Uncertainty in the positioning of patients receiving treatment for brain metastases and wearing surgical mask underneath thermoplastic mask during COVID‐19 crisis

Miura, Hideharu; Hioki, Kazunari; Ozawa, Shogo; kanemoto, Kenji; Nakao, Minoru; Doi, Yoshiko; Kenjo, Masahiko; Nagata, Yasushi

doi:10.1002/acm2.13279

Cited by 4 publications

(5 citation statements)

References 13 publications

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“…At present, in the other studies have also started to study the feasibility of patients wearing masks to receive different radiotherapy techniques. [13][14][15] In the literature, Ding et al 13 The CBCT was mainly used to measure the difference of patient's position when patient was treated using HN and HNS thermoplastic mask with/without Surgical Mask. Miura et al 14 mainly used ExacTrac positioning combined with IGRT evaluate the fixation of patients undergoing intracranial stereotactic radiosurgery and stereotactic radiotherapy (SRS/SRT) with/without surgical masks.…”

Section: Discussionmentioning

confidence: 99%

“…[13][14][15] In the literature, Ding et al 13 The CBCT was mainly used to measure the difference of patient's position when patient was treated using HN and HNS thermoplastic mask with/without Surgical Mask. Miura et al 14 mainly used ExacTrac positioning combined with IGRT evaluate the fixation of patients undergoing intracranial stereotactic radiosurgery and stereotactic radiotherapy (SRS/SRT) with/without surgical masks. Ohhira et al 15 compared the intrafractional setup error with and without a bite block during fractionated intracranial stereotactic irradiation of patients wearing medical masks.…”

Section: Discussionmentioning

confidence: 99%

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Evaluation of the Position Error of Wearing Surgical Masks During Radiotherapy in Head and Neck Cancer Patients

Chan¹,

Huang²,

Tsai³

et al. 2022

CMAR

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Wearing a mask during the coronavirus disease 2019 epidemic (COVID-19) is a preventive way to reduce droplet and aerosol transmission. The purpose of this study was to evaluate the position error of wearing a surgical mask during radiotherapy in head and neck cancer patients. Patients and Methods: We collected and analyzed 2351 kV X-ray image records of 81 patients with head and neck cancer who underwent image-guided radiotherapy (IGRT). Patients with/without a surgical mask were divided into the head-neck (HN) mask group and head-neck-shoulder (HNS) mask group. The position error in the X (left-right), Y (superior-inferior), Z (anterior-posterior), 3D (three dimensional) vectors, as well as the pitch and yaw axes were compared between the four groups. Results: We found that patients wearing surgical masks in the HN mask group showed no significant differences in the mean position error of the different types of headrest (p>0.05). In the HNS mask group, only the type C headrest group showed significant differences (P < 0.05). The X axis values were −0.05±0.07 and −0.11± 0.01 cm (P = 0.04), and the pitch axis values were 0.34±0.29° and 0.83 ±0.08° (P = 0.01). Conclusion:The mean position error of most patients wearing surgical masks was not greater than patients without a surgical mask. Patients wearing while receiving treatment is a low-cost and easy-to-implement prevention method.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Evaluation of the Position Error of Wearing Surgical Masks During Radiotherapy in Head and Neck Cancer Patients

Chan¹,

Huang²,

Tsai³

et al. 2022

CMAR

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“…18 The uncertainty in patient positioning with and without a surgical mask during thermoplastic immobilization has been studied. 19 EPID dosimetry can be used to compare the delivered fluence with planned fluence using advanced radiotherapy techniques. Various studies have shown that the accuracy of the measured fluence is equivalent to that of other measurements.…”

Section: Introductionmentioning

confidence: 99%

“…Uncertainties and variations exist in the positioning of SRS and stereotactic radiotherapy treatment techniques with non‐coplanar beams 18 . The uncertainty in patient positioning with and without a surgical mask during thermoplastic immobilization has been studied 19 . EPID dosimetry can be used to compare the delivered fluence with planned fluence using advanced radiotherapy techniques.…”

Section: Introductionmentioning

confidence: 99%

Analyzing the patient isocenter positional accuracy with portal imaging acquired at different gantry angles and its dosimetrical impact on the dose delivery for head and neck cancers

