Radiotherapy-customized head immobilization masks: from modeling and analysis to 3D printing

Loja, M. A. R.; Craveiro, D. S.; Vieira, Lina; Sousa, Eva; Rodrigues, José Alberto Domingues; Portal, Ricardo

doi:10.1007/s41365-019-0667-2

Cited by 11 publications

(11 citation statements)

References 10 publications

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“…The present technology could also be implemented in nuclear medicine and imaging departments. For example, some PET head or abdomen acquisitions can take up to 30 min [ 7 , 28 , 29 , 30 ]. According to Mantlik et al [ 7 ], PET/MR imaging requires the use of devices to assist patient immobilization and positioning for the entire duration.…”

Section: Discussionmentioning

confidence: 99%

3D Printing of Abdominal Immobilization Masks for Therapeutics: Dosimetric, Mechanical and Financial Analysis

et al. 2022

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Molding immobilization masks is a time-consuming process, strongly dependent on the healthcare professional, and potentially uncomfortable for the patient. Thus, an alternative sustainable automated production process is proposed for abdominal masks, using fused deposition modelling (FDM) 3D printing with polylactic acid (PLA). Radiological properties of PLA were evaluated by submitting a set of PLA plates to photon beam radiation, while estimations of their mechanical characteristics were assessed through numerical simulation. Based on the obtained results, the abdominal mask was 3D printed and process costs and times were analyzed. The plates revealed dose transmissions similar to the conventional mask at all energies, and mechanical deformation guarantees the required immobilization, with a 66% final cost reduction. PLA proved to be an excellent material for this purpose. Despite the increase in labour costs, a significant reduction in material costs is observed with the proposed process. However, the time results are not favorable, mainly due to the printing technique used in this study.

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Section: Discussionmentioning

confidence: 99%

3D Printing of Abdominal Immobilization Masks for Therapeutics: Dosimetric, Mechanical and Financial Analysis

et al. 2022

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“…AM is not new to radiation therapy nor limited to BT. Bolus [26], phantoms [27], immobilizers [28], and field-shaping devices [29] are a few of the other areas in RT, where AM technology has been incorporated. AM applicators are an attractive solution, as they enable almost exact replica of a patient's surface as well as fully customizable catheter tracks.…”

Section: Clinical Need For Additive Manufacturing Applicatorsmentioning

confidence: 99%

Additive manufacturing (3D printing) in superficial brachytherapy

Bellis¹,

Rembielak²,

Barnes³

et al. 2021

jcb

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The aim of this work is to provide an overview of the current state of additive manufacturing (AM), commonly known as 3D printing, within superficial brachytherapy (BT). Several comprehensive database searches were performed to find publications linked to AM in superficial BT. Twenty-eight core publications were found, which can be grouped under general categories of clinical cases, physical and dosimetric evaluations, proof-of-concept cases, design process assessments, and economic feasibility studies. Each study demonstrated a success regarding AM implementation and collectively, they provided benefits over traditional applicator fabrication techniques. Publications of AM in superficial BT have increased significantly in the last 5 years. This is likely due to associated efficiency and consistency benefits; though, more evidences are needed to determine the true extent of these benefits.

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“…To reduce the air gaps, the 3D printing technology has been used in fabricating boluses considering its ability of precisely customizing boluses (Aoyama et al, 2020;Dai et al, 2020). The 3D printing technology is also used for other purposes in radiotherapy, such as fabricating bite block (Huang et al, 2020;Zaid et al, 2018), fabricating masks for immobilizing patients (Loja et al, 2019), and printing phantoms for radiotherapy QA procedures (Madamesila et al, 2016;Quiñones et al, 2018). Preliminary studies of 3D printing customized boluses using hard materials like Polylactic Acid (PLA) for breast cancer radiotherapy are reported (Park et al, 2016;Robar et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

The possibility of developing customized 3D-printed silicone hydrogel bolus for post-mastectomy radiotherapy

Zhang

Zhou

et al. 2021

Journal of Radiation Research and Applied Sciences

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3D printing technology is widely used for fabricating bolus in post-mastectomy radiotherapy. 3D printed boluses are usually made from hard materials like Polylactic Acid, which can't adhere to patients' skin perfectly in clinical practice because of the patients' uneven surfaces of chest walls and large radiotherapy area. In this work, the feasibility of 3D printing soft selfadhesion boluses using water tissue equivalent silicone hydrogel material in post-mastectomy radiotherapy was studied, and intensity modulated radiotherapy plans were designed to study the performance of the water tissue equivalent silicone hydrogel bolus by comparing to the results of using virtual boluses with the relative electron density of 1.09 in radiotherapy. The comparison demonstrated that water tissue equivalent silicone hydrogel boluses have better adhesive property than boluses made from hard materials. The average air gap volume between the water tissue equivalent silicone hydrogel bolus and patients' skin is 9.5 cc. The average degree of adhesion and average maximuum air cavity dimension are 3.7% and 4.3 mm, respectively. The dose distribution of the virtual bolus and the water tissue equivalent silicone hydrogel bolus are roughly the same in Dose Volume Histogram.

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Radiotherapy-customized head immobilization masks: from modeling and analysis to 3D printing

Cited by 11 publications

References 10 publications

3D Printing of Abdominal Immobilization Masks for Therapeutics: Dosimetric, Mechanical and Financial Analysis

3D Printing of Abdominal Immobilization Masks for Therapeutics: Dosimetric, Mechanical and Financial Analysis

Additive manufacturing (3D printing) in superficial brachytherapy

The possibility of developing customized 3D-printed silicone hydrogel bolus for post-mastectomy radiotherapy

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