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Evaluation of administered dose using portal images in craniospinal irradiation of pediatric patients

2017-03Journal article Restricted access
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dc.contributor.authorCoelho, Carina Marques
dc.contributor.authorCalçada, Raquel
dc.contributor.authorRodrigues, Sofia
dc.contributor.authorBarragán, Juan Antonio
dc.contributor.authorSá, Ana Cravo
dc.contributor.authorMacedo, Ana Paula
dc.contributor.authorMonsanto, Fátima
dc.date.accessioned2017-08-17T16:50:38Z
dc.date.available2017-08-17T16:50:38Z
dc.date.issued2017-03
dc.description.abstractThis study aimed to assess the administered dose based on portal imaging in craniospinal pediatric irradiation by evaluating cases in which portal images did or did not account for the total administered dose. We also intended to calculate the mean increase in total administered dose. Data were collected from General University Hospital Gregorio Marañón; we evaluated the total dose administered, total dose planned, number of portal images per treatment and corresponding monitor units of two different groups: one in which the dose from portal images is deducted from the total administered dose (D), and another in which it was not (N). We used descriptive statistics to analyze the collected data, including the mean and respective standard deviation. We used the Shapiro-Wilk and Spearman rank correlation coefficient tests and estimated the linear regression coefficients. Patients in group D received a mean dose of 29.00 ± 10.28 cGy based on the verification portal images, a quantity that was deducted from the planned dose to match the total administered dose. Patients in group N received a mean dose of 41.50 ± 30.53 cGy, which was not deducted from the planned dose, evidencing a mean increase of 41.50 ± 30.55 cGy over the total administered dose. The acquisition of the set-up verification portal images, without their inclusion in the total administered dose, reflects an average increase in total dose for craniospinal irradiation of pediatric patients. Subtraction of the monitor units used to acquire the verification images is recommended.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCoelho CM, Calçada R, Rodrigues S, Barragán JA, Sá AC, Monsanto F, et al. Evaluation of administered dose using portal images in craniospinal irradiation of pediatric patients. Radiol Phys Technol. 2017 Mar 21. [Epub ahead of print]pt_PT
dc.identifier.doi10.1007/s12194-017-0395-4pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.21/7328
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringer Publishing Companypt_PT
dc.relation.publisherversionhttps://link.springer.com/article/10.1007%2Fs12194-017-0395-4pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectRadiotherapypt_PT
dc.subjectCraniospinal irradiationpt_PT
dc.subjectPediatric tumorspt_PT
dc.subjectPortal imagespt_PT
dc.subjectRadiation exposurept_PT
dc.titleEvaluation of administered dose using portal images in craniospinal irradiation of pediatric patientspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleRadiological Physics and Technologypt_PT
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT

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