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Forward-projected Model-based Iterative Reconstruction SoluTion in Temporal Bone Computed Tomography: A Comparison Study of All Reconstruction Modes.

颞骨计算机断层扫描中基于前向投影模型的迭代重建解: 所有重建模式的比较研究。

  • 影响因子:1.48
  • DOI:10.1097/RCT.0000000000001119
  • 作者列表:"Kurokawa R","Hagiwara A","Nakaya M","Maeda E","Yamaguchi H","Gonoi W","Sato J","Nakata K","Ino K","Ota Y","Kurokawa M","Baba A","Nyunoya K","Usui Y","Tanishima T","Tsushima S","Torigoe R","Suyama TQ","Abe O
  • 发表时间:2021-03-01
Abstract

OBJECTIVE:Identify appropriate reconstruction modes of Forward-projected model-based Iterative Reconstruction SoluTion (FIRST) in temporal bone computed tomography (CT) and investigate the contribution of spatial resolution and noise to the visual assessment. METHODS:Sixteen temporal bone CT images were reconstructed. Two blinded radiologists assessed 8 anatomical structures and classified the visual assessment. These visual scores were compared across reconstruction modes among each anatomical structure. Visual scores and contrast-to-noise ratio, noise power spectrum (NPS) at low (NPSLow) and high (NPSHigh) spatial frequencies, and 50% modulation transfer function relationships were evaluated. RESULTS:Visual scores differed significantly for the stapedius muscle and osseous spiral lamina, with CARDIAC SHARP, BONE, and LUNG modes for the osseous spiral lamina scoring highest. Visual scores significantly positively correlated with NPSLow, NPSHigh, and 50% modulation transfer function but negatively with contrast-to-noise ratio. CONCLUSIONS:Modes providing higher spatial resolution and lower noise reduction showed an improved visual assessment of CT images reconstructed with FIRST.

摘要

目的: 确定颞骨计算机断层扫描 (CT) 中基于前向投影模型的迭代重建解决方案 (FIRST) 的合适重建模式,并研究空间分辨率和噪声对视觉评估的贡献。 方法: 对16例颞骨CT图像进行重建。两名设盲的放射科医师评估了8个解剖结构,并对视觉评估进行了分类。在每个解剖结构之间的重建模式中比较这些视觉评分。评估了视觉评分和对比度噪声比、低 (NPSLow) 和高 (NPSHigh) 空间频率下的噪声功率谱 (NPS) 以及50% 调制传递函数关系。 结果: 镫骨肌和骨螺旋椎板的视觉评分显著不同,骨螺旋椎板的心脏尖锐、骨和肺模式评分最高。视觉评分与NPSLow、nphigh和50% 调制传递函数显著正相关,但与对比度噪声比呈负相关。 结论: 提供较高空间分辨率和较低噪声降低的模式显示了用FIRST重建的CT图像的改进的视觉评估。

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影响因子:2.68
发表时间:2021-02-01
DOI:10.1080/14656566.2020.1814255
作者列表:["Sawada H","Oeda T","Kohsaka M","Tomita S","Umemura A","Park K","Yamamoto K","Kiyohara K"]

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发表时间:2021-03-24
DOI:10.1007/s11033-021-06299-9
作者列表:["Louvrier A","Terranova L","Meyer C","Meyer F","Euvrard E","Kroemer M","Rolin G"]

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