A comparative study between open-face and closed-face masks for head and neck cancer (HNC) in radiation therapy

Mulla, Zaheeda; Al‐Wassia, Rolina; Senan, E.; Soaida, Shamel; Mohamed, A.A.; Almerdhemah, Hussain; Iqbal, Hafiz Asif; Muamenah, Hane Mohammad

doi:10.1016/j.rpor.2020.03.009

Cited by 10 publications

(5 citation statements)

References 9 publications

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“…The step-by-step workflow from simulation to treatment was detailed, and the initial setup errors derived from CBCT guidance were statistically analyzed. Compared with previous studies [ 14 , 16 , 22 , 25 ], the proposed surface guided setup procedure achieved the highest setup accuracy of < 3 mm in all translation directions and < 2-degree in rotational directions.…”

Section: Discussionmentioning

confidence: 65%

“…To circumvent this issue, open-face masks compatible with SGRT have been developed. Wiant et al [ 14 ] and Mulla et al [ 22 ] compared clinical performance between closed masks and open-face masks for HN radiotherapy. While the two studies were performed independently and the open-face masks involved were provided by two different vendors, identical conclusions were drawn: compared with closed masks, open-face masks provide comparable immobilization yet with reduced patient discomfort and anxiety.…”

Section: Introductionmentioning

confidence: 99%

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Initial clinical experience of surface guided stereotactic radiation therapy with open-face mask immobilization for improving setup accuracy: a retrospective study

Zhou

Zhu

et al. 2022

Radiat Oncol

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Purpose To propose a specific surface guided stereotactic radiotherapy (SRT) treatment procedure with open-face mask immobilization and evaluate the initial clinical experience in improving setup accuracy. Methods and materials The treatment records of 48 SRT patients with head lesions were retrospectively analyzed. For each patient, head immobilization was achieved with a double-shell open-face mask. The anterior shell was left open to expose the forehead, nose, eyes and cheekbones. The exposed facial area was used as region-of-interest for surface tracking by AlignRT (VisionRT Inc, UK). The posterior shell provided a sturdy and personalized headrest. Patient initial setup was guided by 6DoF real-time deltas (RTD) using the reference surface obtained from the skin contour delineated on the planning CT images. The endpoint of initial setup was 1 mm in translational RTD and 1 degree in rotational RTD. CBCT guidance was performed to derive the initial setup errors, and couch shifts for setup correction were applied prior to treatment delivery. CBCT couch shifts, AlignRT RTD values, repositioning rate and setup time were analyzed. Results The absolute values of median (maximal) CBCT couch shifts were 0.4 (1.3) mm in VRT, 0.1 (2.5) mm in LNG, 0.2 (1.6) mm in LAT, 0.1(1.2) degree in YAW, 0.2 (1.4) degree in PITCH and 0.1(1.3) degree in ROLL. The couch shifts and AlignRT RTD values exhibited highly agreement except in VRT and PITCH (p value < 0.01), of which the differences were as small as negligible. We did not find any case of patient repositioning that was due to out-of-tolerance setup errors, i.e., 3 mm and 2 degree. The surface guided setup time ranged from 52 to 174 s, and the mean and median time was 97.72 s and 94 s respectively. Conclusions The proposed surface guided SRT procedure with open-face mask immobilization is a step forward in improving patient comfort and positioning accuracy in the same process. Minimized initial setup errors and repositioning rate had been achieved with reasonably efficiency for routine clinical practice.

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Section: Discussionmentioning

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Initial clinical experience of surface guided stereotactic radiation therapy with open-face mask immobilization for improving setup accuracy: a retrospective study

Zhou

Zhu

et al. 2022

Radiat Oncol

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“…It was not indicated whether the valves have a closing mechanism. 16,43 Benefit of double masking Double masking improves mask fitting and blockage of cough aerosol droplets by surgical and cloth masks improved by 90% which was higher than the filtration of cloth masks. 15 Double masking a cloth mask with a nonwoven layer over a surgical mask was reported to show no significant improvement in the filtration efficiency.…”

Section: Mask Fit and Comfortmentioning

confidence: 99%

The use of fibrous face masks as a barrier against infectious biological airborne particles

Maduna,

Patnaik

2023

Journal of Industrial Textiles

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The Covid-19 pandemic has created a global health crisis which has affected the economic and social development. Infectious airborne particles are transmitted via direct contact or inhalation. In order to reduce the infection rates, face masks such as cloth, surgical and filtering facepiece respirator masks are being used as a nonpharmaceutical intervention. Face cloth masks are recommended for public use due the global shortages of traditional single use surgical and filtering facepiece respirators. Decontamination of masks for reuse is also being suggested in order to address the shortages and environmental pollution. Single use masks are disposed after one-time use and pose an environmental and health risk if not properly disposed. Incinerating masks releases toxic gases during combustion. Contaminated masks can be treated with heat, ultraviolet, chemicals and antimicrobial agents to deactivate microbial particles. The protection provided by masks can be compromised if the decontamination method damages the structural integrity, and heat and chemicals have been reported to cause this. When electrostatic charged masks are exposed to water and chemicals, they lose their electrostatic charge and as result their filtration efficiency decreases. Mask’s filtration efficiency from the highest to the lowest is in the order filtering facepiece respirator, surgical and cloth. Because masks act as a barrier and they cause breathability difficulty which is associated with the discomfort experience for the wearer. Breathability from the highest to the lowest is in the order cloth, surgical and filtering facepiece respirator.

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“…These typically leave the forehead, eyes and nose uncovered. In head and neck cancer radiotherapy open masks have already been investigated and studies showed no significant immobilization difference compared to closed mask systems [2] , [3] , [4] .…”

Section: Introductionmentioning

confidence: 99%

Intrafractional monitoring of patients using four different immobilization mask systems for cranial radiotherapy

Reitz

Muecke

Mendes

et al. 2022

Physics and Imaging in Radiation Oncology

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A comparative study between open-face and closed-face masks for head and neck cancer (HNC) in radiation therapy

Cited by 10 publications

References 9 publications

Initial clinical experience of surface guided stereotactic radiation therapy with open-face mask immobilization for improving setup accuracy: a retrospective study

Initial clinical experience of surface guided stereotactic radiation therapy with open-face mask immobilization for improving setup accuracy: a retrospective study

The use of fibrous face masks as a barrier against infectious biological airborne particles

Intrafractional monitoring of patients using four different immobilization mask systems for cranial radiotherapy

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