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dc.contributor.authorGislason-Lee, Amber J.*
dc.contributor.authorKeeble, C.*
dc.contributor.authorMalkin, C.J.*
dc.contributor.authorEgleston, D.*
dc.contributor.authorBexon, J.*
dc.contributor.authorKengyelics, S.M.*
dc.contributor.authorBlackman, D.*
dc.contributor.authorDavies, A.G.*
dc.date.accessioned2019-04-04T14:38:57Z
dc.date.available2019-04-04T14:38:57Z
dc.date.issued2016
dc.identifier.citationGislason-Lee AJ, Keeble C, Malkin CJ et al (2016) Impact of latest generation cardiac interventional X-ray equipment on patient image quality and radiation dose for trans-catheter aortic valve implantations. The British Journal of Radiology. 89(1067): 20160269.en_US
dc.identifier.urihttp://hdl.handle.net/10454/16948
dc.descriptionYesen_US
dc.description.abstractObjectives: This study aimed to determine the impact on radiation dose and image quality of a new cardiac interventional X-ray system for trans-catheter aortic valve implantation (TAVI) patients compared to the previously-used cardiac X-ray system. Methods: Patient dose and image data were retrospectively collected from a Philips AlluraClarity (new) and Siemens Axion Artis (reference) X-ray system. Patient dose area product (DAP) and fluoroscopy duration of 41 patient cases from each X-ray system were compared using a Wilcoxon test. Ten patient aortograms from each X-ray system were scored by 32 observers on a continuous scale to assess the clinical image quality at the given phase of the TAVI procedure. Scores were dichotomised by acceptability and analysed using a Chi-squared test. Results: Significant reductions in patient dose (p<<0.001) were found for the new system with no significant change in fluoroscopy duration (p=0.052); procedure DAP reduced by 55%, fluoroscopy DAP by 48% and “cine” acquisition DAP by 61%. There was no significant difference between image quality scores of the two X-ray systems (p=0.06). Conclusions: The new cardiac X-ray system demonstrated a very significant reduction in patient dose with no loss of clinical image quality. Advances in Knowledge: The huge growth of TAVI may impact on the radiation exposure of cardiac patients and particularly on operators including anaesthetists; cumulative exposure of interventional cardiologists performing high volume TAVI over 30-40 years may be harmful. The Phillips Clarity upgrade including improved image enhancement and optimised X-ray settings significantly reduced radiation without reducing clinically acceptable image quality.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttps://doi.org/10.1259/bjr.20160269en_US
dc.rights© 2016 The authors. Published by the British Institute of Radiology. Reproduced in accordance with the publisher's self-archiving policy.en_US
dc.subjectTrans-catheter aortic valve implantationen_US
dc.subjectTAVIen_US
dc.subjectCardiac interventional X-rayen_US
dc.subjectRadiation doseen_US
dc.subjectImage qualityen_US
dc.subjectRadiologyen_US
dc.titleImpact of latest generation cardiac interventional X-ray equipment on patient image quality and radiation dose for trans-catheter aortic valve implantationsen_US
dc.status.refereedYesen_US
dc.date.Accepted2016-09-08
dc.date.application2016-09-29
dc.typeArticleen_US
dc.type.versionPublished versionen_US
refterms.dateFOA2019-04-04T14:38:57Z


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