A Third-Generation Adaptive Statistical Iterative Reconstruction for Contrast-Enhanced 4-Dimensional Dual-Energy Computed Tomography for Pancreatic Cancer
A Third-Generation Adaptive Statistical Iterative Reconstruction for Contrast-Enhanced 4-Dimensional Dual-Energy Computed Tomography for Pancreatic Cancer
复制标题
用于胰腺癌增强 4 维双能计算机断层扫描的第三代自适应统计迭代重建
DOI：
10.1097/rct.0000000000000942
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发表时间：
2021
影响因子：
1.3
通讯作者：
Teshima Teruki
中科院分区：
文献类型：
--
作者：
Ohira Shingo;Kanayama Naoyuki;Wada Kentaro;Washio Hayate;Karino Tsukasa;Ueda Yoshihiro;Inui Shoki;Miyazaki Masayoshi;Koizumi Masahiko;Teshima Teruki
ObjectivesThe的目的，这项研究的目的是评估的客观和主观质量的对比增强4维双能量计算机断层扫描使用自适应统计迭代重建（ASIR）和ASIR-V。方法在60 keV的虚拟单色图像重建使用滤波反投影，ASIR，ASIR-V（10%-100%）为14例胰腺癌患者。计算对比噪声比（CNR），并比较主观测量的基础上，一个5-pointscore scale. ResultsASiR-V产生的CNR明显高于ASiR（P< 0.05）。主观图像质量（峰值）明显改善（P< 0.01）与ASiR（50%）（3.8、3.5和4.0;总体图像质量、肿瘤描绘和噪声）和ASiR-V（50%）（分别为3.9、3.5和4.2）与滤波反投影相比结论ASiR-V比ASiR产生更高的CNR，并提供了关于整体图像质量的最高主观评分。
ObjectivesThe objective of this study was to assess the objective and subjective qualities of the contrast-enhanced 4-dimensional dual-energy computed tomography using adaptive statistical iterative reconstruction (ASiR) and ASiR-V.MethodsThe virtual monochromatic images at 60 keV were reconstructed using filtered back projection, ASiR, and ASiR-V (10%–100%) for 14 patients with pancreatic cancer. The contrast-to-noise ratio (CNR) was calculated, and the subjective measurements were compared based on a 5-point score scale.ResultsThe ASiR-V yielded a significantly higher CNR than ASiR (P< 0.05). The subjective image quality (peak) was significantly improved (P< 0.01) with ASiR (50%)(3.8, 3.5, and 4.0; overall image quality, tumor delineation, and noise, respectively) and with ASiR-V (50%)(3.9, 3.5, and 4.2, respectively) compared with the filtered back projection (3.2, 3.2, and 3.0, respectively).ConclusionsThe ASiR-V yielded higher CNR than ASiR and provided the highest subjective scores regarding the overall image quality.