Pandu,

Khanna,

Palanisamy

et al. 2024

Precision Radiation Oncology

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ObjectiveThis study aimed to analyze the effect of different gantry angles on portal imaging in terms of isocenter shifts and their dosimetric impact on dose delivery.MethodsThirty patients with head and neck cancers were prospectively selected for this study. The reference anterior to posterior (AP) digitally reconstructed reference radiograph image was obtained at a gantry angle of 0°. The AP portal images were acquired at angles of 0°, 0.5°, 1°, 1.5°, and 2.0°. The average deviation of the isocenter shift with respect to the zero‐gantry angle was calculated. To check the dosimetric effects, the reference fluence was compared with different fluences measured at different isocenter shifts.ResultsThe average isocenter shift differences in the lateral direction were 0.7 mm, 1.3 mm, 1.9 mm, and 2.5 mm. The average difference was <±0.1 mm for isocenter shift in the longitudinal direction. The results of the statistical analysis showed that the average isocenter shift and gamma pass rate with respect to the different isocenter position errors were significant in the lateral direction.ConclusionThe results of this study showed that as the gantry angle increased, the isocenter shifted and the percentage of deviation in the lateral direction increased.

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“…Much has been written about the impact of the pandemic on medical education, including the recruitment, 21 training, 22,23 and certification 24 of medical students and residents. The impact of COVID-19 on medical physics has been widely discussed, covering topics such as general clinical practice, 25 staffing, [26][27][28] the impact of infection control measures on treatment delivery, 29,30 and academic medicine. 31 Viscariello et al 32 investigated the potential risks associated with pandemic-related radiation oncology workflow adaptations.…”

Section: Introductionmentioning

confidence: 99%

The impact of COVID‐19 on a high‐volume incident learning system: A retrospective analysis

Jacqmin

Crosby

2022

J Applied Clin Med Phys

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Purpose The purpose of this work was to assess how the coronavirus disease 2019 (COVID‐19) pandemic impacted our incident learning system data and communicate the impact of a major exogenous event on radiation oncology clinical practice. Methods Trends in our electronic incident reporting system were analyzed to ascertain the impact of the COVID‐19 pandemic, including any direct clinical changes. Incident reports submitted in the 18 months prior to the pandemic (September 14, 2018 to March 13, 2020) and reports submitted during the first 18 months of the pandemic (March 14, 2020 to September 13, 2021) were compared. The incident reports include several data elements that were evaluated for trends between the two time periods, and statistical analysis was performed to compare the proportions of reports. Results In the 18 months prior to COVID‐19, 192 reports were submitted per 1000 planning tasks (n = 832 total). In the first 18 months of the pandemic, 147 reports per 1000 planning tasks were submitted (n = 601 total), a decrease of 23.4%. Statistical analysis revealed that there were no significant changes among the data elements between the pre‐ and during COVID‐19 time periods. An analysis of the free‐text narratives in the reports found that phrases related to pretreatment imaging were common before COVID‐19 but not during. Conversely, phrases related to intravenous contrast, consent for computed tomography, and adaptive radiotherapy became common during COVID‐19. Conclusions The data elements captured by our incident learning system were stable after the onset of the COVID‐19 pandemic, with no statistically significant findings after correction for multiple comparisons. A trend toward fewer reports submitted for low‐risk issues was observed. The methods used in the work can be generalized to events with a large‐scale impact on the clinic or to monitor an incident learning system to drive future improvement activities.

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Uncertainty in the positioning of patients receiving treatment for brain metastases and wearing surgical mask underneath thermoplastic mask during COVID‐19 crisis

Cited by 4 publications

References 13 publications

Evaluation of the Position Error of Wearing Surgical Masks During Radiotherapy in Head and Neck Cancer Patients

Evaluation of the Position Error of Wearing Surgical Masks During Radiotherapy in Head and Neck Cancer Patients

Analyzing the patient isocenter positional accuracy with portal imaging acquired at different gantry angles and its dosimetrical impact on the dose delivery for head and neck cancers

The impact of COVID‐19 on a high‐volume incident learning system: A retrospective analysis

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