Predicting the required thickness of custom shielding materials in kilovoltage radiotherapy beams

Crowe, Scott; Charles, Paul; Cassim, Naasiha; Maxwell, Shawn; Sylvander, Steven; Smith, Jye; Kairn, Tanya

doi:10.1016/j.ejmp.2020.12.008

Cited by 6 publications

(2 citation statements)

References 26 publications

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“…8 Purpose-built optical surface scanning systems, such as stereo depth scanners 13 and structured light scanners, 1,2,6,8 are able to produce precise and accurate models of anatomy, suitable for patient-matched 3D-printed devices. Combined with computer-aided design (CAD) software, simple devices, such as uniform thickness bolus or shields 14 or nose blocks, can be easily created. The design of complex devices (such as non-uniform compensators) can require the use of a treatment-planning system including a dose calculation engine, which can be achieved through the creation of pseudo-CT dataset 11,15 or where the treatment planning system supports the STL format (e.g.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of optical 3D scanning system for radiotherapy use

Crowe

Luscombe

Maxwell

et al. 2021

J of Medical Radiation Sci

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Introduction Optical three‐dimensional scanning devices can produce geometrically accurate, high‐resolution models of patients suitable for clinical use. This article describes the use of a metrology‐grade structured light scanner for the design and production of radiotherapy medical devices and synthetic water‐equivalent computer tomography images. Methods Following commissioning of the device by scanning objects of known properties, 173 scans were performed on 26 volunteers, with observations of subjects and operators collected. Results The fit of devices produced using these scans was assessed, and a workflow for the design of complex devices using a treatment planning system was identified. Conclusions Recommendations are provided on the use of the device within a radiation oncology department.

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Section: Introductionmentioning

confidence: 99%

Evaluation of optical 3D scanning system for radiotherapy use

Crowe

Luscombe

Maxwell

et al. 2021

J of Medical Radiation Sci

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“…3D printing is available within many clinical departments with the application including bolus for megavoltage treatment and to provide customised shielding in SXRT applications (Crowe et al, 2021). Further, many home users have been able to print small items using available resin.…”

Section: Introductionmentioning

confidence: 99%

Use of a PLA sleeve to remove electron enhancement in superficial X-ray therapy

Barbagallo

2022

Phys Eng Sci Med

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A newly installed super cial x-ray unit was found to produce enhanced electron dose at the skin surface. ACPSEM guidelines suggest using nail varnish within the treatment cones as a method to reduce this dose. In this study, a 3D PLA sleeve was produced and used as an alternative to the nail varnish. Further, plastic wrap was also investigated for its anecdotal recommendations to reduce dose. It was found that a 1 mm printed sleeve, inserted into the treatment cone su ciently reduced the enhanced dose to within approximately 3% of the dose measured with a Farmer-type chamber. The use of plastic wrap also reduced the enhanced dose, but impracticalities in its use make it non-viable for routine clinical use.

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