| dc.creator | VILLANI, D. | |
| dc.creator | RODRIGUES JUNIOR, O. | |
| dc.creator | DANTAS, B.M. | |
| dc.creator | CAMPOS, L.L. | |
| dc.creator | INTERNATIONAL CONFERENCE ON DOSIMETRY AND ITS APPLICATIONS, 3rd | |
| dc.date | 2020-03-31T18:46:47Z | |
| dc.date | 2020-03-31T18:46:47Z | |
| dc.date | May 27-31, 2019 | |
| dc.date.accessioned | 2023-09-28T14:14:50Z | |
| dc.date.available | 2023-09-28T14:14:50Z | |
| dc.identifier | http://repositorio.ipen.br/handle/123456789/31016 | |
| dc.identifier | 0000-0001-7137-0613 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/9001239 | |
| dc.description | Introduction
The use of 3D printing and fi laments commonly found commercially for development of phantoms
has been investigated in recent years due to the cost of materials and improvements in the
quality of printers. The application of this technique for radiation protection and dosimetry
requires a complex study of the quality control and the interaction of printed materials with
different radiation beams. The aim of this paper is to characterize 3D printed phantoms and
printing set-ups for different infi ll percentages for diagnostic energy beams.
Methods
3D printing performance was studied using the RAISE 3D PRO2 printer from IPEN for printing
with PLA (Polylactic Acid) and ABS (Acrylonitrile Butadiene Styrene) fi laments. Printing
characteristics such as repeatability, reproducibility, effective density by displaced water mass
and porosity at 100% infi ll were studied. Plate samples of 8x8x1cm3 were printed and, using
the Pantak Seifert irradiator with different x-ray qualities in the diagnostic energy range, the
attenuation coeffi cients were obtained experimentally for different percentages of plates infi ll.
Results
By printing three identical samples for each print mode, the 3D printing system had a
repeatability better than 1.0% for masses and average of 0.7% for the dimensions of the
printed objects, obtaining the highest variations in small printed parts. Little to no porosity
has been found on the printed pieces with 100% infi ll, giving to the printed objects the same
density of the chosen fi lament. The attenuation coeffi cients were determined for the different
beam qualities and it was verifi ed that the variation in the values decreases as the infi ll quality
increases.
Conclusions
The results show that the printing system have excellent repeatability and print quality. The
different printing modes characterized together with their attenuation coeffi cients for the
x-ray beams will be studied and used in the development of new 3D printed phantoms in our
institute. | |
| dc.publisher | C2TN, Instituto Superior T??cnico, Universidade de Lisboa | |
| dc.rights | openAccess | |
| dc.title | Dosimetric characterization of 3D printed phantoms at different infill percentage for diagnostic x-ray energy range | |
| dc.type | Resumo de eventos cient??ficos | |
| dc.coverage | I | |
| dc.local | Lisboa, Portugal | |
