical medicine Regular Paper medicine Humans Radiology Nuclear Medicine and imaging Pandemics Aged Retrospective Studies Aged 80 and over Dose delivery Radiation medicine.diagnostic_test Brain Neoplasms business.industry Radiotherapy Planning Computer-Assisted Masks bite-block COVID-19 Equipment Design Middle Aged 030220 oncology & carcinogenesis AcademicSubjects/SCI00960 Female Dose Fractionation Radiation AcademicSubjects/MED00870 Bite block Cranial Irradiation Tomography X-Ray Computed Nuclear medicine business Stereotactic irradiation |
| Zdroj: | Journal of Radiation Research |
| ISSN: | 1349-9157 0449-3060 |
| Popis: | The immobilization of patients with a bite block (BB) carries the risk of interpersonal infection, particularly in the context of pandemics such as COVID-19. Here, we compared the intra-fractional patient setup error (intra-SE) with and without a BB during fractionated intracranial stereotactic irradiation (STI). Fifteen patients with brain metastases were immobilized using a BB without a medical mask, while 15 patients were immobilized without using a BB and with a medical mask. The intra-SEs in six directions (anterior–posterior (AP), superior–inferior (SI), left–right (LR), pitch, roll, and yaw) were calculated by using cone-beam computed tomography images acquired before and after the treatments. We analyzed a total of 53 and 67 treatment sessions for the with- and without-BB groups, respectively. A comparable absolute mean translational and rotational intra-SE was observed (P > 0.05) in the AP (0.19 vs 0.23 mm with- and without-BB, respectively), SI (0.30 vs 0.29 mm), LR (0.20 vs 0.29 mm), pitch (0.18 vs 0.27°), roll (0.23 vs 0.23°) and yaw (0.27 vs 22°) directions. The resultant planning target volume (PTV) margin to compensate for intra-SE was |
| Databáze: | OpenAIRE |
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