Effect of a Novel Intracycle Motion Correction Algorithm on Dual-Energy Spectral Coronary CT Angiography: A Study with Pulsating Coronary Artery Phantom at High Heart Rates

Korean Journal of Radiology : Official Journal of the Korean Radiological Society
Yan XingWen-Ya Liu

Abstract

Using a pulsating coronary artery phantom at high heart rate settings, we investigated the efficacy of a motion correction algorithm (MCA) to improve the image quality in dual-energy spectral coronary CT angiography (CCTA). Coronary flow phantoms were scanned at heart rates of 60-100 beats/min at 10-beats/min increments, using dual-energy spectral CT mode. Virtual monochromatic images were reconstructed from 50 to 90 keV at 10-keV increments. Two blinded observers assessed image quality using a 4-point Likert Scale (1 = non-diagnostic, 4 = excellent) and the fraction of interpretable segments using MCA versus conventional algorithm (CA). Comparison of variables was performed with the Wilcoxon rank sum test and McNemar test. At heart rates of 70, 80, 90, and 100 beats/min, images with MCA were rated as higher image scores compared to those with CA on monochromatic levels of 50, 60, and 70 keV (each p < 0.05). Meanwhile, at a heart rate of 90 beats/min, image interpretability was improved by MCA at a monochromatic level of 60 keV (p < 0.05) and 70 keV (p < 0.05). At a heart rate of 100 beats/min, image interpretability was improved by MCA at monochromatic levels of 50 keV (from 69.4% to 86.1%, p < 0.05), 60 keV (from 55.6% to 83....Continue Reading

References

Aug 14, 2010·Radiologic Clinics of North America·Carolyn M TaylorSuhny Abbara
Jul 12, 2011·Current Opinion in Cardiology·Su M ChangFaisal Nabi
Apr 13, 2013·Radiology·Jonathan A ScheskeJonathon A Leipsic
Jul 16, 2013·Journal of Cardiovascular Computed Tomography·James K MinJonathon Leipsic
Jan 7, 2014·World Journal of Cardiology·Akmal Sabarudin, Zhonghua Sun

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Citations

Jul 3, 2018·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·Xiao-Ping YinYong-Xia Zhao
Dec 20, 2019·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·Yeon Hyeon Choe

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