External Beam Radiation Therapy (EBRT) treatments require efficient immobilization systems, which aims the minimization of intra and inter-fraction movements and the “set-up” deviations [1], as well as daily reproducibility of positioning, in order to achieve planned dose prescription. In this context, prototyping can be a very interesting tool for the production of objects, both for the mobilization of patients and for other purposes, which, in the scope of the radiotherapy treatments can be developed according to the needs of the patient. Rapid Prototyping (RP) [2]...

The work was carried out in five phases: Phase 1: Head CT data acquisition. The studies were performed on a General Electric ® LightSpeed™ VCT 16 scan. An anthropomorphic phantom head computed Tomography (CT) was performed. The protocol used is presented in Table 1. After the images acquisition in the DICOM format, quality improvement was performed in two post-processing software: 3D Slicer® and Meshmixer®. Phase 2: Head CT data post-processing. Use of 3D Slicer® software viewing with the aid of the Projection Volume Rendering Technique...

Results can be considered in following steps: Head CT data acquisition Normal 0 false false false EN-GB X-NONE X-NONE Regarding the phantom head positioning, it should be noted that it is extremely important a good alignment and immobilization of phantom (figure 2). A correct positioning leads to a CT image acquisition, where a contour of anatomical structures, providing a correct delineation of clinical volumes and organs of risk is easier for its delineation (Figure 2). Head CT data post-processing Using the head CT data, and...

The methodology used was suitable for the printing of objects according to the patient's anatomy. However, they are perceptible zones of less contact with the phantom surface. In future studies, the development of immobilization objects more adapted to the patient's anatomy and with a bolus function, which can be used in external radiotherapy treatments, should be evaluated, and the behaviour of the materials used when exposed to ionizing radiation should be analysed.

Sara Marques ([email protected]), Ana Sapalo ([email protected]), Daniela Vilar ([email protected]) Sara Marques, Ana Sapalo and Daniela Vilar completed their graduation in Medical Imaging and Radiotherapy at the School of Health Sciences, University of Aveiro, in the academic year 2016/2017. SerafimPinto ([email protected]) Serafim Filipe Cunha Pinto is Adjunct Professor at the School of Health Sciences, University of Aveiro. He received his Radiotherapy BSc degree in 2001. In 2013 he received the Radiation Therapy Specialist title. He worked as Radiation Therapist in Porto Oncology Institute from 2001 to...

[1] C. G. Lin, S. K. Xu, W. Y. Yao, Y. Q. Wu, J. L. Fang, and V. W. C. Wu, “Comparison of set up accuracy among three common immobilisation systems for intensity modulated radiotherapy of nasopharyngeal carcinoma patients,” J. Med. Radiat. Sci., 2017. [2] E. Moeskopf and F. Feenstra, “Introduction to Rapid Prototyping,” in Reverse Engineering, London: Springer London, 2008, pp. 99–117. [3] B. Berman and F. G. Zarb, “3-D printing: The new industrial revolution 1. A multi-faceted technology: 3-D printing,” Bus. Horiz., vol....