A feasibility study of a hybrid breast-immobilization system for early breast cancer in proton beam therapy

Arimura, Takeshi; Ogino, Takashi; Yamada, Takashi; Matsuyama, M.; Kondo, Naoaki; Miyazaki, Hideki T.; Sakuragi, Akari; Ohara, Takayuki; Ogo, Etsuyo; Hishikawa, Yoshio

doi:10.1002/mp.12166

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…A pre-clinical feasibility study by Arimura et al reported the development of a hybrid breast immobilisation system for proton therapy. Combining whole body immobilisation with a 3D-printed breast cup has been shown to achieve a high level of breast stability, including mitigation of respiratory motion in preliminary results [67] . In a similarly specialised context, Snider et al carried out a planning study of 15 patients testing a breast-specific stereotactic treatment machine, the GammaPod.…”

Section: Results Recommendations and Considerationsmentioning

confidence: 99%

ESTRO-ACROP guideline for positioning, immobilisation and setup verification for local and loco-regional photon breast cancer irradiation

Mast,

Leong,

Korreman

et al. 2023

Technical Innovations & Patient Support in Radiation Oncolo

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Section: Results Recommendations and Considerationsmentioning

confidence: 99%

ESTRO-ACROP guideline for positioning, immobilisation and setup verification for local and loco-regional photon breast cancer irradiation

Mast,

Leong,

Korreman

et al. 2023

Technical Innovations & Patient Support in Radiation Oncolo

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“…The proposed workflow allows for the production of aperture cut‐outs without dedicated foam cutting equipment and without dedicated foam material, both of which may represent a significant cost in terms of monetary or storage resources. Instead, a single, relatively inexpensive and versatile 3D printer with a single raw material can be used to create a wide range of patient‐specific treatment auxiliaries besides the molds for aperture cut‐out production, such as individualized bolus,11 dosimetry phantoms,12 and immobilization 13. In addition, the proposed workflow allows for introduction of a number of measures to enhance safety and quality in the aperture production process, including patient identification and accurate, error‐free alignment during casting.…”

Section: Discussionmentioning

confidence: 99%

“…An increasing number of radiation oncology centers have a 3D printer available on‐site, for instance to create individualized bolus,11 dosimetry phantoms12 and immobilization 13. 3D printing likewise allows to produce the molds for the production of patient‐specific aperture cut‐outs.…”

Section: Introductionmentioning

confidence: 99%

Production of patient‐specific electron beam aperture cut‐outs using a low‐cost, multi‐purpose 3D printer

Michiels

Mangelschots

Roover

et al. 2018

J Applied Clin Med Phys

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Electron beam collimators for non‐standard field sizes and shapes are typically fabricated using Styrofoam molds to cast the aperture cut‐out. These molds are often produced using a dedicated foam cutter, which may be expensive and only serves a single purpose. An increasing number of radiotherapy departments, however, has a 3D printer on‐site, to create a wide range of custom‐made treatment auxiliaries, such as bolus and dosimetry phantoms. The 3D printer can also be used to produce patient‐specific aperture cut‐outs, as elaborated in this note. Open‐source programming language was used to automatically generate the mold's shape in a generic digital file format readable by 3D printer software. The geometric mold model has the patient's identification number integrated and is to be mounted on a uniquely fitting, reusable positioning device, which can be 3D printed as well. This assembly likewise fits uniquely onto the applicator tray, ensuring correct and error‐free alignment of the mold during casting of the aperture. For dosimetric verification, two aperture cut‐outs were cast, one using a conventionally cut Styrofoam mold and one using a 3D printed mold. Using these cut‐outs, the clinical plan was delivered onto a phantom, for which the transversal dose distributions were measured at 2 cm depth using radiochromic film and compared using gamma‐index analysis. An agreement score of 99.9% between the measured 2D dose distributions was found in the (10%–80%) dose region, using 1% (local) dose‐difference and 1.0 mm distance‐to‐agreement acceptance criteria. The workflow using 3D printing has been clinically implemented and is in routine use at the author's institute for all patient‐specific electron beam aperture cut‐outs. It allows for a standardized, cost‐effective, and operator‐friendly workflow without the need for dedicated equipment. In addition, it offers possibilities to increase safety and quality of the process including patient identification and methods for accurate mold alignment.

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Evaluation of a 3D-printed heterogeneous anthropomorphic head and neck phantom for patient-specific quality assurance in intensity-modulated radiation therapy

Abe

Nemoto

Sato

et al. 2019

Radiol Phys Technol

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A feasibility study of a hybrid breast-immobilization system for early breast cancer in proton beam therapy

Abstract: We demonstrated that the HyBIS can help retain the protruded breast shape in the supine position during treatment and can reduce the influence of respiratory movement. Thus, the HyBIS can help to reliably and precisely perform PBT for EBC.

Cited by 3 publications

References 24 publications

ESTRO-ACROP guideline for positioning, immobilisation and setup verification for local and loco-regional photon breast cancer irradiation

ESTRO-ACROP guideline for positioning, immobilisation and setup verification for local and loco-regional photon breast cancer irradiation

Production of patient‐specific electron beam aperture cut‐outs using a low‐cost, multi‐purpose 3D printer

Evaluation of a 3D-printed heterogeneous anthropomorphic head and neck phantom for patient-specific quality assurance in intensity-modulated radiation therapy

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