The need for technological updating in radiology: a case study in CT

Afonso, J.; Borlinhas, Filipa; Venâncio, José

Publication

The need for technological updating in radiology: a case study in CT

2017-09Conference object

dc.contributor.author	Afonso, J.
dc.contributor.author	Borlinhas, Filipa
dc.contributor.author	Venâncio, José
dc.date.accessioned	2017-12-23T22:37:25Z
dc.date.available	2017-12-23T22:37:25Z
dc.date.issued	2017-09
dc.description.abstract	Introduction - The exposure of the population to ionizing radiation following radiologic exams has become a topic of special concern due to its growing importance. Computed Tomography (CT) technology is well-known to be the main accountable for the significant increase verified. In this context and derived from the concerns of health personnel, as well as media highlight on this topic, manufacturers have been developing solutions that improve their scanners performance on radiation dose, being, therefore, a strong sales argument. Methods - Radiation dose measurements were obtained in similar technical conditions of real CT exams at the Radiology Department of IPOLFG, EPE, with a 32 cm circular Polymethylmethacrylate phantom, simulating an adult’s chest, abdomen, and pelvis. Comparisons were made between the performance of a CT scanner, developed and manufactured in 2002, equipped with the best technology available at the time, and similar measurements, gathered in the same circumstances were obtained with another CT scanner of the same manufacturer but developed and manufactured in 2014. Both devices have16 rows of detectors, but differ in hardware and software, as well as other characteristics related to their construction. The data collected using a Unfords dosimeter, model Xi with processing according to international guidelines, allows the dose comparison between these two devices that can be due, for example, to the dose optimization technology inherent to each equipment. Results - The dose/dose indicators comparison in devices supplied with the best available at the moment of their manufacture in 2002 and 2014 highlights the importance of the progress achieved in 12 years of technical evolution. Conclusions - Dosage control in radiation received by the population as a result of CT exams, whose growth has been verified in the last few years, results not only from the increasing number of requests for exams due to trivialization and reduced cost of these devices but also the celerity and commodity in performing them. An increase in awareness of the negative impact of this matter, not only individually but also publicly, has been countered by the manufacturers with a strong investment in technological development to keep their devices at the same level has the competition’s, which results in a shorter lifespan for the CT devices. Nowadays, a top-level device gets exceeded and obsolete in a decade. Therefore, has to be proven by this study, a frequent evaluation and analysis of the technology available, in addition to its impact in control and decrease of the dosage to which the patients are submitted during exams, is crucial.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.citation	Afonso J, Borlinhas F, Venâncio J. The need for technological updating in radiology: a case study in CT. In: PRS 2017 – Conference "Proteção Radiológica na Saúde 2017", Instituto Superior Técnico (Lisboa), 27-29 de setembro de 2017.	pt_PT
dc.identifier.uri	http://hdl.handle.net/10400.21/7787
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.relation.publisherversion	http://www.ctn.tecnico.ulisboa.pt/prs2017/BookAbstracts-PRS2017-v2.pdf	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/	pt_PT
dc.subject	Radiology	pt_PT
dc.subject	Ionizing radiation	pt_PT
dc.subject	Radiation exposure	pt_PT
dc.subject	Computed tomography	pt_PT
dc.title	The need for technological updating in radiology: a case study in CT	pt_PT
dc.type	conference object
dspace.entity.type	Publication
oaire.citation.conferencePlace	Lisboa	pt_PT
rcaap.rights	openAccess	pt_PT
rcaap.type	conferenceObject	pt_PT