The effect of iterative reconstruction on quantitative computed tomography assessment of coronary plaque composition
作者： Richard A. P. Takx , Martin J. Willemink , Hendrik M. Nathoe , Arnold M. R. Schilham , Ricardo P. J. Budde
DOI: 10.1007/S10554-013-0293-8
关键词: Iterative reconstruction 、 Radiology 、 Quantitative computed tomography 、 Aorta 、 Image quality 、 Image noise 、 Coronary artery disease 、 Cardiac imaging 、 Coronary arteries 、 Medicine 、 Radiology Nuclear Medicine and imaging 、 Cardiology and Cardiovascular Medicine
摘要: To compare coronary plaque size and composition as well degree of artery stenosis on Computed Tomography angiography (CCTA) using three levels iterative reconstruction (IR) with standard filtered back projection (FBP). In 63 consecutive patients a clinical indication for CCTA 55 plaques were analysed. Raw data reconstructed FBP 2, 4 6 commercially available IR algorithm (iDose4). CT attenuation noise measured in the aorta two arteries. Both signal-to-noise-ratio (SNR) contrast-to-noise ratio (CNR) calculated. The amount lipid, fibrous calcified components mean cross-sectional luminal area analysed dedicated software. Image was reduced by 41.6 % (p < 0.0001) SNR CNR improved 73.4 72.9 at level 6, respectively. objective image quality measures more than Furthermore, had no significant effect measurements volume area. application significantly improves quality, does not alter quantitative analysis volume,
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