Tradeoff between noise reduction and inartificial visualization in a model-based iterative reconstruction algorithm on coronary computed tomography angiography.
Tradeoff between noise reduction and inartificial visualization in a model-based iterative reconstruction algorithm on coronary computed tomography angiography.
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DOI：
10.1097/md.0000000000010810
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发表时间：
2018-05
期刊：
影响因子：
1.6
通讯作者：
Yamashita Y
中科院分区：
文献类型：
--
作者：
Hirata K;Utsunomiya D;Kidoh M;Funama Y;Oda S;Yuki H;Nagayama Y;Iyama Y;Nakaura T;Sakabe D;Tsujita K;Yamashita Y
我们的目的是评估不同设置下的冠状动脉CT血管成像(CTA)的图像质量的不同设置下基于前向投影模型的迭代重建解决方案(第一)。共纳入30例接受冠状动脉CTA的患者。每个图像采用滤波反投影(FBP)、自适应迭代剂量减少3D(AIDR-3D)和2个基于模型的迭代重建，包括第一身体和第一心脏夏普(CS)。测量冠状动脉和斑块的CT数和噪声。在噪声和结构可见性方面获得主观图像质量评分。在客观图像分析中，第一车身产生的对比度噪声比显著最高。在主观图像质量方面，First-CS的结构可见性得分最高，但图像噪声得分低于第一身体。总之，与FBP和AIDR-3D相比，First在客观和主观图像质量方面都有显著改进。First-Body有效地降低了图像噪声，但First-CS的结构可见性优于First-Body。
We aimed to evaluate the image quality performance of coronary CT angiography (CTA) under the different settings of forward-projected model-based iterative reconstruction solutions (FIRST). Thirty patients undergoing coronary CTA were included. Each image was reconstructed using filtered back projection (FBP), adaptive iterative dose reduction 3D (AIDR-3D), and 2 model-based iterative reconstructions including FIRST-body and FIRST-cardiac sharp (CS). CT number and noise were measured in the coronary vessels and plaque. Subjective image-quality scores were obtained for noise and structure visibility. In the objective image analysis, FIRST-body produced the significantly highest contrast-to-noise ratio. Regarding subjective image quality, FIRST-CS had the highest score for structure visibility, although the image noise score was inferior to that of FIRST-body. In conclusion, FIRST provides significant improvements in objective and subjective image quality compared with FBP and AIDR-3D. FIRST-body effectively reduces image noise, but the structure visibility with FIRST-CS was superior to FIRST-body.