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Journal of Medical Imaging

Comprehensive assessment of patient image quality and radiation dose in latest generation cardiac x-ray equipment for percutaneous coronary interventions
Author(s): Amber J. Gislason-Lee; Claire Keeble; Daniel Egleston; Josephine Bexon; Stephen M. Kengyelics; Andrew G. Davies
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Paper Abstract

This study aimed to determine whether a reduction in radiation dose was found for percutaneous coronary interventional (PCI) patients using a cardiac interventional x-ray system with state-of-the-art image enhancement and x-ray optimization, compared to the current generation x-ray system, and to determine the corresponding impact on clinical image quality. Patient procedure dose area product (DAP) and fluoroscopy duration of 131 PCI patient cases from each x-ray system were compared using a Wilcoxon test on median values. Significant reductions in patient dose ( p 0.001 ) were found for the new system with no significant change in fluoroscopy duration ( p = 0.2 ); procedure DAP reduced by 64%, fluoroscopy DAP by 51%, and “cine” acquisition DAP by 76%. The image quality of 15 patient angiograms from each x-ray system (30 total) was scored by 75 clinical professionals on a continuous scale for the ability to determine the presence and severity of stenotic lesions; image quality scores were analyzed using a two-sample t -test. Image quality was reduced by 9% ( p 0.01 ) for the new x-ray system. This demonstrates a substantial reduction in patient dose, from acquisition more than fluoroscopy imaging, with slightly reduced image quality, for the new x-ray system compared to the current generation system.

Paper Details

Date Published: 2 May 2017
PDF: 7 pages
J. Med. Imag. 4(2) 025501 doi: 10.1117/1.JMI.4.2.025501
Published in: Journal of Medical Imaging Volume 4, Issue 2
Show Author Affiliations
Amber J. Gislason-Lee, Univ. of Leeds (United Kingdom)
Claire Keeble, Univ. of Leeds (United Kingdom)
Daniel Egleston, Univ. of Leeds (United Kingdom)
Josephine Bexon, Univ. of Leeds (United Kingdom)
Stephen M. Kengyelics, Univ. of Leeds (United Kingdom)
Andrew G. Davies, Univ. of Leeds (United Kingdom)

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