Gemstone spectral imaging reduced artefacts from metal coils or clips after treatment of cerebral aneurysms: a retrospective study of 35 patients

The British Journal of Radiology
Yulin JiaXigang Xiao

Abstract

This study aimed to evaluate the effect of gemstone spectral imaging (GSI) for metal artefact reduction in cerebral artery CT angiography (CTA) after metal coils or clips treatment. 35 patients with cerebral aneurysms were treated with metal coils or clips and underwent CTA using gemstone spectral CT between February and December 2013. The data were reconstructed into three image groups including Group A (quality check images with 140 kVp), Group B (monochromatic image sets in the range of 40-140 keV) and Group C [monochromatic image sets with metal artefacts reduction software (MARS GE Medical Systems, Waukesha, WI)]. CT attenuation value of cerebral artery, contrast-to-noise ratio (CNR), signal-to-noise ratio (SNR) and the subjective score of all images were measured and compared statistically. CT attenuation value of cerebral artery decreased in Groups B and C as the photon energy increased. The average energy levels of 60.05 ± 5.37 and 59.93 ± 5.57 keV presented the best CNR in Groups B and C, respectively. CNR values, SNR values and the subjective scores of the image quality of the two sets were higher than those of Group A. GSI reduced metal artefact and improved the image quality of CTA after metal coils or clips treatme...Continue Reading

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Citations

Nov 11, 2016·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Christopher A Potter, Aaron D Sodickson
Jul 20, 2018·Medicine·Yulin JiaHuijie Jiang
Sep 17, 2018·Neuroradiology·Iulia MocanuNiloufar Sadeghi
Jun 21, 2018·Clinical Neuroradiology·Aikaterini FitsioriMaria Isabel Vargas

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